Bipolar1Blog

IBM’s AI can predict schizophrenia by looking at the brain’s blood flow

With 74% accuracy!

https://www.engadget.com/2017/07/20/ibms-ai-can-predict-schizophrenia-by-looking-at-the-brains-blo/?sr_source=Twitter

IBM’s AI can predict schizophrenia by looking at the brain’s blood flow

And it does so with 74 percent accuracy

Schizophrenia is not a particularly common mental health disorder in America, affecting just 1.2 percent of the population (around 3.2 million people), but its effects can be debilitating. However, pioneering research conducted by IBM and the University of Alberta could soon help doctors diagnose the onset of the disease and the severity of its symptoms using a simple MRI scan and a neural network built to look at blood flow within the brain.

“This unique, innovative multidisciplinary approach opens new insights and advances our understanding of the neurobiology of schizophrenia, which may help to improve the treatment and management of the disease,” Dr. Serdar Dursun, a Professor of Psychiatry & Neuroscience with the University of Alberta, said in a statement.

MRI scans showing statistically significant differing blood flows within the brain – Image: IBM

The research team first trained its neural network on a 95-member dataset of anonymized fMRI images from the Function Biomedical Informatics Research Network which included scans of both patients with schizophrenia and a healthy control group. These images illustrated the flow of blood through various parts of the brain as the patients completed a simple audio-based exercise. From this data, the neural network cobbled together a predictive model of the likelihood that a patient suffered from schizophrenia based on the blood flow. It was able to accurately discern between the control group and those with schizophrenia 74 percent of the time.

“We’ve discovered a number of significant abnormal connections in the brain that can be explored in future studies,” Dursun continued, “and AI-created models bring us one step closer to finding objective neuroimaging-based patterns that are diagnostic and prognostic markers of schizophrenia.”

What’s more, the model managed to also predict the severity of symptoms once they set in. These insights could lead researchers to more effective diagnostic tools and treatment options. And why wouldn’t they? IBM’s most famous AI, Watson, has already shown that neural networks are surprisingly adept at coming up with effective cancer treatment regimens.

 

Scientists Discover that the Immune System Controls Social Interaction

More amazing news, the immune system actually controls social behavior. It used to be thought that the immune system and the brain functioned independently of each other. However, that has been shown to be untrue. It has been shown that the immune system and the brain interact closely with each other and some of our behavior traits might have evolved because of our immune response to pathogens. “The relationship between people and pathogens, the researchers suggest, could have directly affected the development of our social behavior, allowing us to engage in the social interactions necessary for the survival of the species while developing ways for our immune systems to protect us from the diseases that accompany those interactions.”

Interferon γ, an immune molecule,  seems to be the molecule that is involved in both immune activity and how social organisms are! If interferon γ is knocked out in mice, they become much less social, and if it is restored, their social life gets better as well!

The theory is that even though we need to be social for survival, procreating, etc. being social increases our chances to get diseases. So interferon γ not only makes us more social but also protects us from getting sick.

And here are the amazing implications: “The researchers note that a malfunctioning immune system may be responsible for “social deficits in numerous neurological and psychiatric disorders.””

And: Litvak said. “Our findings contribute to a deeper understanding of social dysfunction in neurological disorders, such as autism and schizophrenia, and may open new avenues for therapeutic approaches.”

Incredibly amazing!

 

https://explorist.futurism.com/scientists-discover-immune-system-controls-social-interaction/
Health
Scientists Discover that the Immune System Controls Social Interaction
by explorist on July 19, 2017
Scientists Discover that the Immune System Controls Social Interaction
A Startling Discovery
In a startling discovery that raises fundamental questions about human behavior, researchers at the University of Virginia School of Medicine have determined that the immune system directly affects — and even controls — creatures’ social behavior, such as their desire to interact with others. So could immune system problems contribute to an inability to have normal social interactions? The answer appears to be yes, and that finding could have great implications for neurological conditions such as autism-spectrum disorders and schizophrenia.
“The brain and the adaptive immune system were thought to be isolated from each other, and any immune activity in the brain was perceived as sign of a pathology. And now, not only are we showing that they are closely interacting, but some of our behavior traits might have evolved because of our immune response to pathogens,” explained Jonathan Kipnis, PhD, chairman of UVA’s Department of Neuroscience. “It’s crazy, but maybe we are just multicellular battlefields for two ancient forces: pathogens and the immune system. Part of our personality may actually be dictated by the immune system.”
Evolutionary Forces at Work
It was only last year that Kipnis, the director of UVA’s Center for Brain Immunology and Glia, and his team discovered that meningeal vessels directly link the brain with the lymphatic system. That overturned decades of textbook teaching that the brain was “immune privileged,” lacking a direct connection to the immune system. The discovery opened the door for entirely new ways of thinking about how the brain and the immune system interact.
The follow-up finding is equally illuminating, shedding light on both the workings of the brain and on evolution itself. The relationship between people and pathogens, the researchers suggest, could have directly affected the development of our social behavior, allowing us to engage in the social interactions necessary for the survival of the species while developing ways for our immune systems to protect us from the diseases that accompany those interactions. Social behavior is, of course, in the interest of pathogens, as it allows them to spread.
The UVA researchers have shown that a specific immune molecule, interferon gamma, seems to be critical for social behavior and that a variety of creatures, such as flies, zebrafish, mice and rats, activate interferon gamma responses when they are social. Normally, this molecule is produced by the immune system in response to bacteria, viruses or parasites. Blocking the molecule in mice using genetic modification made regions of the brain hyperactive, causing the mice to become less social. Restoring the molecule restored the brain connectivity and behavior to normal. In a paper outlining their findings, the researchers note the immune molecule plays a “profound role in maintaining proper social function.”

Mikael Häggström/Wikimedia Commons
“It’s extremely critical for an organism to be social for the survival of the species. It’s important for foraging, sexual reproduction, gathering, hunting,” said Anthony J. Filiano, PhD, Hartwell postdoctoral fellow in the Kipnis lab and lead author of the study. “So the hypothesis is that when organisms come together, you have a higher propensity to spread infection. So you need to be social, but [in doing so] you have a higher chance of spreading pathogens. The idea is that interferon gamma, in evolution, has been used as a more efficient way to both boost social behavior while boosting an anti-pathogen response.”
Understanding the Implications
The researchers note that a malfunctioning immune system may be responsible for “social deficits in numerous neurological and psychiatric disorders.” But exactly what this might mean for autism and other specific conditions requires further investigation. It is unlikely that any one molecule will be responsible for disease or the key to a cure, the researchers believe; instead, the causes are likely to be much more complex. But the discovery that the immune system — and possibly germs, by extension — can control our interactions raises many exciting avenues for scientists to explore, both in terms of battling neurological disorders and understanding human behavior.
“Immune molecules are actually defining how the brain is functioning. So, what is the overall impact of the immune system on our brain development and function?” Kipnis said. “I think the philosophical aspects of this work are very interesting, but it also has potentially very important clinical implications.”
Findings Published
Kipnis and his team worked closely with UVA’s Department of Pharmacology and the group of Vladimir Litvak, PhD, at the University of Massachusetts Medical School. Litvak’s team developed a computational approach to investigate the complex dialogue between immune signaling and brain function in health and disease. “Using this approach we predicted a role for interferon gamma, an important cytokine secreted by T lymphocytes, in promoting social brain functions,” Litvak said. “Our findings contribute to a deeper understanding of social dysfunction in neurological disorders, such as autism and schizophrenia, and may open new avenues for therapeutic approaches.”
The findings have been published online in the journal Nature. The article was written by Filiano, Yang Xu, Nicholas J. Tustison, Rachel L. Marsh, Wendy Baker, Igor Smirnov, Christopher C. Overall, Sachin P. Gadani, Stephen D. Turner, Zhiping Weng, Sayeda Najamussahar Peerzade, Hao Chen, Kevin S. Lee, Michael M. Scott, Mark P. Beenhakker, Litvak and Kipnis.
This work was supported by the National Institutes of Health (grants No. AG034113, NS081026 and T32-AI007496) and the Hartwell Foundation.
This article was provided by  University of Virginia Health System. Materials may have been edited for clarity and brevity.

New Research Discovers That Depression Is An Allergic Reaction To Inflammation

The immune system!!! My pet theory of what causes mental illness!
Well actually allergic reactions are inflammation. And cytokines are produced in inflammation during allergic reactions. Well cytokines are also present in high levels in people suffering from depression. And " adding anti-inflammatory medicines to antidepressants not only improves symptoms, it also increases the proportion of people who respond to treatment,"
“Cytokines skyrocket during depressive episodes and, in those with bipolar disorder, halt in remission. The fact that ‘normal,’ healthy people can become temporarily anxious or depressed after receiving an inflammatory vaccine — like typhoid — lends further credence to the theory. There are even those who think we should re-brand depression altogether as an infectious disease … Carmine Pariante, a Kings College psychiatrist who is quoted in The Guardian report, says that we’re between five and ten years away from a blood test that can measure levels of inflammation in depressed people.  If both Pariante’s estimate and the inflammation-depression theory are correct, we could potentially be just five years from an adequate ‘cure’ for depression.”

Yes, another piece of the puzzle pointing towards the immune system being the culprit in mental illnesses!!!

https://www.feelguide.com/2015/01/06/new-research-discovers-tha-depression-is-an-allergic-reaction-to-inflammation/

New Research Discovers That Depression Is An Allergic Reaction To Inflammation
BY BRENT LAMBERT • JANUARY 6, 2015 • HEALTH, NEUROSCIENCE, SCIENCECOMMENTS (0) • 3000844

New research is revealing that many cases of depression are caused by an allergic reaction to inflammation.  Tim de Chant of NOVA writes: “Inflammation is our immune system’s natural response to injuries, infections, or foreign compounds. When triggered, the body pumps various cells and proteins to the site through the blood stream, including cytokines, a class of proteins that facilitate intercellular communication.  It also happens that people suffering from depression are loaded with cytokines.”  Inflammation is caused by obesity, high sugar diets, high quantities of trans fats, unhealthy diets in general, and other causes.
By treating the inflammatory symptoms of depression — rather than the neurological ones — researchers and doctors are opening up an exciting new dimension in the fight against what has become a global epidemic.  Caroline Williams of The Guardian writes: “The good news is that the few clinical trials done so far have found that adding anti-inflammatory medicines to antidepressants not only improves symptoms, it also increases the proportion of people who respond to treatment, although more trials will be needed to confirm this. There is also some evidence that omega 3 and curcumin, an extract of the spice turmeric, might have similar effects. Both are available over the counter and might be worth a try, although as an add-on to any prescribed treatment – there’s definitely not enough evidence to use them as a replacement.”
Eleanor Morgan of VICE adds: “Cytokines skyrocket during depressive episodes and, in those with bipolar disorder, halt in remission. The fact that ‘normal,’ healthy people can become temporarily anxious or depressed after receiving an inflammatory vaccine — like typhoid — lends further credence to the theory. There are even those who think we should re-brand depression altogether as an infectious disease … Carmine Pariante, a Kings College psychiatrist who is quoted in The Guardian report, says that we’re between five and ten years away from a blood test that can measure levels of inflammation in depressed people.  If both Pariante’s estimate and the inflammation-depression theory are correct, we could potentially be just five years from an adequate ‘cure’ for depression.”
You can read much more by visiting The GuardianVICE, and NOVA.  And to learn much more about how food and mood are powerfully connected, be sure to read this fascinating article on Kripalu.org. (Image courtesy of the American Heart Association).

So far… :-(

2017

Something’s wrong. Since March of 2017. That was when my son got attacked by gang members in a convenient store parking lot and had to literally fight them off with his bare hands for his life. Then his car window got smashed by, presumably, some kids. A few nights ago, he was approached by some menacing people again, bringing his PTSD from the March attack to the fore, again. In the mean time I have whacked my head against a cast iron pipe so hard that I have a concussion. Also broke my little toe. Also accidentally got sliced on my arm by a very sharp knife. And yesterday was the kicker! My son’s apartment building’s roof got struck by lightening, a fire broke out in the attic. He was asleep. He smelled the smoke, NONE of the fire alarms worked! He awoke because his nose is so sensitive. It was late morning. Being on the top floor, his apartment was filling up with smoke. He searched for his cat, so very fortunately found him, threw him in his carrier and legged it out of there. His carbon monoxide level was 4 parts per million. With thoughts of his own mortality, and again, extreme danger, on his mind. But everyone made it safe it and sound. The firefighters put out the fire. The Red Cross was there, ambulances, fire trucks.

What? What is going on? This many disasters in one family? How do you tolerate the stress of one after another, yet another, yet another disaster? The what if’s are always what kill me. I know there is no such thing as what if this had happened, because very simply, it DIDN’T happen. Of course when you survive disasters, you feel fortunate and grateful. But what if he hadn’t found his cat, what if he hadn’t woken up, what if a million times over! And not just what if, but also Now What? What’s going to happen a second from now, an hour from now, a day from now? I don’t want to, but I am living in fear and anxiety and so is my son. He doesn’t sleep at night and yesterday he was saying he wishes this spate of bad luck would end. He was seeing a therapist after the March attack but stopped and doesn’t want to see her anymore. I know she was helping him, so I don’t understand why he won’t talk to her. PTSD is a bitch, she attacks you when you least expect it, anxiety levels soar, fear punches you in your solar plexus, and the rumination doesn’t leave you alone, and being on guard, hyper vigilant all the time. Too much stress, too much anxiety and with my family history, I am afraid, very afraid.

Time for Ativan? Sure, I can dull my feelings of anxiety with an Ativan, but how will that make us safer, how will it stop these bad things from happening to us?

And this brings us to one more scary thing, how much control do you really have over anything in your life? At this moment, I would say very little.

And yes I know, what happens is not the important thing, Our Reaction To What Happens Is!

Yes I am grateful that, although things could have been far worse, we survived them. I mean I could have been lying face down in a stairwell in New York City, dead from a brain bleed when I hit my head against the pipe. But I survived. My son is unharmed. Fine and good, I know that. Looking at things positively doesn’t mean you have no fear, or anxiety, you do have those when bad things happen to you. And when a string of them happen, and seemingly keep happening, then what?

 

My fervent wish, my solemn prayer is that these strange, negative things stop happening to me and my family, and we live our lives in safety, peace, harmony and love. Amen.

Finally Posted in HuffPost Again

http://www.huffingtonpost.com/entry/59835acae4b03d0624b0acd4

 

2017

08/03/2017 02:06 pm ET

Something’s wrong. Since March of 2017. That was when my son got attacked by gang members in a convenient store parking lot and had to literally fight them off with his bare hands for his life. Then his car window got smashed by, presumably, some kids. A few nights ago, he was approached by some menacing people again, bringing his PTSD from the March attack to the fore, again. In the mean time I have whacked my head against a cast iron pipe so hard that I have a concussion. Also broke my little toe. Also accidentally got sliced on my arm by a very sharp knife. And yesterday was the kicker! My son’s apartment building’s roof got struck by lightening, a fire broke out in the attic. He was asleep. He smelled the smoke, NONE of the fire alarms worked! He awoke because his nose is so sensitive. It was late morning. Being on the top floor, his apartment was filling up with smoke. He searched for his cat, so very fortunately found him, threw him in his carrier and legged it out of there. His carbon monoxide level was 4 parts per million. With thoughts of his own mortality, and again, extreme danger, on his mind. But everyone made it safe it and sound. The firefighters put out the fire. The Red Cross was there, ambulances, fire trucks.

What? What is going on? This many disasters in one family? How do you tolerate the stress of one after another, yet another, yet another disaster? The what if’s are always what kill me. I know there is no such thing as what if this had happened, because very simply, it DIDN’T happen. Of course when you survive disasters, you feel fortunate and grateful. But what if he hadn’t found his cat, what if he hadn’t woken up, what if a million times over! And not just what if, but also Now What? What’s going to happen a second from now, an hour from now, a day from now? I don’t want to, but I am living in fear and anxiety and so is my son. He doesn’t sleep at night and yesterday he was saying he wishes this spate of bad luck would end. He was seeing a therapist after the March attack but stopped and doesn’t want to see her anymore. I know she was helping him, so I don’t understand why he won’t talk to her. PTSD is a bitch, she attacks you when you least expect it, anxiety levels soar, fear punches you in your solar plexus, and the rumination doesn’t leave you alone, and being on guard, hyper vigilant all the time. Too much stress, too much anxiety and with my family history, I am afraid, very afraid.

Time for Ativan? Sure, I can dull my feelings of anxiety with an Ativan, but how will that make us safer, how will it stop these bad things from happening to us?

And this brings us to one more scary thing, how much control do you really have over anything in your life? At this moment, I would say very little.

And yes I know, what happens is not the important thing, Our Reaction To What Happens Is!

Yes I am grateful that, although things could have been far worse, we survived them. I mean I could have been lying face down in a stairwell in New York City, dead from a brain bleed when I hit my head against the pipe. But I survived. My son is unharmed. Fine and good, I know that. Looking at things positively doesn’t mean you have no fear, or anxiety, you do have those when bad things happen to you. And when a string of them happen, and seemingly keep happening, then what?

 

My fervent wish, my solemn prayer is that these strange, negative things stop happening to me and my family, and we live our lives in safety, peace, harmony and love. Amen.

ALPIM (ALPIM Anxiety-Laxity-Pain-Immune-Mood — Kitt O’Malley)

I just learned about ALPIM, a spectrum disorder, from my friend Kitt O’ Malley’s blogpost. It’s reblogged below.

ALPIM stands for:

A = Anxiety disorder (mostly panic disorder);

L = Ligamentous laxity (joint hypermobility syndrome, scoliosis, double-jointedness, mitral valve prolapse, easy bruising);

P = Pain (fibromyalgia, migraine and chronic daily headache, irritable bowel syndrome, prostatitis/cystitis);

I = Immune disorders (hypothyroidism, asthma, nasal allergies, chronic fatigue syndrome); and

M = Mood disorders (major depression, Bipolar II and Bipolar III disorder, tachyphylaxis. Two thirds of patients in the study with mood disorder had diagnosable bipolar disorder and most of those patients had lost response to antidepressants).

I have this whole spectrum! Except they’ve included Bipolar II and Bipolar III (Cyclothymia) but not Bipolar I… Why, I wonder?  But what does it mean as far as cause and treatment? They know this is a spectrum, how will this help us? Besides taking our physical symptoms more seriously, I get that, that’s obviously important. But for the treatment of the mental illness, hopefully the linkage with all these physical illnesses will shed some light.

its definitely the immune system, all of the above have the involvement of the immune system! Over active immune system. Is it our immune system that is making us sick? I hope someone is studying all this in relationship to over active immune systems. That may well be where the answer lies!

Many of us living with mental illness have other chronic illnesses. Often we are not treated for our “physical” illnesses, as many doctors dismiss them as psychosomatic. “Mental” illnesses ARE “physical” illnesses, and “physical” illnesses affect our “mental” illnesses. We are not just our brains, just our bodies, just our minds, just our feelings, or just our souls. […]

via ALPIM Anxiety-Laxity-Pain-Immune-Mood — Kitt O’Malley

First Editing Of Human Embryos Carried Out In United States

Wow! They did it. They used the CRISPR (see here: https://wordpress.com/posts/bipolar1blog.com?s=crispr) gene editing technology to correct genetic defects in embryos! They didn't let the embryos divide too much. Ethics, morals, scientific problems… the future of the human race…. well just have to see!
The link and article below.
http://m.huffpost.com/us/entry/first-editing-of-human-embryos-carried-out-in-united-states_us_597a04c9e4b02a4ebb73a874?ncid=tweetlnkushpmg00000067
(Reuters) – Technology that allows alteration of genes in a human embryo has been used for the first time in the United States, according to Oregon Health and Science University (OHSU) in Portland, which carried out the research.
The OHSU research is believed to have broken new ground both in the number of embryos experimented upon and by demonstrating it is possible to safely and efficiently correct defective genes that cause inherited diseases, according to Technology Review, which first reported the news.
None of the embryos were allowed to develop for more than a few days, according to the report.
Some countries have signed a convention prohibiting the practice on concerns it could be used to create so-called designer babies.

Results of the peer-reviewed study are expected to be published soon in a scientific journal, according to OHSU spokesman Eric Robinson.
The research, led by Shoukhrat Mitalipov, head of OHSU’s Center for Embryonic Cell and Gene Therapy, involves a technology known as CRISPR that has opened up new frontiers in genetic medicine because of its ability to modify genes quickly and efficiently.
CRISPR works as a type of molecular scissors that can selectively trim away unwanted parts of the genome, and replace it with new stretches of DNA.
Scientists in China have published similar studies with mixed results.
In December 2015, scientists and ethicists at an international meeting held at the National Academy of Sciences (NAS) in Washington said it would be “irresponsible” to use gene editing technology in human embryos for therapeutic purposes, such as to correct genetic diseases, until safety and efficacy issues are resolved.
But earlier this year, NAS and the National Academy of Medicine said scientific advances make gene editing in human reproductive cells “a realistic possibility that deserves serious consideration.”
Reporting By Deena Beasley; Editing by Michael Perry

How have I done?


I was at my allergist’s office, exploring the anxiety/allergy connection. His nurse came in and asked me about my medications, what supplements I take, etc. all the routine questions. I told her about Lithium, Seroquel and then said “You know I have bipolar disorder?” She just looked at me, then asked “How have you done with it?”
How have I done with it? Well for someone with bipolar disorder, I’ve done remarkably well. I have two advanced degrees, a husband, a son, a beautiful home, even a blog.
But compared to someone “normal,” someone without any mental illnesses, I haven’t done well at all. I fight anxiety, depression, dark thoughts, emotions so intense they can be dangerous, I have no career and I worry constantly about my son. I worry he’s too much like me, ideally, he would only have an iota of me in him.
The latest thing is that my hair has started to fall out in bunches, which is a side effect of Lithium, possibly that’s what’s doing it. So now do I stop taking Lithium or lose all my hair? Also, I’ve been very clumsy lately, I have another concussion and broke my left pinky toe as a result of accidents. Clumsiness is also a side effect of Lithium. Again, do I keep having accidents or do I stop taking Lithium. Or lower the dose, which may not control my mood symptoms.
Everyday, something new, and not in a good way.
Feeling quite bad and overwhelmed. Bipolar or life? I suspect bipolar. Because I don’t always have this sick feeling in the pit of my stomach, this urge to cry, emotions sometimes so intense, I want to scream, to give up.
The diary of a manic depressive, welcome my friends, thank your lucky stars you’ll never have to live with this ghastly illness.
And yet, I won’t give up. These are the cards I’ve been dealt, I will play them with flourish and panache. And I think if I didn’t keep writing about it, no one might know what was going on inside my brain. So I keep giving myself away. But it is a release, it is therapeutic, to write. And if someone with cancer doesn’t have to hide their diagnosis and symptoms, why do mentally ill people have to be ashamed of theirs?
Oh well, I think I’m rambling now, so I’ll stop. I have no words of wisdom. I am no expert on anything. The only thing that keeps me going is my love for my son. And it is huge and it conquers all.

Disease Found in 99 Percent of Brains Donated by NFL Families

A game watched for entertainment, for players' feats of amazing athletic prowess! And in 99% of players' brains examined, there was evidence of chronic traumatic encephalopathy (CTE.)
The article below.
http://www.smithsonianmag.com/smart-news/cte-found-99-percent-brains-donated-nfl-families-180964202/?utm_source=facebook.com&utm_medium=socialmedia

The degenerative brain disease develops after repeated concussions or blows to the head

The degenerative disease, chronic traumatic encephalopathy or CTE, is common in football players, boxers, veterans and others exposed to head trauma. (Wikimedia Commons)
By Jason Daley
SMITHSONIAN.COM
JULY 25, 2017 4:07PM
311002159
Over the last decade, one of the biggest stories in sports has been the mounting evidence of chronic traumatic encephalopathy, or CTE, in football players. The degenerative brain disease develops after repeated blows to the head, and a new study finds a strong link between playing football and CTE. As Daniella Emanuel at CNN reports, the brains of 110 out of 111 NFL players that were donated to the researchers showed signs of the disease.
The study, published this week in the journal JAMAwas based on autopsies of 202 deceased football players including those who did not play beyond the high school and college level. As Emanuel reports, in addition to the NFL players, the disease was found in 48 out of 53 college players and 3 of the 14 high school players.
The brains examined for the study came from subjects that ranged in age from 23 to 89 and from every position on the football field, from punters to linebackers, Joe Ward, Josh Williams and Sam Manchester report for The New York Times. In the brains examined, the largest number of CTE cases were found in linemen, running backs and defensive backs. Eighty-six percent of the professional players in the study had severe cases of the disease as did 56 percent of the college players.
“There's no question that there's a problem in football. That people who play football are at risk for this disease,” Ann McKee, director of Boston University's CTE Center and coauthor of the study tells Emanuel. “And we urgently need to find answers for not just football players, but veterans and other individuals exposed to head trauma.”

According to the Concussion Legacy Foundation, a CTE advocacy and research group, the disease occurs when clumps of a protein called Tau, which destroy brain cells, develop after repeated head trauma. The disease usually progresses over time, causing memory loss and confusion, impaired judgment and eventually dementia. The disease usually impacts a sufferer’s mood and behavior in their 20s and 30s, progressing to cognitive impairments in their 40s and 50s. Besides football players, boxers and combat veterans are also at risk for CTE.
It's important to keep in mind that the samples in the study are not randomly selected. As McKee tells The New York Times, the study sample suffers from "tremendous" bias since most of the brains studied were donated by families that suspected their loved one suffered from CTE, which currently can only be diagnosed post-mortem. That bias makes it difficult to figure out what percentage of current football players may develop CTE.
Even so, the results strengthen the link between football and CTE and highlights what researchers don’t know. “There are many questions that remain unanswered,” McKee tells ESPN.com. "How common is this? How many years of football is too many? What is the genetic risk? Some players do not have evidence of this disease despite long playing years.”  She also notes there is a possibility that drug use, steroids, alcohol abuse and diet could also contribute to the onset and progression disease.
As ESPN.com reports, the NFL denied the links between football and CTE for years, but in 2015 the league settled a class action lawsuit brought by former players. The league will pay up to $1 billion in medical costs for 20,000 current and former players who suffered concussions and now experience potential CTE-related problems, according to NPR. In 2016, the League made it’s first public acknowledgement that there is likely a connection between playing football and CTE. And as Emanuel reports, in recent years the NFL has changed protocols surrounding concussions and discourages full-tackle football for children.

In a statement, the NFL calls the study valuable and says it is committed to supporting continued scientific research into CTE, reports Jessica Glenza at The Guardian. “My hope is we’ll stop arguing about whether or not this is a problem, or whether or not it needs to be addressed,” McKee tells Glenza. “We need to take our heads out of the sand. It’s not going away because we want it to.”