Two-thirds of us have experienced at least one adverse childhood experience, or ACE, such as abuse, neglect, parental substance dependence, or mental illness. Even though these events may have occurred long ago, they have the power to haunt us long into adulthood, and now we have found that they may even contribute to lifelong illness. Dr. Nadine Burke Harris, the founder/CEO of the Center for Youth Wellness and recipient of the Arnold P. Gold Foundation Humanism in Medicine Award, expands on similar topics as in her popular TED talk.

In 2009, Tiger Woods was the most famous athlete on the planet, a transcendent star of almost unfathomable fame and fortune living what appeared to be the perfect life - married to a Swedish beauty and the father of two young children. Winner of 14 major golf championships and 79 PGA Tour events, Woods was the first billion-dollar athlete, earning more than $100 million a year in endorsements from the likes of Nike, Gillette, AT&T, and Gatorade. But it was all a carefully crafted illusion. As it turned out, Woods had been living a double life for years.

So concluded the National Football League in a December 2005 scientific paper on concussions in America's most popular sport. That judgment, implausible even to a casual fan, also contradicted the opinion of a growing cadre of neuroscientists who worked in vain to convince the NFL that it was facing a deadly new scourge: A chronic brain disease that was driving an alarming number of players - including some of the all-time greats - to madness.

When we first meet the young man at the center of this extraordinary and moving story, he is one of 13 children by a mother addicted to crack; he does not know his real name, his father, his birthday, or any of the things a child might learn in school. And he has no serious experience playing organized football.

Dr. Ben Carson is known around the world for breakthroughs in neurosurgery that have brought hope where no hope existed. In Gifted Hands, he tells of his inspiring odyssey from his childhood in inner-city Detroit to his position as director of pediatric neurosurgery at Johns Hopkins Medical Institutions at age 33.

When 24-year-old Susannah Cahalan woke up alone in a hospital room, strapped to her bed and unable to move or speak, she had no memory of how she’d gotten there. Days earlier, she had been on the threshold of a new, adult life: At the beginning of her first serious relationship and a promising career at a major New York newspaper. Now she was labeled violent, psychotic, a flight risk. What happened?

Leaving a life marked by crippling setbacks and his father's doubt, in 1967 a 20-something doctor from India arrived in America with only five dollars and the desire to claim his American dream. Faced with an entirely new culture, racism, and the lasting effects of disabling childhood injuries, through hard work and perseverance he overcame all odds. Now having performed over 15,000 open-heart surgeries, more than nearly every surgeon in history, Dr. Singh reflects on his most memorable patients and his incredible personal life.

In his most powerful and important book yet, Game Change, Ken Dryden tells the riveting story of one player's life, examines the intersection between science and sport, and expertly documents the progression of the game of hockey - where it began, how it got to where it is, where it can go from here, and, just as exciting to play and watch, how it can get there.

Yahoo's lead baseball columnist offers an in-depth look at the most valuable commodity in sports - the pitching arm - and how its vulnerability to injury is hurting players and the game, from Little League to the majors.

One day in 2002 the 50-year old body of former Pittsburgh Steeler and hall of famer Mike Webster was laid on a cold table in front of pathologist Dr. Bennet Omalu. Webster's body looked to Omalu like the body of a much older man, and the circumstances of his behavior prior to his death were clouded in mystery. But when Omalu cut into Webster's brain, it appeared to be normal. Something didn't add up.

The much-anticipated debut from the Pulitzer Prize - winning New York Times reporter, Boy on Ice is a moving human story and behind-the-scenes account of a life lived in the glare of sporting fame. The tragic death of hockey star Derek Boogaard at 28 was front-page news across the country in 2011 and helped shatter the silence about violence and concussions in professional sports.

There's no such thing as an inevitable midlife crisis, Barbara Bradley Hagerty writes in this provocative, hopeful book. It's a myth, an illusion. New scientific research explodes the fable that midlife is a time when things start to go downhill for everybody. In fact, midlife can be a great new adventure, when you can embrace fresh possibilities, purposes, and pleasures. In Life Reimagined, Hagerty explains that midlife is about renewal.

In 1953, a 27-year-old factory worker named Henry Molaison - who suffered from severe epilepsy - received a radical new version of the then-common lobotomy, targeting the most mysterious structures in the brain. The operation failed to eliminate Henry’s seizures, but it did have an unintended effect: Henry was left profoundly amnesic, unable to create long-term memories. Over the next 60 years, Patient H.M., as Henry was known, became the most studied individual in the history of neuroscience, a human guinea pig who would teach us much of what we know about memory today.  

Tiaina Baul "Junior" Seau is widely considered one of the best linebackers ever to play the game. A 10-time All-Pro and 12-time Pro Bowl selection, Seau was picked for the NFL's All-Decade Team in the 1990s. His incredible career spanned two decades, during which time he played for the Chargers, Dolphins, and Patriots. In 2012, at the age of 43, Seau committed suicide with a gunshot wound to the chest. News of his death sent shockwaves through the NFL.

After five major concussions, NFL tight end Ben Utecht of the Indianapolis Colts is losing his memories. This is his powerful and emotional love letter to his wife and daughters - whom he someday may not recognize - and an inspiring message for all to live every moment fully.