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Scientists Find A Way To Scare Patients Who Can't Feel Fear

Some people with damage to a specific region of the brain called the amygdala go through life without feeling fear. Show them a scary movie and they won't scream. But breathing in air with lots of carbon dioxide can send them into a panic.

The Unexpected Side Effects Of Chemotherapy

Undergoing chemotherapy is an unpleasant and often disruptive experience that can radically transform a cancer patient's life. From nausea and hair loss, to so-called "chemo-brain" and "metal mouth," the side effects can vary drastically and many are unexpected.

Experimental Tuberculosis Vaccine Fails To Protect Infants

A study in South Africa finds that an experimental vaccine against TB didn't help protect infants very much against either infection with TB or development of disease. The results were a setback, but researchers say the field remains promising.

Concussion Issue Attracts Pre-Super Bowl Attention

Calls for better equipment and protection for players grew louder in the NFL this year. It follows growing evidence of the damage caused by repeated blows to the head, and some high-profile suicides by former players.

Shortage Of Brain Tissue Sets Autism Research Back

Autism researchers are studying post-mortem brain tissue from people with the disorder to understand how it changes the brain. The greatest demand is for tissue from children. But it's especially hard to get.