Four sea otters in California have died from a rare strain of the Toxoplasma gondii parasite that scientists said could pose a risk to human health.
Read more...Renee Martay of South Carolina has severe and permanent corneal scarring resulting in vision loss. She says it's like trying to peer through eyeglasses that have been dipped in oil.
Read more...• Users of recalled eye drops describe permanent vision problems after infections• 'Something else going on': Scientists try to unravel mystery of rising colorectal cancer rates
Read more...Nikki Lawson received the shock of her life at age 35.
Read more...Dr. Sanjay Gupta compares a healthy human brain to one affected by Alzheimer's disease.
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