Amir Khan

Many nail polishes that claim to be free of harmful chemicals actually contain them in dangerous quantities, according to a report by the California Department of Toxic Substances Control

Woodpeckers pound their heads against trees with a force that would cause any other animal debilitating brain damage. A new study reveals why they are left unharmed.

Children who receive frequent dental X-rays are at a higher risk of developing brain tumors, according to a new study.

There are a lot of patients who have been groping in the dark for some time now, and here's an opportunity to shine a light in their brain.

Women who postpone getting pregnant often rely on in-vitro fertilization when they get older, according to a new study. But getting pregnant when you are older is not only harder, it's dangerous too.

Healthcare costs related to obesity total more than $190 billion is spent annually - - more than double previous estimates, according to a new study.

Alaska polar bears are suffering from a mysterious illness that causes fur loss and skin lesions. The illness appears similar to a disease that killed over 60 seals last summer.

One of the most promising new cancer drugs isn't new at all -- it's metformin, a commonly prescribed diabetes drug approved by the U.S. Food and Drug Administration in 1994. It may be able to suppress tumors, according to new research.

Easter is synonymous with Peeps, the sugary marshmallow candy everyone loves to eat. But how are these confections made?

U.S. schools are failing to teach sexual education to its students, according to a new study

U.S. poultry is still being given antibiotics banned by the FDA in 2005, according to a new study.

A whooping cough epidemic has broken out in Washington state, according to the Washington State Department of Health. Over 600 cases have already been reported this year.

Autism may be caused by mutations in genes inherited from fathers, according to three new studies.

The final coroner's report on Whitney Houston revealed that her death was due to drowning caused by heart disease and cocaine use.

Rising carbon dioxide levels caused temperatures to rise towards the end of the last ice age, not the other way around, according to a new study. The finding puts an end to an age-old chicken and egg debate.

The warm March experienced by most of the country broke over 7,700 records, according to the the National Oceanic and Atmospheric Administration

The birth control pill may make women less sexually attractive to their partners, according to a new study.

Bidding on the largest sale of Titanic artifacts came to a close on Monday. As the 100-year-anniversary draws near, there is renewed interest in the ship, which sank in 1912.

Researchers have discovered evidence that early human ancestors used fire over 300,000 years earlier that previously thought, according to a new study.

Tests conducted to search for natural gas and oil may be to blame for the death of 180 dolphins since February 2010, according to the Bureau of Ocean Energy Management.

The 1940 Census records highlight some major lifestyle differences between then and now. One of the biggest differences? Healthcare.

Using BMI as a measurement for obesity is unreliable, and could mean the obesity rate is double what researchers previously thought, according to a new study.

Are you a hard worker? Your caffeine fix might be slowing you down.

The controversial bird flu research that was deemed a threat to national security in December got the OK to be published by a panel of scientists on Friday.

Ten percent of autistic children bloom and grow out of their symptoms, and according to a new study, your income may be a factor.

Young adults are at a significantly higher risk of melanoma than they were 40 years ago, according to a new study.

The FDA rejected a petition that would have banned the controversial chemical BPA, a plastic hardener linked to a variety of health effects such as cancer and neurological issues.

Women infected with two separate human immunodeficiency virus strains have a stronger immune response than women infected with a single HIV strain, a finding that could assist in producing the elusive anti-HIV vaccine, according to a new study published in the journal PLoS Pathogens.

Sleep apnea may increase your risk for depression, according to a new study. Previous studies have linked sleep apnea to a host of health issues including dementia and stroke.