Stories by Rachael Rettner

Public health officials urge U.S. families to get vaccinated in preparation for what, they warn, could be a particularly bad year

A molecular signal that triggers sunburns helps the body remove sun-damaged cells before they trigger cancer. The findings could lead to new treatments for psoriasis and other inflammatory responses

Human papillomavirus spreads quickly between two people in a new relationship. Screening is advised because the virus is known to cause cervical cancer

The researchers said this is the first study to link caffeine intake with "chronotype," which classifies people by the time of day they are most alert and active

It takes longer for people to get high from this oral form of marijuana, so there is little potential for abuse

Future research is needed to find out the exact causes of pain perception differences, and which ones would be best to target for more effective pain control

Even though radiation from body scanners is likely to be very low, the doses should still be confirmed using dosimeters

Frequently breaking up long bouts of sitting with just a few minutes of light exercise helps to lower one's cancer risk

The rationale behind the recommendation is that the vaccine prevents genital warts and anal cancers in males, both of which can be caused by HPV

Activity in the brain's "hate circuit" is out of sync across the circuit's three regions, leading to self-loathing and other failures to deal appropriately with feelings of hate, research suggests

The CDC explains why this is the deadliest foodborne illness outbreak in more than a decade

Childless men in a study of 135,000 AARP members had a 17 percent higher risk of death from cardiovascular disease than fathers