Health

Irritability, anxiety and physical tension, plus decreases in appetite and mood, were experienced by regular marijuana users who quit the drug for four weeks during a study conducted at McLean…

A little worm called Caenorhabditis elegans was the first creature to have all its genes sequenced, more than 19,000 of them. When the human genome was sequenced, researchers found that…

When its aging gene is not working right, a worm named C. elegans lives three times longer than normal, according to Harvard researcher Gary Ruvkun. The development gene keeps an…

The Web site of the American Music Therapy Association lists 57 pages of research articles published in its Journal of Music Therapy and other publications. The articles chronicle successful use…

In studies at Beth Israel Deaconess Medical Center and Dana-Farber Cancer Institute in Boston, tumors were eliminated in 25 percent of patients with widespread kidney and lethal skin cancers who…

For years, scientists have been stymied in their quest to understand dreams because they are unique events that cannot be replicated.

“Arts advocates need to stop making sweeping claims about the arts as a magic pill for turning students around academically,” says Lois Hetland, project manager of the largest, most comprehensive…

Of the more than 1,500 infants who get HIV from their infected mothers every day, 95 percent live in developing countries where the poverty level is high. Many mothers in…

Until now, no one knew the specific trigger that controls the extent to which cells called preadipocytes turn into fat cells. Harvard researchers have identified the genes GATA-2 and GATA-3…

In a major leap toward learning the basics of human biology and what makes it go awry, Harvard researchers have built the prototype of a high-tech chip that rapidly identifies…

Until now, the brain was assumed to be a side player in diabetes. “For the most part, diabetes researchers have not been looking at the brain,” said C. Ronald Kahn,…

“We don’t have any way of curing these problems,” says Nancy Joyce, a Harvard researcher who is working on saving people’s sight when their corneas deteriorate. “The only way right…

In an experiment, healthy men were placed on ventilators, and their ability to take deep breaths was controlled. As their breathing was regulated, their brains were imaged using a PET…

During the course of a 14-year study, female participants’ consumption of red meat dropped by nearly 40 percent, intake of trans fats dropped by more than 30 percent, and use…

“Hypnosis has a contentious history,” notes Stephen Kosslyn, professor of psychology at Harvard and leader of a study in which people were hypnotized to see color where only shades of…

Your thymus is a walnut-sized gland that sits just above your heart. The master gland of the immune system, one of the thymus’ chief functions is to produce T lymphocytes,…

Via an informational Website, researchers asked readers to submit samples of what they thought were head lice or louse eggs. The readers completed questionnaires that asked them their relationship to…

In 2000, nearly one-half of college students reported using tobacco products in the previous year. By including the use of cigars and smokeless tobacco, a study found a greater prevalence…

In a study, more than 460 ninth- and tenth-grade girls reported their activity levels, soda drinking habits, and history of bone fractures. A researcher found that drinking any type of…

Shari Bassuk, research fellow in the Department of Health and Social Behavior at the Harvard School of Public Health, and her colleagues have found that even mild impairments in areas…

A Harvard study followed 72,488 nurses for eight years and concluded that the more a woman exercises, the lower the odds she will suffer a stroke. Two large Harvard studies…

Psoriasis is a skin disease that disfigures people’s bodies with scaly red plaques. Thirteen patients had portions of their psoriasis patches irradiated with intense beams of ultraviolet laser light at…

“We’ve identified the molecules that we believe form the essential gears of the 24-hour clock,” says researcher Steven Reppert, who is a professor of pediatrics at Harvard-affiliated Massachusetts General Hospital.…

An area known as the putamen, located deep in the center of the brain, helps to control movement and attention. Harvard researchers believe that the putamen is involved in Attention…

What category of people do you think would be best at detecting lies? It’s not Secret Service agents, or psychiatrists, or even mothers. Investigators working at Massachusetts General Hospital in…

West Nile encephalitis infection, carried by mosquitoes, can cause the brain to swell but rarely leads to death. Many people carry the virus with mild if any symptoms, but people…

In May 2000, researchers at Harvard University announced that they had succeeded in synthesizing a complex anti-tumor drug that is more powerful than any other known drug. The drug, ecteinascidin,…

Stem cells that are naturally present in the brains of finches were induced to replace lost cells and restore the birds’ ability to sing their distinctive song. “Our results represent…

The pattern is hard to see at first because the movement seems to happen in the blink of an eye.

“Unlike infants, who share innate preferences about shapes and colors, preschoolers already differ in their artistic tastes,” says Kim Sheridan, a doctoral student at the Harvard Graduate School of Education.…