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With the aim of assessing the significance of relations between population trends and development in Sub-Saharan Africa, scientist have undertaken a wide-ranging survey and produce a review of the demographic situation and dynamics in this vast region. The results showed that only combined actions, embracing such aspects as education, health and family planning, would provide the possibility of eventual achievement of the Millennium Development Objectives set by the United Nations.

Newly homeless youth are likelier to engage in risky sexual behavior if they stay in nonfamily settings -- such as friends' homes, abandoned buildings or the streets -- because they lack supervision and social support. The researchers also found that, in general, U.S.-born or foreign-born Latinas were less likely to engage in sex with multiple partners than were females of other races and ethnicities.

Researchers have discovered a new structure for a key enzyme associated with celiac disease, a finding that could lead to the design of new medications for the common digestive disorder. Celiac disease is a condition in which the stomach cannot properly digest wheat and other gluten-containing foods. The disease afflicts an estimated 2 million people in the United States alone.

Only nine percent of 199 beverage samples had benzene levels above the U. S. Environmental Protection Agency limit of 5 parts per billion (ppb) for benzene in drinking water, according to a new study. The study found that product formulation, shelf-life, and storage conditions were important factors affecting benzene formation.

People who adopt four healthy behaviors -- not smoking; taking exercise; moderate alcohol intake; and eating five servings of fruit and vegetables a day -- live on average an additional 14 years of life compared with people who adopt none of these behaviors, according to a new study.

An extraordinary new scientific study documents a dramatic and unprecedented therapeutic effect in an Alzheimer's patient: improvement within minutes following delivery of perispinal etanercept, which is etanercept given by injection in the spine.

The percentage of teens who report solely positive benefits from not having sex declines precipitously with age, according to a new study. The greatest change in attitudes was among teens who became sexually experienced during the study period. For those teens, the percentage who said that not having sex resulted in only positive experiences dropped from 40 percent to 6 percent.

The link between eating oatmeal and cholesterol reduction is stronger than when the FDA initially approved the health claim's appearance on food labels in 1997, a new study shows.

A new study from Danish researchers has found that childless men have a lower risk of developing prostate cancer than fathers, and that, paradoxically, the more children a father has, the lower the risk of the disease.

Doctors know an impaired sense of smell is an early indicator of Parkinson's disease. Now they want to know if a smell test can help determine if people with no symptoms eventually develop the disease.