Girls are entering puberty about a year earlier than they did back in the 1970s, according to global data on breast development.
The age of breast development -- which represents the first clinical sign of female puberty -- has declined an average three months per decade between 1977 and 2013, according to analysis of data combined from 30 different studies.
Older women who started menstruating at an early age have an increased risk of high blood pressure, new research suggests.
For the study, scientists analyzed data from nearly 7,900 women in China. The investigators found that early-onset menstruation was linked to a much higher chance for high blood pressure in late adulthood, even after taking into account factors such as social and...
Exposure to chemicals found in a wide array of personal care products has been linked to early puberty among girls, a new investigation warns.
The issue centers on specific chemicals including phthalates, parabens and phenols. They're found in an array of products, including perfumes, soaps, shampoos, nail polish, cosmetics, toothpaste, lipstick, hairsprays and skin lotions -- to name...
Mental health problems can last into adulthood for girls who start having their periods at an early age, a new study suggests.
Previous research had found that girls with early periods have more frequent and severe mental health disorders, such as depression, anxiety and eating disorders. They're also more prone to substance abuse, delinquency and failing or dropping out of school.