National Institute Of Environmental Health Sciences (niehs)

This study looks at whether overweight girls start puberty earlier than girls of normal weight. Researchers will use breast ultrasound and other tests to tell the difference between breast tissue and fatty tissue. The study involves 150 healthy girls ages 8-14 who have some breas…

This study follows about 566 children who were part of an earlier infant study to see how things like growth, hormones, and feeding in early life relate to when puberty begins. Teens and their parents will fill out questionnaires, measure height and weight, and collect urine samp…

This study looks at old data from 221 women who took part in a pregnancy study in the 1980s. Researchers want to learn how things like lifestyle, drug use, and pollution affect fertility, pregnancy, and pregnancy loss. No new participants are needed, and the study only uses exist…

This study follows over 32,000 people who helped clean up the 2010 Deepwater Horizon oil spill in the Gulf of Mexico. Researchers want to see if exposure to crude oil and chemical dispersants leads to long-term health problems like heart disease, cancer, or lung issues. Participa…