An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.
The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.
Your participation in clinical studies at NIEHS helps researchers discover how your environment affects your health. Please help us find new ways to prevent, diagnose, and treat illness and disease.
Why is it so unpredictable?
Moms, help your daughters prepare for puberty by enrolling them in a new study called a Girl’s First Period.Get Your Asthma Under Control
NHALES stands for Natural History of Asthma with Longitudinal Environmental Sampling. Your participation in the NHALES Study will contribute to research on how the environment affects the human body and asthma. Please consider joining today.Powerful science for integrating genomic and environmental data to understand human health
The goal of this study is to learn more about how our environment, diet, lifestyle and genes affect our health.Part of the Demystifying a Girl’s First Period Study
Help us understand how to detect signs of hormone problems and prevent reproductive health disorders in women.By participating in the NHALES Study at NIEHS, Jeff Long has learned to manage his asthma while contributing to our understanding of the condition.