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Many women develop irregular menstrual cycles which may make it difficult to become pregnant and increase the risk of osteoporosis.

Aloe is a succulent plant widely used in alternative medicine.

Mercury, also known as quicksilver, is a naturally-occurring metal that is toxic to living organisms.

Information to help kids to learn more about our environment, our health, and how NIEHS plays an important role in learning more about how the two are connected.

Science may seem like it’s a strange thing — complicated, even a mystery. But really, science is all about finding out about nature and how things work, the reasons behind every day things.

Stories for kids about the environment and health.

Click on the pictures for lots of coloring pages that can be printed!

Many people think animal allergies are caused by the fur or feathers of their pet.

Many of us have probably seen news stories about something commonly referred to as PFCs or perfluorochemicals. You may not know exactly what they are, but can probably guess that they have something to do with the environment and your health. The National Institute of Environmental Health Sciences (NIEHS) and the National Toxicology Program (NTP), an interagency testing program headquartered at NIEHS, are studying many of these compounds.

Ragweed and other weeds such as curly dock, lambs quarters, pigweed, plantain, sheep sorrel and sagebrush are some of the most prolific producers of pollen allergens