|
|
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.
![Photograph of an occupational therapist assisting a patient with learning independence in activities](https://biology-forums.com/gallery/47/medium_14755_27_08_12_12_17_39_8183755.jpeg)
![An embedded particle of something was found on one of the gears, making this pump worthless except ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_2_34_11_296062251.png)