Thyroid conditions may make getting pregnant impossible.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.
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Cyanide works by making the human body unable to use oxygen.
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People about to have surgery must tell their health care providers about all supplements they take.
The peripheral nerves connect the brain and spinal cord to other parts of the body.
The cardiovascular system. A schematic view of the closed circulation of blood. The heart is section
The Global Climate System Is Very Complex
Procedures and Diagnostic Tests Related to the Male Reproductive System