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Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).
There are more nerve cells in one human brain than there are stars in the Milky Way.
Illicit drug use costs the United States approximately $181 billion every year.
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.