Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
Enamel is hardest substance in the human body.
61
Mushrooms are more closely related to humans than they are to plants.
47
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The human brain doesn't stop developing until about 25 years old.
102
Only humans shed emotional tears.
331
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
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