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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
There are more nerve cells in one human brain than there are stars in the Milky Way.
The familiar sounds of your heart are made by the heart's valves as they open and close.
Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.
Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.
![The small-scale distribution of different tree species in a Douglas-fir forest is determined by both](https://biology-forums.com/gallery/47/medium_33_22_09_11_9_40_13_1824342.jpeg)
![Apidium may be ancestral to all later higher primates and is reconstructed as looking like a small-b](https://biology-forums.com/gallery/47/medium_274477_04_02_15_12_31_02_206071166.jpeg)