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In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.
The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.