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Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).
According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
Green tea is able to stop the scent of garlic or onion from causing bad breath.
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.