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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.
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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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