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About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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.