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Vaccines prevent between 2.5 and 4 million deaths every year.
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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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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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People about to have surgery must tell their health care providers about all supplements they take.
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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.