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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.
There are more sensory neurons in the tongue than in any other part of the body.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
Medication errors are three times higher among children and infants than with adults.
The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.