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Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.
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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.