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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.
As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.
There are approximately 3 million unintended pregnancies in the United States each year.
The average office desk has 400 times more bacteria on it than a toilet.
The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").