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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

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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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Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Children in Baltimore (1909) pull the stringy parts from beans in preparation for canning. Photograp Children in Baltimore (1909) pull the stringy parts from beans in preparation for canning. Photograp
Aggressive and disruptive children are often not well-liked by peers and can be rejected or excluded ... Aggressive and disruptive children are often not well-liked by peers and can be rejected or excluded ...
Adults in the middle-aged group (37–42 years) score higher on measures of generativity than either ... Adults in the middle-aged group (37–42 years) score higher on measures of generativity than either ...
Large families on U.S. farms used to be common. Children helped plant and harvest crops, take care ... Large families on U.S. farms used to be common. Children helped plant and harvest crops, take care ...
Change in Bone Mass over Time In your early years, more bone mass is added than lost in your body Change in Bone Mass over Time In your early years, more bone mass is added than lost in your body
Conservation of momentum lab Conservation of momentum lab
Video: Blood Flow through the Human Heart

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