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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.

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Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

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Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

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Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Peripheral nervous system PNS Diagram Peripheral nervous system PNS Diagram
Incidence of acute hepatitis B in the United States, 1980–2008. Incidence of acute hepatitis B in the United States, 1980–2008.
The NFPA 704 marking system. This voluntary marking system is displayed at participating facilities ... The NFPA 704 marking system. This voluntary marking system is displayed at participating facilities ...
Microbiology with Diseases by Body System, 3e (Bauman) Microbiology with Diseases by Body System, 3e (Bauman)
The Oceanic Ridge System The Oceanic Ridge System
Female Reproductive System "الجهاز التناسلي للأنثى" Female Reproductive System "الجهاز التناسلي للأنثى"
Video: Mechanisms of capillary exchange (transcytosis & bulk flow)

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