Did you know?
Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.
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The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.
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Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Figure 7.1 shows the rapid decline in the trust of Americans in government since the 1960s. This de
In 2009, historian Woody Holton described how Abigail Adams shrewdly invested in the Continental Con
A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan
To search for the Native American family would be fruitless. There are rural, urban, single-parent, ...
The Sun powers on the living systems
Government Corruption versus GDP per Capita, 2009