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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

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Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

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People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

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Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Structure of cholesterol and steroid hormones derived from cholesterol Structure of cholesterol and steroid hormones derived from cholesterol
Striated Muscle Fiber Striated Muscle Fiber
Cellulose structure Cellulose structure
Biosynthetic routes from pregnenolone to other steroid hormones Biosynthetic routes from pregnenolone to other steroid hormones
Action Potential in a Ventricular Fiber Action Potential in a Ventricular Fiber
Alignment of DNA, mRNA, and polypeptide Alignment of DNA, mRNA, and polypeptide
Video: Lipid digestion - mouth, stomach and small intestine

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