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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

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It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

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Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

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Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

Herbivore biomass is positively correlated with net aboveground primary production. Herbivore biomass is positively correlated with net aboveground primary production.
Sperm whale arching back in preparation to dive off Dominica Sperm whale arching back in preparation to dive off Dominica
Block Diagram of a Dual-stage Pressure System for Dual-Stage Pressure Production of Nitric Acid Seme Block Diagram of a Dual-stage Pressure System for Dual-Stage Pressure Production of Nitric Acid Seme
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Steroid hormone receptors Steroid hormone receptors
Production efficiency vs. trophic efficiency Production efficiency vs. trophic efficiency
Video: Chromosome structural organization/ Mechanisms for chromosome movement Animation

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