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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

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Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Herbivore biomass is positively correlated with net aboveground primary production. Herbivore biomass is positively correlated with net aboveground primary production.
Pathway of urine production and elimination. Pathway of urine production and elimination.
Prolonged abuse leads to production of stress hormones that can lead to a cascade of effects ... Prolonged abuse leads to production of stress hormones that can lead to a cascade of effects ...
How to know when a function is increasing or decreasing using calculus (Part 1) How to know when a function is increasing or decreasing using calculus (Part 1)
How to calculate fuel costs How to calculate fuel costs
Role of Factors of Production in Determining Growth, 1975–2009 Role of Factors of Production in Determining Growth, 1975–2009
Video: Contraction cycle of a sarcomere

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