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An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

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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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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

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As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Compartments within (a) animal and (b) plant cells Compartments within (a) animal and (b) plant cells
Plant cells expand by taking up water into their vacuoles. Plant cells expand by taking up water into their vacuoles.
Apply thumb strokes on foot bottom and toes. Hold the baby’s foot bottom-up and use thumbs to ... Apply thumb strokes on foot bottom and toes. Hold the baby’s foot bottom-up and use thumbs to ...
Traction neck with head in neutral position. With recipient’s face directly up, hold head at ... Traction neck with head in neutral position. With recipient’s face directly up, hold head at ...
In the retina, there are two types of light receptor cells: Rods are sensitive to differences in lig In the retina, there are two types of light receptor cells: Rods are sensitive to differences in lig
Ligaments Hold Bones Together at a Joint Ligaments Hold Bones Together at a Joint
Video: Phases of mitosis

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