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Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

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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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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

This moose exploits the twigs and buds of woody plants for the food it needs to survive a cold north This moose exploits the twigs and buds of woody plants for the food it needs to survive a cold north
Elephants do not fully digest their food. Other animals, such as this Baboon may pick through elepha Elephants do not fully digest their food. Other animals, such as this Baboon may pick through elepha
Four different spindle attachments produce four second-division segregation patterns Four different spindle attachments produce four second-division segregation patterns
The smell, sight, and taste of food, such as freshly baked bread, triggers the release of saliva The smell, sight, and taste of food, such as freshly baked bread, triggers the release of saliva
Ranges of Food Security Ranges of Food Security
Go Green: Tips for Making More Sustainable Food Choices Go Green: Tips for Making More Sustainable Food Choices
Video: Magnetic resonance imaging (MRI)

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