anemia
	Low levels of hemoglobin due to iron deficiency or lack of red blood cells.
blue revolution
	New techniques of fish farming that may contribute as much to human nutrition as miracle cereal grains but also may create social and environmental problems.
cash crops
	Crops that are sold rather than consumed or bartered.
chronic food shortages
	Long-term undernutrition and malnutrition; usually caused by people's lack of money to buy food or lack of opportunity to grow it themselves.
famines
	Acute food shortages characterized by large-scale loss of life, social disruption, and economic chaos.
food security
	The ability of individuals to obtain sufficient food on a day-to-day basis.
gene banks
	Storage for seed varieties for future breeding experiments.
green revolution
	Dramatically increased agricultural production brought about by "miracle" strains of grain; usually requires high inputs of water, plant nutrients, and pesticides.
hypothyroidism
	Listlessness and other metabolic symptoms caused by low thyroid hormone levels.
kwashiorkor
	A widespread human protein deficiency disease resulting from a starchy diet low in protein and essential amino acids.
malnourishment
	A nutritional imbalance caused by lack of specific dietary components or inability to absorb or utilize essential nutrients.
marasmus
	A widespread human protein deficiency disease caused by a diet low in calories and protein or imbalanced in essential amino acids.
overnutrition
	Receiving too many calories.
pellagra
	Lassitude, torpor, dermatitis, diarrhea, dementia, and death brought about by a diet deficient in tryptophan and niacin.
undernourished
	Those who receive less than 90 percent of the minimum dietary intake over a long-term time period; they lack energy for an active, productive life and are more susceptible to infectious diseases.
vitamins
	Organic molecules essential for life that we cannot make for ourselves; we must get them from our diet; they act as enzyme cofactors.

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