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The low-cost food that is generally affordable to the poor in affluent nations is low in nutritional value and high in fats, sugars and additives. In rich countries, therefore, obesity is often a sign of poverty and malnutrition while in poorer countries obesity is more associated with wealth and good nutrition.
The undernourishment occurred despite the world's farmers producing enough food to feed around 12 billion people—almost double the current world population. [ 187 ] Malnutrition, as of 2010, was the cause of 1.4% of all disability adjusted life years .
Vitamin deficiencies may result in disease conditions. Excess of some vitamins is also dangerous to health (notably vitamin A), and animal nutrition researchers have managed to establish safe levels for some common companion animals. [5] Deficiency or excess of minerals can also have serious health consequences.
animals domesticated for food production (cattle, poultry) raw or undercooked food made from animals and unwashed vegetables contaminated with feces Giardiasis: Giardia lamblia: beavers, other rodents, raccoons, deer, cattle, goats, sheep, dogs, cats ingesting spores and cysts in food and water contaminated with feces Glanders: Burkholderia mallei.
List of aquarium diseases; List of dog diseases; List of feline diseases; List of diseases of the honey bee; List of diseases spread by invertebrates; Poultry disease; Lists of zoonotic diseases, infectious diseases that have jumped from an animal to a human
The first recommended dietary allowances for humans were developed to address fears of disease caused by food deficiencies during the Great Depression and the Second World War. [3] Due to its importance in human health, the study of nutrition has heavily emphasized human nutrition and agriculture, while ecology is a secondary concern.
Human nutrition deals with the provision of essential nutrients in food that are necessary to support human life and good health. [1] Poor nutrition is a chronic problem often linked to poverty, food security, or a poor understanding of nutritional requirements. [2]
A number of animals, wild or domesticated, carry infectious diseases and approximately 75% of wildlife diseases are vector-borne viral zoonotic diseases. [13] Zoonotic diseases are complex infections residing in animals and can be transmitted to humans. The emergence of zoonotic diseases usually occurs in three stages.