An omnivorous diet is the most common diet globally, with non-meat diets (which can include fish) followed by over a tenth of the global population.

Agricultural science has identified several factors bearing on the growth and development of meat in animals.

The table in this section compares the nutritional content of several types of meat. While each kind of meat has about the same content of protein and carbohydrates, there is a very wide range of fat content.

Various environmental effects are associated with meat production. Among these are greenhouse gas emissions, fossil energy use, water use, water quality changes, and effects on grazed ecosystems.

Cereal-use statistic showing an estimated large fraction of crops used as fodder