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Most foods contain a mix of some or all of the nutrient classes, together with other substances. Some nutrients can be stored internally (e.g., the fat soluble vitamins), while others are required more or less continuously. Poor health can be caused by a lack of required nutrients or, in extreme cases, too much of a required nutrient.
B-vitamins are primarily found in animal-based foods, making deficiencies more common among those with limited animal food intake due to cultural, religious, or economic reasons. For vegetarians, fortified foods can be a viable alternative to ensure adequate vitamin B12 levels, especially when reducing laxative use to improve absorption.
A heterotroph (/ ˈ h ɛ t ər ə ˌ t r oʊ f,-ˌ t r ɒ f /; [1] [2] from Ancient Greek ἕτερος (héteros) 'other' and τροφή (trophḗ) 'nutrition') is an organism that cannot produce its own food, instead taking nutrition from other sources of organic carbon, mainly plant or animal matter. In the food chain, heterotrophs are ...
Human food is food which is fit for human consumption, and which humans willingly eat. Food is a basic necessity of life, and humans typically seek food out as an instinctual response to hunger; however, not all things that are edible constitute as human food. Display of various foods
While whole foods such as fruits, vegetables, whole grains and legumes are a great way to meet nutrient needs, ultra-processed options can help diversify the diet and fill in nutritional gaps.
Some mammals are coprophagous, consuming feces to absorb the nutrients not digested when the food was first ingested. [36]: 131–137 An omnivore eats both prey and plants. Carnivorous mammals have a simple digestive tract because the proteins, lipids and minerals found in meat require little in the way of specialised digestion.
Beef steak has many important nutrients including "all essential amino acids and essential fats that humans need," says Benjamin Bikman, a cell biologist and physiologist at Brigham Young ...
Ultra-processed foods are notoriously bad for all aspects of health, but some experts are arguing we should have a more nuanced approached in discussing and evaluating their impact.