fat metabolism


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Related to fat metabolism: Lipid metabolism, protein metabolism, Carbohydrate metabolism

fat me·tab·o·lism

oxidation, decomposition, and synthesis of fats in the tissues.

fat metabolism

the biochemical process by which fats are broken down, incorporated, and used by the cells of the body. Fats provide more food energy (9 kcal/g) than carbohydrates (4.1 kcal/g). Fat catabolism begins with the hydrolysis of fats (triglycerides) into glycerol and fatty acids. Glycerol is converted into a compound that can enter the citric acid cycle. Catabolism of fatty acids continues by beta-oxidation to produce acetylcoenzyme A, which also enters the citric acid cycle. The body synthesizes fats from fatty acids and glycerol or from compounds derived from excess glucose or from amino acids. The body can synthesize only saturated fatty acids; essential unsaturated fatty acids can be supplied only by diet. Fat metabolism is controlled by hormones such as insulin, growth hormone, adrenocorticotropic hormone, and glucocorticoids. The rate of fat catabolism is inversely related to the rate of carbohydrate catabolism, and in some conditions, such as diabetes mellitus, the secretion of these hormones increases to counter a decrease in carbohydrate catabolism.

fat metabolism

The sum of the physical and chemical changes involved in the breakdown and synthesis of fats in the body. Dietary fats are digested to fatty acids and glycerol in the small intestine, absorbed, and reformed into triglycerides that are transported in the form of chylomicrons. Fats may be stored in adipose tissue as potential energy or may be broken down to provide immediate energy. The liver has enzymes for the beta-oxidation of fatty acids and their use in the Krebs cycle. Fats may be formed from excess dietary carbohydrate or amino acids. Synthetic reactions produce phospholipids and steroids.
See also: metabolism

fat me·tab·o·lism

(fat mĕ-tabŏ-lizm)
Oxidation, decomposition, and synthesis of fats in the tissues.
References in periodicals archive ?
There must be some purpose" for the genetic changes in fat metabolism, says study coauthor Philipp Khaitovich, an evolutionary biologist at the Chinese Academy of Sciences and Max Planck Society Partner Institute for Computational Biology in Shanghai.
Possible claims for such products would principally be aimed at slimming, a healthy BMI, boosting fat metabolism and supporting weight management, but could also target the sport and fitness and healthy ageing markets.
These results indicated that RAC alters the trend of fat metabolism also shifts fat towards [beta]-oxidation.
The increase in fat metabolism is especially useful for people with Diabetes in that it has been shown that glucose control is enhanced not just during the exercise but for several days post exercise (12-15).
Research on insulin and fat metabolism over the past several decades has shown that the carbohydrate hypothesis is correct, and that instead of fat and cholesterol causing heart disease, it is the carbohydrates that determine the atherogenicity of lipoproteins.
vitafusion Fiber Gummies Weight Management, which has 5-grams of fiber per serving, helps to manage weight, improve digestion and increase fat metabolism.
It has been proven that the daily intake of Wulong tea enhances fat metabolism and therefore controls obesity.
It's believed that the combination of lean protein and calcium can increase fat metabolism and maintain muscle mass.
Tonalin CLA helps reduce body fat by decreasing the amount of stored fat and increasing the rate of fat metabolism.
Mice in Japan lost weight because of increased fat metabolism when their diets were supplemented with 8 percent fish oil containing omega-3s.
This study compared the fat metabolism between "a single bout of prolonged exercise" and "repeated bouts of exercise" of equivalent exercise intensity and total exercise duration.
ABSTRACT : The experiment was conducted to investigate the effects of dihydropyridine on laying performance and fat metabolism of laying hens.