<P> High plasma levels of insulin in the blood plasma (e.g. after meals) cause the dephosphorylation of acetyl - CoA carboxylase, thus promoting the formation of malonyl - CoA from acetyl - CoA, and consequently the conversion of carbohydrates into fatty acids, while epinephrine and glucagon (released into the blood during starvation and exercise) cause the phosphorylation of this enzyme, inhibiting lipogenesis in favor of fatty acid oxidation via beta - oxidation . </P> <P> Disorders of fatty acid metabolism can be described in terms of, for example, hypertriglyceridemia (too high level of triglycerides), or other types of hyperlipidemia . These may be familial or acquired . </P> <P> Familial types of disorders of fatty acid metabolism are generally classified as inborn errors of lipid metabolism . These disorders may be described as fatty oxidation disorders or as a lipid storage disorders, and are any one of several inborn errors of metabolism that result from enzyme defects affecting the ability of the body to oxidize fatty acids in order to produce energy within muscles, liver, and other cell types . </P>

Carbohydrates are necessary for burning fatty acids because they increase levels of acetyl co-a