When carbohydrates are not available, the body turns to protein stored in muscles and organs. This in turn slows the metabolic rate. The body is capable of producing its own fat from excess carbohydrates and protein. There are two types of fat the body needs but can not produce. These fats are called essential fatty acids.
Linolenic acid is an essential fatty acid.
It can also be found in seeds, grains, eggs and poultry. There are two types of cholesterol. LDL cholesterol is usually high in fat and can be deposited on artery walls. On the other hand, HDL cholesterol is generated by aerobic activities and protects the body from heart disease. A ratio of four LDL to one HDL is considered normal but higher ratios are considered a risk.