Healthy fat refers to unsaturated fatty acids, which mainly exist in avocados, nuts, fish and some vegetable oils.

Saturated fatty acids mainly exist in red meat (cattle, sheep and pigs), milk and palm oil.

Trans fatty acid is a solid fat produced by hydrogenation of vegetable oil, which belongs to synthetic fat and generally exists in cream, popcorn and fried food.

Saturated fatty acids are the main reason for weight gain, because most of the fat stored in the body is saturated fatty acids.

Extended data:

Soybean is rich in protein and calcium, and also rich in linoleic acid, which can lower cholesterol and prevent arteriosclerosis.

Oats are rich in linoleic acid and saponin, which can reduce serum total cholesterol, triglyceride and lipoprotein and prevent atherosclerosis.

Mushrooms contain glutamic acid and other 18 amino acids, which can lower blood pressure and cholesterol and prevent arteriosclerosis. It has the effects of calming the heart, protecting the liver, calming the nerves, and strengthening the excretion of wastes in the body.

Apples are rich in potassium, which can eliminate excess sodium salt in the body. Its rich fruit acid has the function of preventing fat accumulation, and can also be combined with other cholesterol-lowering substances such as vitamin C, fructose, magnesium, etc. to form new compounds, thus enhancing the effect of reducing blood fat.

Garlic essential oil contained in garlic has lipid-lowering effect, and the mixture of sulfur-containing compounds can lower blood cholesterol, prevent thrombosis, help raise high-density lipoprotein and protect heart arteries.

References:

Fat-Baidu encyclopedia