1 is not conducive to the intellectual development of teenagers.
There have been scientific research experiments that show that mice who eat high-fat foreign fast food for a long time have weaker learning ability and worse memory than mice who eat ordinary feed. The conclusion is that if teenagers eat foreign fast food for a long time, it will damage the development of nervous system, thus affecting the development of brain and intelligence.
2. Foreign fast food has too much energy and unbalanced nutrition.
The common collocations of foreign fast food are hamburgers, French fries, drinks, fried chicken and so on. The energy contained in these common foods far exceeds the normal energy intake of the human body in one day. For example, the big patties in hamburgers contain a lot of fat; Drinks contain a lot of sugar and carbonic acid; There are also French fries and fried chicken legs, which are very hot. And these foods also contain a lot of salt. Long-term consumption will not only lead to obesity, but also cause diseases such as hypertension, hyperglycemia and hyperlipidemia.
3, induce various chronic diseases
The oil used for making foreign fast food is hydrogenated oil instead of vegetable oil. This oil contains a substance called trans fatty acid, which will affect human endocrine and endanger human health. Long-term intake can induce chronic diseases such as heart disease and diabetes.
4, leading to obesity
In foreign fast food, meat is the main food, and vegetables are particularly rare. The most common thing is that there is a lettuce leaf or tomato in the hamburger, which is seriously deficient in vitamins. Long-term consumption will lead to obesity.
To sum up, eating foreign fast food for a long time is harmful to the human body. We can eat a small amount occasionally, but not often for a long time. Eat more home-cooked meals to achieve reasonable energy and a balanced and healthy diet.