Harmful, it belongs to trans fat, and many people have raised objections. In fact, if the exposure level is concerned, the harm of DDT is not comparable to trans fats at all. Because no one drinks DDT directly, its residue in food is very low after all, calculated by parts per million, and the total exposure is very small. Trans fats have surrounded a variety of processed foods. It is not difficult to eat a few grams or even a dozen grams every day. If you eat more, the harm will naturally increase.

According to the investigation and determination in China, the trans fatty acid content of many kinds of oils and fats in the market is over 2%, and some hydrogenated oil products are as high as over 40%. More than 2% varieties of processed foods are also very numerous. Among them, pies, crispy biscuits, cookies, wafer biscuits, chocolate cakes and retail milk tea have the highest content.