0 grams of TFA means very low TFA content, not really zero. The General Principles of Nutrition Labelling for Prepackaged Foods indicate that 100g of the product concerned can be labeled as 0g of TFA if the TFA content is less than 0.3%. Therefore, 0g of TFA does not necessarily mean that the food does not contain any TFA at all, but rather it means very low fatty acid content. Unlike other fats that can be consumed in the diet, trans fats have no health benefits and are not essential nutrients for the human body, and their intake is as low as possible. The maximum recommended intake is no more than 1% of a person’s total calories for the day, or about 2 grams. Excessive intake of trans fatty acids can lead to a decrease in high-density lipoproteins and an increase in low-density lipoproteins in the blood, thus affecting cardiovascular and cerebrovascular health. At the same time, trans fatty acids can affect the absorption of essential fatty acids by the fetus, thus greatly threatening the health of the fetus, and pregnant women need to stay away from trans fatty acids. Trans fatty acids also have a certain impact on male fertility, while affecting one’s memory, and in the long run can increase the prevalence of Alzheimer’s disease. Therefore, when purchasing food, it is recommended to carefully read the description of its ingredients and try to buy food with lower content of trans fatty acids to ensure good health.