Let's look at caffeine in coffee first. In fact, there are many foods containing caffeine, such as cola, chocolate, milk tea and some desserts. Including green tea, which we all recognize as a healthy drink, actually contains caffeine, and the caffeine content in green tea is higher than that in coffee! Therefore, in fact, it is not recommended that everyone drink strong tea, and it is not recommended to drink too much tea. In fact, a small amount of caffeine intake has no obvious threat to health. If you take too much, it may have some effects on the nerves and may also produce dependence symptoms.

Drinking coffee for a long time can help prevent many common diseases in life, such as diabetes, prostate disease, breast cancer, stroke, Alzheimer's disease, Parkinson's disease and other symptoms, but there are still preconditions, that is, drinking coffee properly and drinking black coffee. Many friends say that they like coffee, but in fact they may like "instant coffee" and "Internet celebrity coffee", among which there are coffee rich in additives, such as cappuccino, mocha and latte. A lot of sucrose is added to these ordinary coffees to cover up the bitterness of coffee. Cappuccino has at least 1/3 milk bubbles, latte with a lot of milk, mocha and maybe chocolate. If these coffees are drunk for a long time, the sugar content may be high, which may have some effects on the body. Milk foam, condensed milk, cream and other ingredients may also contain hydrogenated vegetable oil, especially the additive ingredients in instant coffee. The content of hydrogenated vegetable oil is high, and it contains "trans fatty acids".

Trans fatty acids are a great threat to health. It can increase the amount of "low density lipoprotein" in blood. Low density lipoprotein can increase the concentration of cholesterol, which is one of the main factors inducing hypercholesterolemia, and also increases the incidence of atherosclerosis, which is also one of the main inducing factors of coronary heart disease.