1, which can kill directly.
Some people have obtained the following amazing results through animal experiments: even a big horse can't stand nicotine injections for 8 times and will soon die; A lively dog can be killed without injecting a drop of nicotine into the vein; In addition, after smoking for a long time, some animals can find that there is an obvious trend of vasoconstriction and even hardening.
2, it can destroy the nutrients of the human body.
Smoking will hinder the absorption of vitamin C. Nicotine has a direct destructive effect on vitamin C. If the human body lacks vitamin C for a long time, there is the possibility of scurvy.
3, can induce a variety of diseases.
Because the smoke inhaled in the body has a malignant stimulating effect on respiratory tract, digestive tract and other organs, some people think that it is an inducing factor for gastric and duodenal ulcers, respiratory tract infections, and even cancers such as oral cavity, lips, tongue, esophagus and respiratory tract.
From this point of view, smoking is harmful to human health. So try to quit smoking or smoke less. Non-smokers had better not get into this hobby.