Smoking is not recommended after receiving stitches.
Although smoking does not directly affect wound healing, it may cause the patient to cough, which may shock the wound and cause pain or localized blood seepage. This may be exacerbated by wounds on the chest or abdomen, and may lead to scarring if the wound is repeatedly stretched.
Tobacco contains nicotine and tar, which are carcinogens. Nicotine, in particular, can cause the blood vessels in the localized area of the wound to contract violently, affecting the blood supply of the wound and thus affecting wound healing.
It is not recommended to smoke, drink alcohol or eat spicy food after getting stitches, as these are bad for wound healing. Proper intake of fresh fruits and green vegetables, appropriate intake of low-fat high-quality protein, can promote wound healing, while the wound try not to get wet to prevent infection.