How is the circulatory system affected by tobacco and alcohol?

Nicotine addiction: Nicotine is a powerful vasoconstrictor. For each cigarette smoked the arteries constrict for about an hour with the result of 50% reduction in blood flow. Nicotine shuts down your circulation. Many with nicotine addiction like its calming effect, which long term leads to ischemic complications like stroke, heart attack, limb loss and sudden death. Hope you can quit. Small amounts red wine okay.