This biphasic effect is not uncommon. Although the actions of nicotine and ethanol in the body are quite different, you also see dose-dependent effects with alcoholic beverages . Nicotine itself may also block the release of the hormone insulin . Insulin tells your cells to take up excess glucose from your blood. This means that nicotine makes people somewhat hyperglycemic , having more sugar than usual in their blood.
Some people think that nicotine also curbs their appetite so that they eat less.
Nicotine may also increase your basal metabolic rate slightly. This means that you burn more calories than you usually would when you are just sitting around. This makes it more likely that you could have a heart attack or a stroke. Inc. All rights reserved. I have heard that carbon monoxide is extremely poisonous.