Article about how long term nicotine gum (Nicorette) and lozenge users are losing their hair and teeth
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Minimizing Common
Quit Smoking Side Effects

by Joel Spitzer

cigarette butts - ready to quit smoking? Blood sugar plummets in many people when they first quit smoking.  The most common side effects felt during the first three days can often be traced back to blood sugar issues.  Symptoms such as headache, inability to concentrate, dizziness, time perception distortions, and the ubiquitous sweet tooth encountered by many, are often associated with this blood sugar drop. 

The symptoms of low blood sugar are basically the same symptoms as not having enough oxygen, similar to reactions experienced at high altitudes.  The reason being the inadequate supply of sugar and/or oxygen means the brain is getting an incomplete fuel.  If you have plenty of one and not enough of the other, your brain cannot function at any form of optimal level.  When you quit smoking, oxygen levels are often better than they have been in years, but with a limited supply of sugar it can't properly fuel your brain.

It is not that cigarettes put sugar into your blood stream; it is more of a drug interaction of the stimulant effect of nicotine that affects blood sugar levels.  Cigarettes cause the body to release its own stores of sugar and fat by a drug type of interaction.  That is how it basically operated as an appetite suppressant, affecting the satiety centers of your hypothalamus.  As far as for the sugar levels, nicotine in fact works much more efficiently than food. 

If you use food to elevate blood sugar levels, it literally takes up to 20 minutes from the time you chew and swallow the food before it is released to the blood, and thus the brain, for its desired effect of fueling your brain.  Cigarettes, by working through a drug interaction cause the body to release its own stores of sugar, but not in 20 minutes but usually in a matter of seconds.  In a sense, your body has not had to release sugar on its own in years, you have done it by using nicotine's drug effect!

This is why many people really gorge themselves on food upon cessation.  They start to experience a drop in blood sugar and instinctively reach for something sweet.  Upon finishing the food, they still feel symptomatic.  Of course they do, it takes them a minute or two to eat, but the blood sugar isn't boosted for another 18 minutes.  Since they are not feeling immediately better, they eat a little more. 

They continue to consume more and more food, minute after minute until finally they start to feel better.  Again if they are waiting for the blood sugar to go up we are talking about 20 minutes after the first swallow.  People can eat a lot of food in 20 minutes.  But they begin to believe that this was the amount needed before feeling better.  This can be repeated numerous times throughout the day thus causing a lot of calories to be consumed and causing weight gain to become a real risk.

When you abruptly quit smoking, the body is in kind of a state of loss, not knowing how to work normally since it has not worked normally in such a long time.  Usually by the third day, though, your body will readjust and release sugar as it is needed.  Without eating any more your body will just figure out how to regulate blood sugar more efficiently.

You may find though that you do have to change dietary patterns to one that is more normal for you.  Normal is not what it was as a smoker, but more what it was before you took up smoking with aging thrown in.  Some people go until evening without eating while they are smokers.  If they try the same routine as ex-smokers they will suffer side effects of low blood sugar. 

It is not that there is something wrong with them now, they were abnormal before for all practical purposes.  This doesn't mean they should eat more food, but it may mean they need to redistribute the food eaten to a more spread out pattern so they are getting blood sugar doses throughout the day as nature really had always intended.

To minimize some of the real low blood sugar effects of the first few days it really can help to keep drinking juice throughout the day.  After the fourth day though, this should no longer be necessary as your body should be able to release sugar stores if your diet is normalized. 

If you are having problems that are indicative of blood sugar issues beyond day three, it wouldn't hurt talking to your doctor and maybe getting some nutritional counseling.  In order to eliminate all future blood sugar complications caused by chronic nicotine ingestion just make and stick to a personal commitment to Never Take Another Puff!

© Joel Spitzer 1986, 2014 - All Rights Reserved

Joel Spitzer is one of America's leading smoking cessation counselors. His entire collection of quitting articles and video lessons are available online at and may be printed or used for any not-for-profit health education purpose so long as there is never any charge or cost to recipients and copyrights remain in place.

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Article written on January 5, 2006 and last updated on December 19, 2013 by John R. Polito