While quitting tobacco how long does it take for your metabolism to stabilize?
Posted by: Robboe
How do you mean?
Posted by: Prince
I think he's referring to the effect that nicotine has. Nicotine is a stimulant, and there will be withdrawl, it does not really affect your metabolism any more than caffiene or ephedra does.
Here are the effects that nicotine has:
IMMEDIATE EFFECTS
increase in blood pressure
increase in heart rate
thickening of blood
narrowing of arteries
decrease in skin temperature
increase in respiration
stimulation of the central nervous system
vomiting
diarrhea
LONGTERM EFFECTS
high blood pressure
blockage of blood vessels
depletion of vitamin C
reduction in the effectiveness of the immune system
cancer of the mouth, throat, and lungs
cancer of the upper respiratory tract
bronchitis and/or emphysema
stomach ulcers
weight loss
dryness and wrinkling of the skin
production of abnormal sperm in males
Posted by: Robboe
Nictone reflects positively on leptin levels (or production, i forget exactly which). This probably explains why people tend to fatten up when they try and kick in smoking.
Posted by: Prince
I thought it would be the lack of the "stimulant"?
Posted by: Robboe
Well i doubt that helps.
I think people also eat to try and forget about smoking cravings. But the falling leptin levels from coming off the nicotine will also spur on cravings. Usually carb cravings too.
Ironically, the increased fat stores from quiting smoking (although it doesn't necessarily happen to everyone - the fattening up that is) will help restore the levels of leptin. Whether they'd get to where they were before i'm unsure. They may even surpass the previous levels!
Posted by: Prince
Why? Wouldn't it be a similar effect as caffiene and ephedra?
Posted by: Robboe
Not sure. Does nicotine affect norepinephedrine?
Posted by: stubb
Sorry, I haven't checked back lately. To explain, I am keeping my diet clean while I am quitting but I have noticed a considerable weight gain in the last 4 weeks and I was attributing it to nicotine withdrawl slowing down my metabolism. Does anyone know of any studies about this?
Posted by: Robboe
Hmmmm...i have one showing nicotine's effect on leptin.
You could always search yourself if you have time tho:
Just put in key words and sift through the results.
Posted by: Robboe
ok gents, just found the leptin study:
Eliasson B, Smith U. Leptin levels in smokers and long-term users of nicotine gum. Eur J Clin Invest 1999 Feb;29(2):145-52
Leptin levels in smokers and long-term users of nicotine gum.
Eliasson B, Smith U.
Lundberg Laboratory for Diabetes Research, Sahlgrenska University Hospital, Goteborg, Sweden. bjorn.eliasson@medicine.gu.se
BACKGROUND: The aim of this study was to examine the effects of cigarette smoking and other forms of long-term nicotine consumption on circulating leptin levels as well as the relationship between leptin levels and insulin sensitivity, measured with the euglycaemic hyperinsulinaemic clamp, in healthy middle-aged men. STUDY DESIGN: Samples from 73 subjects were analysed: 23 non-smokers, 31 smokers and 19 long-term nicotine gum chewers (NGCs) with similar ranges of age, body mass index (BMI) and per cent body fat. RESULTS: Leptin levels were higher in NGCs and smokers than in the non-smoking matched control subjects. Smoking cessation for 8 weeks further increased the leptin levels, probably due to the concomitant increase in body fat (mean +/- SD, 2.2 +/- 1.8 kg). Acute administration of one dose of nicotine nasal spray or smoking one cigarette did not significantly change the circulating leptin levels during the following 60 min. Plasma leptin concentrations were positively correlated with the proportion of body fat and negatively correlated with the degree of insulin sensitivity in each of the three subject groups. In a stepwise multiple linear regression analysis, plasma leptin concentrations were significantly correlated with the proportion of body fat, degree of insulin sensitivity and smoking status. CONCLUSION: These data show that long-term use of nicotine is associated with elevated circulating leptin levels. The increased leptin levels may be an important reason for the lower body weight in smokers. The results of this study also support the view that leptin is directly or indirectly related to insulin sensitivity in men.
PMID: 10093001 [PubMed - indexed for MEDLINE]
Posted by: Prince
Quote:
The increased leptin levels may be an important reason for the lower body weight in smokers.
Posted by: Robboe
I don't understand why you've quoted that?
That study illustrates my point of leptin possibly being a factor in why some people fattening up once they kick smoking.
What were/are you trying to get at?
btw, i can't stop laughing at your avatar.
Posted by: Prince
I was just pointing out the conclusion to the article.
speaking of avatars, what the heck is yours?
Posted by: Robboe
ah right. Yeah, that's why i posted it
And i have no idea, but it looks lazy so it's fitting i use it. it looks funny too haha...
