See: Doll, R., & Hill, A. B. (1950). Smoking and carcinoma of the lung; preliminary report. British medical journal, 2(4682), 739–748. doi: 10.1136/bmj.2.4682.739 pubmed central: PMC2038856
And their follow up papers. And pretty much the entire medical literature on smoking.
Smoking in general is unhealthy. Smoking can result in emphysema, COPD, pulmonary hypertension and other ugly diseases [1,2,3]. After a workout your heart and respiration rates are higher than at basal levels. Although I do not have data to back me on this, based on scientific evidence on cardiopulmonary effects  after a workout and the hazards of ...
There is not enough evidence either in support or in rebuttal...
EFFECTS OF CHRONIC OR REPEATED EXPOSURE:
Nicotine is a teratogen (capable of causing birth defects). Other developmental toxicity or reproductive toxicity risks are unknown. The information about nicotine as a carcinogen is inconclusive.
In summary, the findings of animal ...
As suggested by one small human study and one study in mice, nicotine might improve Crohn's disease in the colon but aggravate Crohn's disease in the small intestine.
Nicotine Enemas for Active Crohn's Colitis: An Open Pilot Study (Hindawi, 2008)
Thirteen patients with active rectosigmoid Crohn's diseae...were given 6 mg
nicotine enemas, each day for ...
It is a common way to demonise substances in saying that they "cause cancer". In the case of recreational or habitual tobacco smoking there is no longer much debate over whether that is true or not. "Smoking causes cancer" is a commonly accepted fact now.
But what exactly causes cancer within this model? Smoke from a cigarette is a mixture of evaporated ...
Natural Ways to quit Smoking
Candy and Gum. Sucking candy or chewing gum can occupy your mouth and time much the same as cigarettes. Even lollipops can help.
The flavor of the gum keeps the mouth fresh, making smoking less
attractive. The act of chewing relieves the desire for oral
stimulation and keeps the mouth busy.
The cool, tingly feeling ...
Not much. Unless your vegetables or teas do contain tobacco or some exotic weeds.
In the letter mentioned in the comments was an interesting table listing different plant sources of nicotine. The highest amount was reported for eggplant containing 100ng/g of nicotine. In that letter this was translated into 10g of plant material needed for a consumer to ...
Short answer: maybe a few, but not instantly.
Nicotine poisoning exists but rarely is it fatal. Especially, when it is delivered through smoking.
There have been very few incidents of death by nicotine poisoning reported.
Nicotine withdrawal can cause insomnia rather then oversleeping.
The Diagnostic and Statistical Manual of Mental Disorders (DSM-5) reports 7 primary symptoms associated with nicotine withdrawal: irritability/anger/frustration, anxiety, depressed mood, difficulty concentrating, increased appetite, insomnia, and restlessness
Well, it isn't healthy.
It will not provide you vitamins, or cure you from cold.
But it isn't very unhealthy. What that means is that there are health risks you must take into account and decide whether it worths it. Smoking hookah can also be very beneficial in terms of the way you feel. For some people, those benefits overly exceed these on ...
Yes, nicotine replacement therapy is used in multiple forms, including a skin patch and oral dosing with gums and lozenges.
The purpose is to help avoid the side effects of nicotine withdrawal, while delivering nicotine at lower doses than is obtained through smoking, to help manage craving and eventually stop smoking entirely.
As far as the delivery ...
I'd want to add to Narusan's answer the following: While nicotine by itself doesn't seem to be a carcinogen, to some degree it may be converted to carcinogenic N-nitrosonornicotine (a tobacco-specific nitrosamine) in the body, for example by bacterial activity. How much depends, among other things, on the route of administration.
If Nicotine causes cancer,...
I have done plenty of research and have found people only talking about E-Cigarettes, leaving me in confusion about if vapes without any nicotine contain harmful substances for your lungs. (I am not talking about E-Cigarettes, which I believe is a vape with nicotine.)
Colloquially “vapes” = “vaporizers”. Most vaporizers are e-cigarettes, but some are not. ...
From Nicorette.com, the below shows its instructions.
Nicorette gum comes in two strengths - 2mg and 4mg. The following shows which one to use.
If you smoke your first cigarette more than 30 minutes after waking up, use the 2 mg strength.
If you smoke your first cigarette within 30 minutes of waking up, use the 4 mg strength.
HOW TO USE ...
Skin wrinkles are generally caused by a breakdown of the collagen framework within the skin.
Collagen is a key part of your skin's structure. It forms a network of fibers within your skin that acts like a framework.
In young skin, the collagen framework is intact and the skin remains moisturized and elastic. Over time, the support structure weakens ...