The top five tobacco companies represent more than 76% of the market
Although manufacturers claim that the flavoring ingredients are 'food grade' and are labeled GRAS (generally recognized as safe), these claims are only applicable for additives designed for food or ingestion and not for breathing or inhalation
What this tells us is that people who smoke shouldnt just cut downthey should aim to stop smoking altogether, study author Allan Hackshaw, Ph.D., said in a statement
It causes: lung disease including emphysema and chronic bronchitis heart and circulatory disease including heart attack, stroke and narrowing of the arteries at least 15 types of cancer including lung, mouth, throat, stomach, liver, kidney, bowel, bladder and cervix Reduced fertility in both men and women Smoking can cause bones to become weak and brittle, increasing the risk of osteoporosis in women
This is a significant difference from tobacco, where nicotine reaches the brain within seconds and strengthens the reward circuitry