Tobacco

What is it?

The most widely misused stimulant is the drug Tobacco contained in cigarettes. Tobacco is derived from the leaves of a plant - nicotiana tabacum. Its leaves contain a chemical, nicotine, which affects the heart, blood vessels, stomach, kidneys and central nervous system.

The Highs

It gives a feeling of relaxation and may help the smoker face stressful situations more easily. Heart rate and blood pressure are increased and appetite is reduced.

The Lows

People who smoke are more likely to suffer from various health problems including heart disease, blood clots, heart attacks, bad circulation, ulcers, lung infections, bronchitis and 90% of lung cancers are believed to be caused by the chemical components in cigarette tar. Tolerance rapidly develops to the effect of nicotine and those who begin to smoke tend to become regular smokers.
If they stop they experience withdrawal symptoms such as restlessness, irritability and depression.