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Along with nicotine, people who smoke inhale about 7,000 other chemicals in cigarette smoke. Many of these chemicals come from burning tobacco leaf. Some of these compounds are chemically active and trigger profound and damaging changes in the body.

Tobacco causes more illness and death than any other drug.

Passive smoking means breathing other people's second-hand tobacco smoke. Passive smoking increases the risk of serious illness in both children and adults.

Cannabis has many harmful effects on health.

Using a mobile phone while driving greatly increases the risk of traffic accidents.

Smoking increases the risk of mouth cancer six-fold.

Low-level exposure to cadmium over a long period of time may cause health effects because cadmium can accumulate in the body.

A diet high in fibre keeps the digestive system healthy.

Common cereal foods include bread, breakfast cereals and pasta.