Purple sections are deemed 'hazardous', red is 'unhealthy', orange is 'unhealthy for sensitive groups', and yellow is 'moderate' The unmissable smokey hue brought fears that millions of Americans could be at risk from air pollution, particularly the elderly, pregnant women and children
A minimum lethal dose of nicotine in dogs is reported at 4 mg per pound body weight, but clinical signs have been seen at a dose of 0.4mg per pound body weight
Smoking increases the risk of acquiring cancer, heart disease, stroke, lung diseases, diabetes, and chronic obstructive pulmonary disease (COPD) in addition to emphysema and chronic bronchitis
Research shows that smoking doubles the risk of developing this disease
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