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Vitamin B12 deficiency is one of the rare, reversible causes of hair graying through some unknown mechanism

The cigarettes are sold in a variety of countries that include United States and Europe

Smoking also compromises your immune system, making it harder for your body to fight off infections

It alters brain chemistry by stimulating dopamine release, reinforcing smoking behaviour

No combustion: Eliminates tar, carbon monoxide, and carcinogens Convenience: Easy to carry and use anywhere Flexibility: Can be used as needed for breakthrough cravings Oral fixation: Nicotine gum can help satisfy oral fixation, a common behavioural component of smoking addiction