'Light' Smoking Takes Heavy Toll on Health

Unfortunately, there’s no such thing as a safe level of smoking. Smoking just 1 to 4 cigarettes a day can dramatically increase a person’s risk of getting heart disease and lung cancer by as much as three to five times.

Completely quitting smoking is worth it, epsecially given that “smokers die on average 10 years earlier than non-smokers but stopping, even in middle age, can halve the risk”.