<span>They have a lower chance of second hand smoking, which is one of the leading causes to lung cancer for non-smokers. Also if given the fact that the smoker is a spouse, they won't have the price to smoke regularly taken out of their shared salaries. Finally above, if the smoker was to quit, they have a a greater possibility to live longer, refrain from injuries (such as removed limbs, the falling out of teeth, cancer, a stoma being placed in their neck, the discoloration of teeth and nails, excessive ageing, ect.) and there forth saving the individual from mutual emotional stress of dealing with a known, or loved one going through the possible side effects in the future. </span>
A 'Trend' is a large social influence if this is what you are talking about. Trends are something where one person does/wears it (usually a popular person everyone likes) and then everyone else starts doing it.
Researchers report a reduction in mortality rates by 7-19% by eliminating even one serving of red meat from your diet every day.