The lifestyles of modern people are different from the lifestyles ofpeople from the past.... people of the past.
Everything is different starting with the food and ending with professions.
... this sounds repetitive as the previous line covers this idea completely
And certainly one's lifestyle affects his lifespan a lot.
.... good point : ) Yes of course it does.
People are living longer now, because unlike ancient people we have comfortable heated homes,we eat fresh food, for we have refrigerators and one of the most important factors is that we have qualified medicine
... there's lots of controversy going on about the food we eat today. However, for longer lives, the main reason is that the rapid advancement of medicinal world; medicines, medical appliances and tools, medical therapies etc.