A interesting article on this subject with a paragraph from it....
They say aging is one of the only certain things in life. But it turns out they were wrong. In recent years, gerontologists have overturned much of the conventional wisdom about getting old. Aging is not the simple result of the passage of time. According to a provocative new view, it is actually something our own bodies create, a side effect of the essential inflammatory system that protects us against infectious disease. As we fight off invaders, we inflict massive collateral damage on ourselves, poisoning our own organs and breaking down our own tissues. We are our own worst enemy.
So optimize your vitamin D, take your krill oil ( did you know that heavy metals have to be removed by manufactures of fish oil and some don't!), stay away from sugar and carbs, eat fermented foods or take a probiotic pill on a empty stomach and start thinking about using or taking turmeric ( the spice) everyday. These all reduce inflammation.