So, your lifestyle can affect the microscopic processes going on in your cells day in and day out. But scientists are also finding that even small amounts of healthful behavior can retard these processes so that you age more slowly.
To eat more healthfully, for example, "one bite is better than none," explained Bahram Arjmandi, chair of the department of nutrition, food and exercise sciences at Florida State University, who has extensively studied the anti-aging properties of numerous foods. His research has documented notable benefits from daily consumption of apples (cholesterol), prunes (bone density) and watermelon (blood pressure).
But you have to keep it up. It's a little like keeping your house clean: Better to pick up a little bit each day than to let it go for weeks and have to tackle a huge mess all at once.
So the message from science is that you don't have to go all out with a major new fitness regime or diet to make a difference in how long you'll live or how healthy you'll be.
Knowing that even a little effort can have a big impact, here are six simple things you can do to improve your odds of healthy aging:
Bake, don't broil
Foods cooked with high heat develop toxic compounds called advanced glycation end products, or AGEs, that accelerate aging. AGEs generate huge numbers of free radicals that build up in your blood and tissue, activating the immune system and causing chronic inflammation. And they contribute to hardening of the arteries, stiff joints, wrinkles and more, according to Helen Vlassara, director of the Diabetes and Aging Division at Mount Sinai School of Medicine in New York. Vlassara has studied AGEs for more than 30 years and published numerous peer-reviewed studies linking them to chronic health conditions and symptoms of aging.