* Eat a balanced diet rich in fiber to keep your blood-cholesterol level low and stabilize your blood-sugar level.

* Take vitamin supplements to help regulate your body's metabolism and biochemical functions. Boost your intake of antioxidants--vitamins, minerals and enzymes that keep cell-damaging free radicals (which accelerate aging) in check. Now's the time to talk to your doctor about coenzyme [Q.sub.10], says Washington, D.C., doctor of naturopathy Andrea Sullivan. It's a heart-protecting enzyme our bodies produce that helps keep arteries unclogged, reducing the risk of heart disease, heart attack and stroke. Our production of this enzyme declines after we reach age 20.

* Skin becomes drier as we age, so step up your beauty routine with products that contain humectants, which draw moisture to your skin. Don't forget the most inexpensive hydrator of all: water. Drink up!