A healthy diet—rich in key nutrients—can result in radiant skin and healthy hair.

Olive oil is a key staple of the Mediterranean diet. It contains very high levels of monounsaturated fats—and is chockfull of health-promoting and disease-busting antioxidants.

Inflammation is no laughing matter — but taking time to laugh and de-stress every day can help reduce inflammation and keep your body, and your skin, healthy.

To get the most antioxidants from your cup of coffee, use a medium (not dark) roast, grind the beans (stored in an airtight container) right before brewing, and brew in an espresso maker or old-fashioned percolator (brewing with coffee filters tends to strip out some of the antioxidants).

Avoid the sun's rays, if you can, by staying out of the sun altogether or seeking out the shade whenever possible.

The right diet—and daily skin care—will help keep your eyes more youthful-looking for years to come.

Wide-brimmed hats offer added sun protection for the face, ears, and the back of the neck. Baseball caps and sun visors aren't recommended as they leave the ears and the back of the neck exposed.

You need 5 to 9 servings of fruits and vegetables every day. Try to incorporate them into every meal—and snack. (One serving is one half a cup or one medium fruit/veggie.)

Beautiful skin isn't all in the genes. There's plenty you can do to, on a daily basis, to keep skin youthful and radiant.

As the Medical Director of Dermatology Associates of New York, in Westchester, NY, and founder of REPLERE, I always get questions about why free radicals are so bad for the skin and the body. That's why I wanted to explain free radicals, here, in the easiest way possible.