Our skin is the largest organ on our body. Covering about 20 square feet, it helps protect us from the elements and regulate body temperature. It also happens to change as we age, and these changes may or not be embraced happily. Skin thins, wrinkles, becomes more fragile and more easily bruised. Changes below the skin affect our appearance too: the loss of fat, bone and cartilage all change the way we look over time. And we all know what sun damage can do over the years to our skin.

We exercise and eat smart to protect other organs in our body, such as our heart, our liver, our kidneys. Yet, we often overlook our skin, even though it's our largest organ. There is no shortage of skincare products available, promising to make your skin look healthier and even younger. But you may be surprised at how much of the work you can do by yourself simply by choosing the right foods to eat (and not to eat).

If you do a quick google search, you'll be overwhelmed by the number of articles that pop up telling you what to eat and what not to eat for healthy skin. These articles and lists usually contain 10, 15, even 25 foods. Rather than try to fit in or eliminate that many foods, why not focus on just a few? We found that a few key foods tend to be mentioned on many different lists and in many different articles.

Walnuts are a great source of essentially fatty acids, which help keep skin hydrated, plump and young looking. Walnuts are also filled with zinc, which helps our skin heal, fight infection and inflammation. They happen to be packed with other great antioxidants and vitamins, too.

Green Tea has many anti-aging benefits. The antioxidants found in green tea help protect the skin from environmental damage and can improve skin thickness, moisture, roughness and elasticity. Green tea also helps reduce skin redness and can even help fight against skin cancer by promoting DNA repair. The caffeine and tannins in green tea can help reduce eye puffiness and dark circles.

Avocados also contain fatty acids, so they help keep skin moist and help protect from sun damage and inflammation. The fruit contains Vitamins A, C, E, and K. Most other fruits don't contain Vitamin E, which can help reduce UV damage to skin and reduce the symptoms of atopic dermatitis. Vitamin K is a potent antioxidant. Avocados are also packed with folate and other B vitamins, which are necessary for healthy skin.

Add these to your diet and help create healthy skin within. We know life is busy and sometimes it's hard to eat healthy. Consider taking a vitamin supplement if you're not able to get these important nutrients and vitamins via your diet. Supplements can be pricey so it's smart to look for coupons to help score a better deal.

You can also avoid certain foods to help your skin stay healthy. Limit foods that can cause inflammation, such as processed and fatty meats and fried foods. Sugary foods can lead to wrinkles, so try not to over-do it on the sweets. Alcohol can really promote the aging process, so try and cut back or limit your alcohol intake. Avoiding these foods will usually make you feel better in general, as an added bonus.