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Americans spend hundreds of dollars annually on products to protect and improve their appearance. Around 30% of that is specifically for skincare. Well, a new study in the Journal of Investigative Dermatology may help you save big bucks and improve your skin's health. Turns out, while all the popular, vitamin C-loaded creams and treatments you buy may help your skin, eating a lot of vitamin-C-rich foods is even more effective.

Study participants who raised their blood levels of vitamin C by eating two kiwifruit daily for eight weeks saw increased collagen production (which helps prevent wrinkles) and greater renewal of their epidermis, the outer skin layer. That's beauty from the inside out.

Common fruits and veggies with the most vitamin C: one large yellow pepper provides 380% of the daily value (DV), twice the amount that's in a green sweet pepper; 3 ounces of kale delivers 103% of the DV; around 3 ounces of broccoli delivers almost 100% of the DV; a guava has 138% of the DV. FYI: one medium kiwi only delivers 62% of the DV (hence they ate two a day in the study). And one medium-sized orange? Around 92% of the DV.

For great recipes with vitamin C-loaded ingredients, check out the tasty treats, such as Vitality Smoothie, in my "What to Eat When Cookbook," and for more help preventing skin aging (and premature aging of all your body's organs), there's "The Great Age Reboot" and 4YOUngevity.com's AI-wellness coaching program.

Health pioneer Michael Roizen, M.D., is chief wellness officer emeritus at the Cleveland Clinic and author of four No. 1 New York Times bestsellers. Check out his latest, "The Great Age Reboot: Cracking the Longevity Code for a Younger Tomorrow," and find out more at www.4YOUngevity.com. Email your health and wellness questions to Dr. Mike at questions@4YOUngevity.com.

(c)2026 Michael Roizen, M.D.

Distributed by King Features Syndicate, Inc.

(c) 2026 Michael Roizen, M.D. Distributed by King Features Syndicate, Inc.