Omega is the last letter of the Greek alphabet, but you can bet this isn't the last you'll be hearing about purified omega-7, a healthy fatty acid like omega-3, that decreases body-wide inflammation. (Important tip: You want only purified omega-7, or palmitoleic acid, not the one from sea buckhorn. That's palmitic acid, and it INCREASES inflammation.)

Recently, we got a letter from a guy who's taking purified omega-7 and wanted to reassure his wife it was a smart move. Well, he can tell her that only good things come from taking it. In fact, she may find he's now like Alien Burt in the '70s sitcom "Soap." (If you recall, Bert had bouts of impotence with his wife Mary, but when aliens captured him and sent a replica - Alien Bert - to take over his life, including sleeping with his wife Mary, she was left without any complaints.) And here's what else purified omega-7 may do for you (the studies are preliminary):

Purified omega-7 seems to lower levels of highly specific C-reactive protein (hs-CRP). Elevated levels of hs-CRP indicate how inflamed your artery walls are. Reduce that inflammation, and you may lower your risk for heart disease, stroke, memory loss, wrinkles and even impotence. Early studies also show purified omega-7 might decrease fatty liver and insulin resistance, lower blood sugar and decrease triglyceride and lousy LDL cholesterol levels, while increasing good HDL.

We don't see any negative side effects from taking this friendly fat. That's why Dr. Mike takes 420 mg of purified omega-7 a day.

Mehmet Oz, M.D., is host of "The Dr. Oz Show," and Mike Roizen, M.D., is chief medical officer at the Cleveland Clinic Wellness Institute. To live your healthiest, visit sharecare.com. Distributed by King Features Syndicate, Inc.