The “new” good fat: You’ve already heard plenty about DHA, the great-for-you omega-3 fatty acid in fatty fish and algal- or fish-oil supplements. Now, research from Harvard Medical School, the Cleveland Clinic (where Dr. Mike is chief wellness officer), and universities in Hawaii and Japan suggest that omega-7s are a healthy fat with amazing powers, too. Omega-7s squelched heart-threatening LDL cholesterol and triglycerides, boosted ticker-friendly HDL, decreased fatty liver, and improved cells’ ability to take in blood sugar in several well-designed studies.

Our take? Four studies are better than one, but we need more human trials before recommending omega-7s unconditionally. Still, we’re intrigued — enough so that Dr. Mike is taking 200 mg of purified omega-7 in capsule form along with 900 mg of DHA, which we each take daily. (Always tell your doc about any supplements you take.)