THE 6 HEALTHIEST MEATS Discover the most nutritious forms of protein If you want to lose weight and live a greener, longer life, the first step you should take is eliminating meat, right? Maybe. While red meat has been linked to higher rates of premature death, heart problems, and certain forms of cancer, it's also rich in muscle-building amino acids. You can't rely on the antibiotic- and hormone-injected supermarket fare suffocating in plastic wrap, though. Load up on these nutrient-dense, humanely raised alternatives and find out how healthy and sustainable meat can be if you stick to The 6 Healthiest Meats. Bonus Tip: Mercury in American seafood is building up in unprecedented amounts, according to a new report. Protect yourself against mercury poisoning by avoiding these 3 Surprisingly Unhealthy Seafood Picks.