When you think of healthy greens, algae probably isn’t the first thing to spring to mind. So, is seaweed good for you? Absolutely. Seaweed is a rich source of thyroid-supporting iodine. It also contains minerals, vitamins, and antioxidants that could boost heart and digestive health. If you’re trying to lose weight, it might help with that, too. Seaweed refers to all kinds of algae. Here are some common types:Keep reading for the science-backed benefits of seaweed, plus tips on how to eat more of it.