Despite their small size, chia seeds are full of important nutrients. They are an excellent source of omega-3 fatty acids, rich in antioxidants, and they provide fiber, iron, and calcium. Omega-3 fatty acids help raise HDL cholesterol, the "good" cholesterol that protects against heart attack and stroke. Two tablespoons of chia seeds have almost 10 grams of fiber. That's around 40 percent of the recommended daily intake. Diets high in fiber have been linked to weight loss. According to 2015 research , eating 30 grams of fiber daily may help you lose as much weight as if you followed a more complicated diet. Chia seeds are among the healthiest foods on the planet. They’re loaded with nutrients that can have important benefits for your body and brain.