Not only is it rich in many important micronutrients, but some evidence shows that agar agar can help support regularity, promote satiety and enhance weight loss, giving you plenty of reasons to give this natural thickening agent a shot. Agar agar, also known simply as agar, is a gel-like substance derived from red algae. It also has a higher melting point than gelatin, making it ideal for use as a solid medium in the laboratory. In addition to its culinary benefits, agar agar is loaded with nutritional benefits as well. It may also help improve digestive health, aid in weight loss and keep your blood sugar stable..