Safe. Oat bran has the characteristics of water expansion, but also able to expand up to 30 times, so it can continuously resist hunger for 5 hours, which can enhance the sense of satiety, reduce the intake of other foods, naturally, in the weight loss aspect of the effect is also very prominent. And oat bran itself belongs to a kind of coarse food, very safe, but also rich in protein, and carbohydrates and dietary fiber, so that want to enhance the sense of protection, can be healthy to lose weight, choose oat bran is still very worthwhile, can be used as a kind of meal replacement products.