Like any special diet, the bran diet is used for a specific purpose. What kind of diet benefit can a person who decides to change the way of eating can count on?
A 2013 study by Lawton CL et al. Proved that short-term (14 days) consumption of insoluble breakfast cereals containing wheat bran fibers improves subjective digestive sensations, overall well-being, and bowel function. 
The consumption of cereal fibers, mixtures of whole grains and bran, as well as whole grains reduces the risk of type 2 diabetes, obesity and cardiovascular disease. , 
The benefits can be called on the points:
- Digestive tract cleansing.
- Supply of vitamins and minerals.
- Appetite suppression.
- Normalization of metabolism.
The rules of the diet are simple, but important. Regardless of the method of use, bran require a sufficient amount of water. Without it, the product will not swell and will not work in the right direction.
- The benefit increases if the normal menu is adjusted to the healthy side, and harmful food and alcohol are completely abandoned, at least temporarily.
Nutritionists recommend not to choose one, but to mix different types of bran. Recall that this is a waste from the processing of various crops. Wheat, rye, oat - only the most famous, but there are millet, and buckwheat, and rice.
Rice bran contains amino acids, vitamins and cofactors, as well as phytochemicals with medicinal and nutritional properties. 
Dietary rice bran can have beneficial effects on certain types of cancer, such as breast, lung, liver, and colorectal cancer. The chemoprophylaxis potential is associated with biologically active phytochemicals present in rice bran, such as ferulic acid, tricin, β-sitosterol, γ-oryzanol, tocotrienols / tocopherols and phytic acid. Studies have shown that the antitumor effects of bioactive components derived from rice bran are mediated by their ability to induce apoptosis, inhibit cell proliferation and alter cell cycle progression in malignant cells. The biologically active components of rice bran protect against tissue damage by removing free radicals and blocking chronic inflammatory reactions. It was also shown that phytochemicals of rice bran activate antitumor immune responses and also affect the microenvironment of a colon tumor in favor of enhanced chemoprophylaxis of colorectal cancer. This is achieved by modulating the intestinal microflora communities and regulating enzymes. In addition, the low cost of rice production and the availability of rice bran make it an attractive candidate for global diet prophylaxis. Thus, the creation of dietary rice bran as a practical food-based chemoprophylactic can have a significant impact on cancer prevention for the entire population of the world. 
Oat bran favorably affects satiety, as well as the metabolism of carbohydrates and lipids after meals.  Oat bran significantly reduces total cholesterol, low-density lipoprotein cholesterol and apolipoprotein B. 
The physiological effects of wheat bran can be divided into nutritional effects (from the nutrients present), mechanical effects (mainly on the gastrointestinal tract, due to fiber content) and antioxidant effects (arising from the presence of phytonutrients such as phenolic acid and alkylresorcinols ) 
Studies have shown that wheat bran can have a beneficial effect on the prevention of diseases, including certain types of cancer (in particular colorectal cancer), cardiovascular diseases, obesity and certain gastrointestinal diseases, including diverticular diseases, constipation and irritable bowel syndrome (IBS) ) 
- How many types of grain - so many different bran.
The benefits depend on the duration of the diet. One-time, three-day, 2-week, tough - options for all occasions. In order for the benefit not to turn into harm, you should correctly approach the procedure: do not apply if there are contraindications and do not overdo it if they are absent. An overdose of fiber causes flatulence, weakens the absorption of drugs, some metals, including iron.