After a meal, protein is broken down during the body's normal metabolic processes. Waste from this action is filtered by the kidneys, then excreted in urine. However, if the function of kidneys due to diseases deteriorates due to disease or congenital predisposition, this process of disposal does not work well. Waste enters the blood instead and causes uremia, which in turn can cause fatigue and loss of appetite. To counteract further degradation of the kidney, it is essential to reduce the ingestion of protein in order to decrease the burden on the kidneys. Staple foods, such as cooked rice and bread that contain a reduced amount of protein for such an objectives, are called "protein-adjusted food".

Not only do BTJ’s products preserve functions of the kidney but they also allow kidney patients to enjoy a more normal life via access to their staple food. In traditional low-protein diets, animal products and vegetable products are removed from the food plate, lowering the amount of calories that the body intakes. With low-protein rice, one can continue consuming valuable carbohydrates, while keeping protein levels low and calorie levels to energy enhancing amounts that patients and sufferers need to retain and maintain healthy body weights.