Those who are on insulin must be very careful about embarking on a low-carbohydrate diet.使用胰岛素的人必须谨慎采用低碳水化合物饮食。Studies have indicated a low-carb diet can pose heart and kidney risks.研究表明低碳水化合物饮食对心脏和肾脏造成风险。New low-carb foods have flooded the marketplace.新的低碳水化合物食品已充斥市场。