Slowly Digestible Carbohydrates for Satiety

This trial explores how slowly digestible carbohydrates (SDCs) affect feelings of fullness by stimulating the hormone GLP-1. Researchers will test various amounts of raw corn starch, a type of SDC, to determine which amount best increases GLP-1 levels and reduces hunger, even after a second meal. Healthy adults with a normal body weight (BMI between 18.5 and 24.9) and no diabetes or digestive issues are ideal participants. As an unphased trial, this study offers participants the chance to contribute to groundbreaking research on how diet impacts hunger and fullness.

The trial does not specify if you need to stop taking your current medications, but you cannot participate if you are taking GLP-1 medications or are on weight-loss diets or restrictive eating patterns.

Research has shown that slowly digestible starches (SDS), such as those in raw corn starch, are generally easy for the body to handle. These starches break down slowly, releasing glucose (a type of sugar) into the blood gradually. This slow digestion can help manage blood sugar levels and might lower the risk of insulin resistance, a condition where the body doesn't respond well to insulin, the hormone that helps control blood sugar.

There is little evidence of serious side effects with SDS. It is often included in foods designed to help control blood sugar. Some sources mention that consuming large amounts of refined carbohydrates, like cornstarch, can raise blood sugar, but this is more concerning with excessive intake over time.

Unlike other treatments for enhancing satiety, which often rely on quick-digesting carbohydrates, the investigational use of raw corn starch (Slowly Digestible Carbohydrates, or SDC) is unique because it aims to extend the body's release of GLP-1, a hormone that promotes a feeling of fullness, for 2-3 hours after consumption. Researchers are excited about SDC because it could provide a more prolonged satiety effect compared to standard options like maltodextrin, which only increases GLP-1 levels briefly. By experimenting with low, medium, and high doses of SDC combined with maltodextrin, scientists hope to pinpoint the optimal formulation for sustained hunger control.

Research has shown that slowly digestible carbohydrates (SDCs), such as raw corn starch, can increase feelings of fullness by triggering the release of the hormone GLP-1. Studies have found that SDCs can lower blood sugar and insulin spikes after meals, potentially helping to control hunger. When digested in the ileum, a part of the small intestine, SDCs may reduce food intake by influencing brain signals related to appetite. Some research suggests that consuming larger amounts of SDCs might enhance this effect. This trial will compare different doses of SDCs—low, medium, and high—to determine their impact on satiety and GLP-1 levels. While these findings are promising, further research is needed to determine the optimal amount for fullness and the duration of these effects.¹²⁶⁷⁸