This USDA sponsored study showed that cooked black turtle beans helped with improving sensitivity to insulin in mice. The USDA data on cooked black turtle beans also show there are 24g of carbs per 100g serving. I would need to see this study reviewed by some low carb experts before I would venture to add this to my diet. I think it would all depend on how low carb you want to be. I don’t think you can consume too much of this ingredient if you’re trying to remain on a Keto Diet, however.
Adding cooked black beans to a high-fat diet improved sensitivity to insulin and other measures often related to diabetes and restored gut bacteria balance in obese mice, according to a USDA Agricultural Research Service study.
As little as the mouse-size equivalent of a single serving a day of black beans—about a half cup for a human—lowered insulin resistance 87 percent in obese mice compared to obese mice eating the same high-fat diet without the black beans. Insulin resistance is when a body’s response to the hormone insulin is impaired so glucose in the blood cannot be used for energy, resulting in high blood sugar, a factor often leading to diabetes.
Mice on the high-fat plus black beans diet also decreased low density lipoprotein (LDL) cholesterol, the so-called bad cholesterol, 28 percent and triglyceride levels 37 percent compared to mice eating the high-fat diet without black beans. These are both risk factors for cardiovascular disease.
Other diabetes-related biomarkers such as the levels of leptin, glucagon, and a group of inflammatory biochemicals were all significantly better in the mice on the high-fat plus black beans diet.Black Beans Help Fix Insulin Resistance and Gut Bacteria Balance : USDA ARS