Insulin resistance is the inability to effectively utilize insulin, the hormone that moves glucose from the bloodstream into cells. Insulin resistance means that insulin is not properly communicating with cells, and it can contribute to many metabolic diseases, particularly type 2 diabetes. If you often feel lethargic and easily gain weight from consuming carbohydrates, there is a high probability that you have some degree of insulin resistance. Ask your doctor to test your fasting blood glucose and insulin levels or, if possible, run an oral glucose tolerance test.
To run an at home oral glucose tolerance test: