Body Insulin Sensitivity refers to how well cells in your body respond to and use insulin, a hormone that helps regulate blood sugar levels. When you have high insulin sensitivity, it means your cells are able to take up glucose from the bloodstream more efficiently, which can help lower your risk of developing type 2 diabetes or other health problems related to insulin resistance. On the other hand, low body insulin sensitivity indicates that your cells do not respond well to insulin and are less able to take up glucose from the bloodstream, leading to higher blood sugar levels and an increased risk of developing diabetes or other health issues.