The equivalent of two cups of blueberries daily improved insulin sensitivity by 22% in six weeks in insulin-resistant adults, without weight loss
Some solid data:
In a six-week randomized trial, adults with obesity and insulin resistance consumed 45 grams of freeze-dried blueberry powder daily (this is equivalent to about two cups of fresh blueberries)
Insulin sensitivity improved by approximately 22% versus 5% with placebo
Dr. Rhonda Patrick discusses these findings in her new solo episode on the science of blueberries at this timestamp, including the evidence that blueberries may also 1) lower HbA1c and 2) triglycerides in type 2 diabetes, and 3) improve post-meal glucose handling when metabolic health is already impaired