08/21/2026
Afternoon energy crash. Cravings that hit hard after lunch. Feeling hungry an hour after eating. Weight that won't move no matter what you try.
These symptoms get blamed on a lot of things like stress, hormones, or not enough sleep. And while those can all play a role, one marker that often goes unexamined is fasting insulin.
Here's why it matters:
Insulin is the hormone that moves sugar from your bloodstream into your cells. Long before blood sugar or A1C becomes abnormal, the body may start producing more and more insulin to keep glucose in a normal range. The numbers look fine on paper. But the elevated insulin is already driving symptoms.
This is one of the reasons I look at fasting insulin with clients, not just fasting glucose. It gives us an earlier window into metabolic function, and it often explains what standard bloodwork doesn't.