Why Weight Loss Feels Impossible: Insulin Resistance, Inflammation, and the GLP-1 Question
If you have been doing everything right and the weight still will not move, I want you to know the problem is usually not your effort. It is your metabolic environment. Metabolism is not a matter of willpower. It is a hormonal terrain, and when that terrain is off, fat loss becomes genuinely difficult no matter how disciplined you are.
Start with the simplest lever
Before anything complicated, look at hydration. Most women should aim for roughly 90 to 110 ounces of water a day, more if they are active, in a hot climate, drinking caffeine, or actively working on weight loss. When hunger feels excessive, energy is low, or weight loss has stalled, inadequate hydration is one of the most overlooked contributors. It costs nothing and it pays metabolic dividends quickly. Drink first, then reassess everything else.
Chronic inflammation quietly runs the show
Acute inflammation is part of God's design for healing. When you cut your finger or fight an infection, inflammation mobilizes repair and then resolves. The concern is chronic, low-grade inflammation that lingers long after any injury, sometimes called metaflammation because it is so tied to metabolic dysfunction.
This kind of inflammation disrupts hormonal signaling. It interferes with insulin sensitivity, alters cortisol regulation, and impairs leptin, the hormone that tells your brain you are full. The result is more fat storage, especially around the abdomen, and a metabolic environment that makes fat loss harder regardless of effort. A simple marker called high-sensitivity CRP helps me see it. Many labs call anything under 10 normal, but an optimal range is generally below 1, and a persistent reading between 1 and 5 should not be brushed off just because it fits inside a lab's normal limits. In functional medicine, normal and optimal are rarely the same thing.
The real driver: insulin resistance
When carbohydrates enter the bloodstream, the pancreas releases insulin to move glucose into your cells for energy. When refined carbs and sugar are consumed in excess over time, cells stop responding well, glucose stays elevated, and the pancreas pumps out more insulin to compensate. That reduced responsiveness is insulin resistance, and it is one of the primary drivers of weight gain, especially around the midsection. High insulin signals the body to store fat and makes fat burning increasingly difficult, which creates a frustrating cycle of more storage, more inflammation, and worse insulin sensitivity.
This rarely comes from one cause. Excess refined carbohydrates matter, but so do chronic stress and elevated cortisol, poor sleep, a sedentary lifestyle, alcohol, thyroid dysfunction, some medications, and hormonal shifts. Women with PCOS and women moving through perimenopause and menopause very often show increased insulin resistance. To see the picture, I look at fasting glucose, fasting insulin, and hemoglobin A1c. Many functional providers aim for an A1c between roughly 4.8 and 5.2% and a fasting insulin around 2 to 5, both markers of strong insulin sensitivity, rather than waiting for values to cross a disease threshold.
The encouraging part
Insulin resistance is common, but it is not irreversible. Improvement starts with foundational changes: reducing refined and ultra-processed carbohydrates, increasing protein to preserve muscle and improve satiety, prioritizing whole foods, and using strategic fasting to let insulin fall. Targeted support such as berberine can help, and in some cases a medication like metformin can serve as a bridge while the deeper contributors are addressed. When caught early and worked on strategically, metabolic health can be genuinely restored.
A word on GLP-1 medications
Medications like semaglutide and tirzepatide can be useful tools for carefully selected patients, especially at lower doses. My concern, particularly for women, is that they are so often prescribed without addressing the underlying metabolic and hormonal terrain. I routinely see non-diabetic women placed on diabetic-level dosing purely for weight loss, with no evaluation of thyroid function, sex hormones, cortisol, inflammation, or gut health. Appetite suppression can become excessive, leading to chronic under-eating, fatigue, and predictable muscle loss, which worsens long-term metabolism and often leaves a woman in a harder place once she stops.
These medications should never be a first response. When the foundational work has been done and weight or appetite still will not regulate, they may serve as a time-limited bridge rather than a permanent solution, ideally after optimizing thyroid function, lowering cortisol, restoring hormone balance, improving sleep, and building consistent strength training. The goal should be strategic support, not dependency.
If the scale has become a source of shame, let this reframe it. Your body is not betraying you. It is responding, logically, to an environment that can be changed.
This post is drawn from Chapter 3 of my book, Where Faith Meets Medicine, where I walk through the full metabolic picture and the exact markers I use with patients.
