If weight loss has felt harder than it used to, you’re not imagining it. Many women notice that despite eating better and staying active, the scale won’t move — and belly fat becomes especially stubborn. This isn’t a motivation or willpower issue. For many women over 30, it’s a metabolic shift called insulin resistance — a common condition that often starts long before diabetes and can quietly affect weight, energy, and overall health. What Is Insulin Resistance? Insulin is