About this episode
Many people struggling with fatigue, weight gain, brain fog, or low libido may actually be dealing with thyroid dysfunction — and not even know it. In this episode of Healthy AF, Zane explains how common lifestyle habits like low-carb dieting, intermittent fasting, overtraining, chronic stress, and sleep deprivation can quietly disrupt thyroid function and slow your metabolism. You'll learn why markers like T3, reverse T3, and TSH matter more than most standard lab panels suggest, how the body adapts to low energy availability, and why many people with thyroid symptoms are often told their labs look "normal." Zane also breaks down the role of insulin, leptin, liver glycogen, and carbohydrate intake in thyroid hormone conversion — and why reintroducing the right foods can often restore metabolic function. If you've ever struggled with low energy, stubborn weight gain, cold intolerance, or declining performance despite dieting and training harder, this episode will help you understand what may really be happening inside your metabolism. 👇 Download Zane's Free Plan https://free40plan.com/ Follow Zane IG: https://www.instagram.com/zanegriggsfitness Supportive research Low carb diet increases incidence of REDs and low T3 https://pubmed.ncbi.nlm.nih.gov/40639795/%E2%81%A0 Low carb diet reduces T3 in athletes https://blogs.bmj.com/bjsm/2023/08/14/a-bad-situation-made-worse-low-carbohydrate-intake-amplifies-low-energy-availability-hormonal-disturbances/ Low carb diet induces low thyroid function https://pmc.ncbi.nlm.nih.gov/articles/PMC11558958/
