Insulin Myths Debunked: Expert Clarifies Hormone's Role

Recent discussions have focused on insulin's role in aging and metabolism, but experts are clarifying common misconceptions. Dr. Sukirti Misra, an Endocrinologist, explains that insulin is not the only hormone to change with age; many others, like growth hormone and testosterone, typically decline. While weight gain and inactivity can increase insulin resistance, leading the pancreas to produce more insulin, this is a nuanced process not solely tied to aging.

Misra also debunks the idea that cardio is the only exercise to reduce insulin needs. She emphasizes that resistance training, weight loss, quality sleep, stress management, and a balanced diet are equally effective in improving insulin sensitivity. Contracting muscles during aerobic exercise do utilize glucose more efficiently, aiding in replenishing energy stores rather than immediate fat conversion.

The expert further clarifies that carbohydrates are not automatically converted to body fat. They serve as energy or are stored as glycogen in muscles and the liver. Fat storage occurs when calorie intake consistently exceeds expenditure. Therefore, managing energy balance involves multiple factors beyond just insulin levels, including genetics, sleep, and stress.

For optimal insulin sensitivity, especially for those with insulin resistance or prediabetes, a holistic approach is recommended. This includes a combination of at least 150 minutes of moderate aerobic exercise and two to three strength-training sessions weekly. A diet rich in vegetables, whole grains, and lean protein, alongside good sleep and stress management, is crucial for metabolic health.