Rina Ahluwalia

The fat wrapped around your organs, called visceral fat, may drive inflammation, heart disease, and diabetes, even if you look lean. Exercise, especially strength training and short intense bursts, may shrink it faster than diet changes alone. Eating earlier in the day and cutting ultra-processed food may help too.

Visible skin aging is shaped more by collagen and elastin loss than by genes alone, and many of the inputs (nutrition, sleep, topicals) are within daily reach. The episode walks through a holistic framework called autojuvenation: anti-inflammatory eating, intermittent fasting, high-quality protein, and a two-minute daily routine using vitamin C in the morning and retinol in the evening. It is honest about the limits: excess skin after major weight loss usually needs surgery, and intermittent fasting does not tighten skin even if it may slow aging more broadly.

Tim Noakes argues that many people with weight or blood sugar problems are primarily affected by insulin resistance driven by high carbohydrate intake. In this view, cutting carbs lets insulin fall, which makes stored body fat easier to burn. In this model, insulin — not cholesterol — is the primary marker to watch, though that remains an area of active scientific debate.