Harvard-trained AIIMS gut doctor reveals the best snack to reduce dangerous belly fat

Belly fat is often dismissed as a cosmetic concern, but doctors warn that the real danger lies much deeper. Visceral fat, the kind that wraps around vital organs, quietly increases the risk of diabetes, heart disease, and fatty liver. In a recent social media post, Harvard-trained AIIMS gut doctor Dr Saurabh Sethi broke down exactly how everyday food choices influence this harmful fat, and why the right snacks and meals can make a meaningful difference to long-term health.

Dr Saurabh Sethi explained that visceral fat is not about appearance or weight alone. It is metabolically active fat that sits deep inside the abdomen, surrounding organs like the liver and pancreas. This is why people with excess visceral fat often struggle with insulin resistance, inflammation, and long-term metabolic problems, even if they do not look overweight.

Best snack

According to Dr Sethi, one of the simplest dietary changes people can make is choosing the right snacks. He highlighted nuts and seeds as the best snack option for reducing visceral fat. Walnuts, almonds, chia seeds, and flaxseeds are rich in healthy fats, fibre, and anti-inflammatory compounds. These nutrients help control blood sugar spikes, improve gut health, and keep hunger in check, all of which play a role in reducing fat stored around organs.

Worst snack

On the other hand, Dr Sethi warned against ultra-processed packaged snacks. Foods with long ingredient lists, artificial additives, and refined oils may be convenient, but they actively promote visceral fat accumulation. These snacks trigger inflammation, disrupt hormones, and encourage overeating without providing real nourishment.

View this post on Instagram

A post shared by Saurabh Sethi MD MPH | Gastroenterologist (@doctor.sethi)

Best protein for visceral fat

Protein choices also matter when it comes to tackling visceral fat. Dr Sethi pointed out that fatty fish such as salmon and sardines are among the best protein sources. They are rich in omega-3 fatty acids, which help reduce inflammation and improve metabolic health. Eggs and chicken are also good options when eaten in balanced portions. For vegetarians, lentils and chickpeas offer high-quality protein along with fibre, making them supportive of fat loss and gut health.

Worst protein for visceral fat

In contrast, processed meats were listed as the worst protein choice for visceral fat. Items like sausages and deli meats are linked to higher inflammation, poor metabolic outcomes, and increased fat storage around the abdomen.

Carbs for visceral fat

Carbohydrates, too, play a crucial role. Dr Sethi recommended whole grains such as oats, barley, and millets as the best carb options for visceral fat reduction. These grains digest slowly, support stable blood sugar levels, and feed beneficial gut bacteria. Refined carbohydrates, especially white bread and pastries made from refined flour, were identified as the worst choices, as they spike glucose levels and encourage fat storage.

Dr Saurabh Sethi’s message was clear: managing visceral fat is less about extreme dieting and more about smart, consistent food choices. By prioritising whole foods, cutting back on ultra-processed items, and choosing the right balance of snacks, proteins, and carbohydrates, people can protect their organs and improve long-term health in a sustainable way.