In a compelling exercise that turned medical opinions into a definitive nutrition guide, the Japanese TBS program The Doctor’s Stamp of Approval (Meii no THE Taikoban) convened 300 licensed physicians to cast individual votes for what they considered the single healthiest food on earth. The resulting top ten list offers a fascinating glimpse into how medical professionals prioritize nutrition, with familiar superfoods sharing the stage alongside some extremely divisible contenders. The champion? Natto, a traditional fermented soybean dish known for its pungent aroma and sticky texture.
The ruling was emphatic. Natto secured 52 out of 300 votes, placing it firmly in first place. Doctors on the panel pointed to a unique enzyme called nattokinase, a potent fibrinolytic agent that can help prevent blood clots, lowering the risk of myocardial infarction and stroke. The fermented powerhouse was also cited for improving bone density through vitamin K2, balancing gut microbiota, and offering protective effects against diabetes, cancer, and periodontal disease. While its strong smell and stringy consistency can be polarizing, the medical consensus is clear—the rewards far outweigh the sensory challenges.
The Top Five: Mackerel, Yogurt, and a Surprising Tofu
Mackerel (saba) claimed second place. Dr. Hidehiko Hirata, a specialist in hypertension and diet, explained that the fish’s high concentration of EPA and DHA is essential for maintaining flexible blood vessels and regulating blood pressure, providing powerful protection against cardiovascular disease.
Yogurt landed in third. Dr. Rikuo Miura from Japan Women’s University highlighted its abundant lactic acid bacteria. These probiotics not only enhance digestion and alleviate constipation, but specific strains have also been shown to reduce visceral fat, making yogurt a daily ally for weight management.
In a curveball for many viewers, frozen tofu (Koya-dofu) secured fourth place. Dr. Minoru Kaneda from Suwa Central Hospital revealed that the freeze-drying process creates what is known as “resistant protein,” which actively helps lower bad cholesterol. The transformation also concentrates the tofu’s mineral content, delivering five times more calcium and seven times more iron than its unfrozen counterpart. The article itself wryly notes that this specific health marvel might be difficult for Hong Kong residents to find locally.
Vinegar rounded out the top five. Its acetic acid was championed by experts for improving blood circulation, lowering blood pressure, and accelerating metabolism to reduce visceral fat accumulation.
The Familiar Superfoods
The lower half of the ranking validates globally recognized “superfoods.” Broccoli (6th) was endorsed by a hair clinic director for its antioxidant properties and benefits for circulation and hair growth. Tomatoes (7th) were celebrated for their lycopene content, which protects blood vessels and balances cholesterol. Avocado (8th) was praised for its plant sterols, joint health support, and detoxifying abilities.
Fermented Favorites Close the List
Kimchi (9th) impressed with its probiotic density: 100 million lactic acid bacteria per gram, comparable to a whole bottle of commercial probiotics. Experts noted that its plant-based bacteria are resilient enough to survive stomach acid and reach the gut intact, boosting immunity. Finally, apples (10th) were recommended for pectin to stabilize blood sugar and polyphenols to protect against bronchitis and hypertension.
The Takeaway for Hong Kong Readers
This ranking offers more than just dinner-table trivia; it represents a data-backed prescription from medical professionals. The overarching theme is the power of fermented foods—natto, kimchi, yogurt, and vinegar—for gut health. The list also champions nutrient density over calorie counts, encouraging a shift toward ingredients like oily fish for omegas and processed soy for concentrated minerals.
For Hong Kong foodies, this is a strong nudge to explore beyond standard greens and grains. Picking up some natto from a Japanese grocer, incorporating mackerel into weekly meals, or seeking out frozen tofu are simple, science-backed steps toward eating like a doctor. The show also produced separate rankings for the top 20 breakfast foods and top 17 high-protein foods, which you can explore for further nutritional guidance.