Longevity expert Dan Buettner has stated that nutrition plays a major role in human life expectancy, highlighting a primary dietary rule that could help people live longer.
Speaking to publication InStyle, Buettner said the single most important rule for daily eating is to eat breakfast like a king, lunch like a prince, and dinner like a pauper.
Blue Zones and Healthy Morning Habits
Buettner explained that in regions known as Blue Zones, where individuals regularly reach 100 years of age, breakfast is hearty, simple, and rich in fiber.
He urged people to consider morning meal options such as rice served with beans or avocado on toast to start the day.
Blue Zones are geographic areas around the world identified by researchers as having unusually high concentrations of centenarians. Regions such as Okinawa in Japan, Sardinia in Italy, and Nicoya in Costa Rica are widely known for traditional diets centered on whole foods, legumes, and plant-based nutrition.
Buettner, an American author and National Geographic Fellow, has spent decades researching the lifestyle habits and dietary patterns of populations in these longevity hotspots.
Ideal Lunch and Dinner Schedules
For the afternoon meal, Buettner identified the ideal components of lunch as quality protein, complex carbohydrates, healthy fats, vegetables, and dairy products.
Complex carbohydrates such as whole grains digest slowly and provide sustained energy throughout the day, while quality proteins and healthy fats help maintain muscle mass and metabolic health.
In contrast, he said dinner should remain as light as possible to promote overall wellness and longevity.
Buettner added that individuals should schedule their final meal of the day two to three hours before going to sleep.
Dietary Choices for Brain Health
The advice follows earlier dietary recommendations from nutritionist Khristina Nikiforova regarding foods that improve brain function.
Nikiforova advised people to include walnuts and blueberries in their regular diet to support optimal brain health.
Walnuts are well known as rich plant sources of essential fatty acids, while blueberries contain high levels of antioxidants that help protect cognitive function over time.
