Japanese Oldest Doctors: Just Eat These Every Day and You Will Live to 100

Key Concepts

Autophagy, Intermittent Fasting, Hara Hachi Bu, Enzyme-Rich Foods, Metabolic Activation, Antioxidant Generation, Cellular Repair, Longevity, Plant-Based Diet, Fasting Windows.

What is Autophagy?

Autophagy is the body's natural cellular recycling system, acting as a built-in detox mechanism. It involves the breakdown and removal of damaged cellular components, paving the way for healthier cells. Dr. Yoshinori Ohsumi, the Nobel laureate who discovered autophagy, emphasized its activation during fasting or stress, aiding in cellular repair, weight management, and disease prevention, including cancer. He stated, "Without autophagy, our cells cannot survive," highlighting its importance for balance, energy, and resilience. Dr. Ohsumi's core philosophy emphasizes collaboration and openness in scientific progress. Research has linked autophagy to aging, cancer prevention, neurodegenerative diseases, and immunity. Supporting this internal cleaning system is crucial for long-term health.

Tip #1: Activate Autophagy with Intermittent Fasting

Intermittent fasting, a traditional Japanese practice, involves creating a daily window of time without eating to allow the body to shift from digestion to cellular repair. Many Japanese researchers advocate for a 12 to 16-hour fasting period. Dr. Takayuki Teruya specializes in the metabolic effects of fasting, highlighting that it enhances metabolism, boosts antioxidant production, and may slow down aging.

Dr. Teruya's research insights include:

• Metabolic Activation During Fasting: Fasting stimulates metabolic pathways, increasing the production of metabolites involved in energy production and antioxidant defense, rejuvenating metabolic processes.
• Antioxidant Generation: Fasting elevates antioxidant levels, neutralizing harmful free radicals and preventing oxidative stress-related diseases.
• Potential Anti-Aging Effects: Fasting may mitigate some effects of aging by activating specific metabolic reactions, supporting cellular repair mechanisms and longevity.

Dr. Teruya emphasizes fasting's role in revitalizing metabolism, strengthening antioxidant defenses, and potentially extending lifespan.

Tip #2: Practice Hara Hachi Bu

Hara hachi bu is a traditional Japanese practice of stopping eating when 80% full. Rooted in Okinawan culture and supported by longevity studies, it encourages mindful eating and calorie restriction without malnutrition, allowing the body to enter autophagy. This reduces metabolic stress and gives the body more time for self-repair. Okinawa, a Blue Zone, naturally practices this approach with early, light dinners and long periods without late-night snacking, creating an overnight fasting window.

Dr. Shagi Hinohara, a respected longevity expert, lived this philosophy, working until 105. He advocated eating light, avoiding excess sugar and processed foods, and following hara hachi bu to prevent excess weight gain and contribute to longevity. He also promoted staying active, taking the stairs, and walking daily. He warned against over-relying on doctors, advocating for preventive care, a positive mindset, and personal responsibility for one's own health. He emphasized lifelong learning, curiosity, and enjoying life.

Tip #3: Foods to Fully Activate Autophagy

Dr. Yumi Ishihara, the personal doctor to Japan's prime minister, advocates for modified fasting, including a liquid breakfast of freshly squeezed carrot or apple juice, skipping lunch in favor of black tea with black sugar and ginger, and consuming one solid meal per day. This creates long fasting windows that support cellular rejuvenation and autophagy. Dr. Ishihara emphasizes the importance of practices like hara hachi bu to encourage longevity and prevent overeating.

Dr. Ishihara's liquid breakfast:

• Carrot Juice: Rich in beta-carotene and vitamin A, supports skin and eye health and liver detoxification, while also offering an alkalizing effect on the stomach.
• Apple Juice: Full of antioxidants like quercetin, restores electrolytes and supports good health with its natural pectin.

It's best to drink a small amount first, about half a glass, and wait 10 to 20 minutes before eating solid foods. Pairing your juice with a handful of nuts or a spoonful of olive oil can help slow sugar absorption and keep your energy levels balanced.

Black tea with black sugar and ginger is also recommended. Black tea is rich in antioxidants that support heart health and metabolism, while black sugar (kokuto) is a natural alternative to refined sugar, providing minerals like iron, calcium, and potassium. Ginger adds powerful anti-inflammatory properties, aids digestion, improves circulation, and boosts immunity.

Limiting solid meals to one or two per day is advised, emphasizing a plant-based, whole-food diet. A traditional Japanese diet rich in vegetables, seaweed, fermented foods, fish, and legumes like soybeans, natto, and miso, combined with whole grains such as brown rice and barley, provides the nutrients your body needs to thrive while supporting autophagy.

Dr. Hiromi Shinya, a gastroenterologist, promoted a diet rich in enzymes, fresh vegetables, and fruits, and low in meat to maintain a healthy gut and prevent unnecessary metabolic stress. His Shinya Biozyme Theory advocates for a plant-based diet that complements autophagy by supporting digestive health and reducing inflammation.

Dr. Shinya introduced the "Shinya Little Fast," a 16-hour fasting period with an early dinner and a late breakfast. He also emphasized the importance of hydration, recommending starting the day with a couple of glasses of clean water on an empty stomach. Japanese sencha green tea, rich in catechin antioxidants, can also mildly support autophagy and overall health.

Processed foods and excess sugar should be avoided, as they can cause insulin spikes that suppress autophagy. Processed meats and chemical additives also harm good health and metabolism.

Conclusion

By embracing intermittent fasting, practicing hara hachi bu, eating plant-based whole foods, and avoiding excess sugar and processed foods, individuals can activate autophagy and support their body's natural repair processes, inspired by the wisdom of Japanese scientists and their approaches to health and longevity.