I Am 102 Years Old.
I Have Never Been on a Diet.

In my village, living past ninety is not a miracle. It is Tuesday.

Okinawa has more centenarians per person than almost anywhere on Earth. We did not get here with supplements, gym memberships, or twenty-dollar smoothies. We got here with a way of eating and living that costs less than the way most people live now — and that my grandchildren asked me to finally write down before it is forgotten.

Live to 100 — The Hundred-Year Health Code is that book: 13 chapters, 87 recipes and rituals, over 200 illustrated pages. Every recipe uses ingredients you can find in an ordinary Western supermarket, with substitutions listed for every Japanese ingredient. Every ritual takes minutes, not hours.

This is not a diet. Diets end. This is how we live.

Two people turn seventy this year. Look at their ordinary day.

None of this is difficult. It is only different. The manual walks you from one column to the other in 30 days, one small habit at a time.

My grandchildren showed me what people pay to live longer. I had to sit down.

Add up what the longevity aisle takes from a household in a year. Then look at what my village has always spent instead.

Typical U.S. prices; your numbers will differ. The point will not: the habits in this book replace spending — they do not add to it.

• 01
  Hara Hachi Bu — The 80% RuleThe single habit my doctor grandchildren say matters most. How to actually do it without counting anything.
• 02
  The Okinawan PantryThe 21 staples in my kitchen, what they cost, and the exact supermarket substitutes for each.
• 03
  Rice, Tea & the Daily DrinksWhat we drink from morning to night — and the two drinks we almost never touch.
• 04
  Fermented Every DayMiso, pickles, and natto made easy — including the beginner's path for people who fear natto.
• 05
  Radio Taisō — The 6-Minute MorningThe full routine, illustrated step by step, exactly as broadcast in Japan since 1928. No equipment, no floor work required.
• 06
  Walking as a Way of LifeHow to rebuild everyday movement into a car-shaped life — errands, gardens, stairs, and the "one-stop-early" trick.
• 07
  Ikigai — A Reason to Wake UpThe gentle worksheet my village uses. Finding yours in an afternoon, at any age.
• 08
  Moai — Your Circle of FiveWhy lonely is more dangerous than lazy, and how to start a moai where you live — even if you're starting from zero.
• 09
  Sleep the Japanese WayThe evening bath, the cool room, the quiet hour. Sleep as a ritual, not a battle.
• 10
  Shun — Eating in SeasonA season-by-season table of what to buy when it's cheapest and best, adapted for North America and Europe.
• 11
  The Kitchen Medicine ShelfGinger, umeboshi, shiitake broth, and the small comforts we reach for first — with honest notes on what they can and cannot do.
• 12
  The Calm MindTea, gardening, forest walks, and the art of doing one thing at a time.
• 13
  The 30-Day TransitionA day-by-day plan that layers in one habit at a time, with shopping lists for all four weeks.