Global cancer patterns
What can we learn from Japan?
Japan is often held up as a model for health and long life. Looking at how cancer appears there — the rates, the diet, the screening, the health system — can teach us a lot. This series explores it carefully, and is honest about what the evidence can and cannot say.
A gentle note: comparing countries is complicated, and correlation is not causation. No diet or habit guarantees prevention, and cancer can happen to anyone. We use careful wording — “linked with,” “may help” — and point you to your care team for advice about your own health.
Start here
Three reads that frame the whole series.
The big picture
How Japan and the U.S. compare, and what longevity does — and doesn't — mean for cancer.
Prevention & Risk
Comparing Japan and the United States: Cancer Rates, Lifestyle, and Healthcare
A fair, no-blame comparison of cancer in Japan and the United States — rates, lifestyle, and healthcare — and the useful lessons each can learn from the other.
9 min read · Beginner
Prevention & Risk
The Biggest Cancer Prevention Lessons We Can Learn from Japan
Bringing it together: the practical, evidence-based cancer prevention lessons Japan offers — healthy weight, daily movement, screening, and much more, no hype.
9 min read · Beginner
Prevention & Risk
Longevity and Cancer: Why Long-Living Countries Still Have Many Cancer Cases
Japan lives long and still has many cancer cases. Learn why cancer risk rises sharply with age, and why long life and lots of cancer can honestly go together.
7 min read · Beginner
Prevention & Risk
What Okinawa's Longevity Story Can and Cannot Teach Us About Cancer
Okinawa is famous for long life, but the story is often romanticized. A careful, honest look at what its longevity can — and cannot — teach us about cancer.
8 min read · Beginner
Diet, habits & lifestyle
The foods and habits often credited to Japan — and what the evidence actually supports.
Eating & Nutrition
The Japanese Diet and Cancer Risk: What We Can and Cannot Say
A balanced, honest look at the traditional Japanese diet and cancer risk — fish, vegetables, soy, green tea, rice, and salt — without hype or miracle claims.
9 min read · Beginner
Eating & Nutrition
Green Tea and Cancer: Helpful Habit or Overhyped Claim?
Is green tea a cancer fighter? A calm, balanced look at what the evidence really shows — a pleasant, healthy daily habit, not a proven cure or a magic shield.
7 min read · Beginner
Eating & Nutrition
Soy Foods, Miso, Tofu, and Cancer: What the Evidence Really Says
Does soy raise or lower cancer risk? A calm, balanced look at whole soy foods like tofu, miso, and edamame versus supplements — without any extreme claims.
8 min read · Beginner
Eating & Nutrition
Salt, Pickled Foods, and Cancer Risk: The Cautionary Side of Traditional Diets
Traditional diets aren't automatically healthy. Learn how high salt and salt-preserved foods are linked to stomach cancer — and simple ways to cut back.
7 min read · Beginner
Exercise & Healthy Living
What Japan Can Teach Us About Healthy Weight and Cancer Prevention
Excess body weight is a known cancer risk factor. Japan's historically lower obesity rates offer lessons about healthy weight — shared with kindness, not shame.
8 min read · Beginner
Exercise & Healthy Living
Walking, Daily Movement, and Cancer Prevention Lessons from Japan
Japan's walking and public-transit culture builds movement into daily life. Learn how everyday activity is linked to lower cancer risk — no gym required.
7 min read · Beginner
Prevention & Risk
Japan, Smoking, and Lung Cancer: A Changing Story
Japan once had very high male smoking rates. As smoking falls, its lung cancer story is changing. Learn about trends, secondhand smoke, and prevention.
8 min read · Beginner
Specific cancers in Japan
Why certain cancers are more or less common there.
Cancer Types
Why Stomach Cancer Is More Common in Japan
Stomach cancer is Japan's big exception. Learn how H. pylori infection, salt-preserved foods, smoking, and screening shape the risk — in plain language.
8 min read · Beginner
Cancer Types
Breast Cancer in Japan: Rising Rates and Possible Lifestyle Factors
Breast cancer rates are rising in Japan. Learn about reproductive patterns, screening, weight, alcohol, and aging — explained clearly and without blame.
8 min read · Beginner
Cancer Types
Colorectal Cancer in Japan: Why a Healthy Country Still Faces a Common Cancer
Colorectal cancer is common in Japan despite its healthy image. Learn how diet changes, aging, alcohol, weight, activity, and screening all play a part.
8 min read · Beginner
Cancer Types
Liver Cancer in Japan: Hepatitis, Alcohol, and Prevention
Liver cancer in Japan is closely tied to hepatitis B and C. Learn how vaccines, antivirals, alcohol, fatty liver, and screening shape risk and prevention.
8 min read · Beginner
Carcinogens & Regulation
HTLV-1 and Cancer
What HTLV-1 is, how it spreads, its link to an adult leukemia/lymphoma, and how transmission is reduced — based on the National Cancer Institute.
6 min read · Beginner
Screening & health systems
How screening and access to care shape outcomes.
Screening
Cancer Screening in Japan: What Works, What Is Different, and What We Can Learn
Japan screens for stomach, colorectal, breast, cervical, and lung cancer. A plain-language look at what works, what is different, and lessons for anyone.
8 min read · Beginner
Costs & Practical Help
Universal Healthcare and Cancer Outcomes: Why Access Matters
Japan's universal health coverage helps people get timely cancer care. Learn why access to screening and treatment shapes cancer outcomes — in plain language.
8 min read · Beginner