WHO

Japan's women live to an average of 87.7 years — the longest female life expectancy ever recorded for a large country. At the national level, Hong Kong leads all territories at 85.5 years, while Japan tops sovereign nations at 84.7. This is a story of diet, healthcare, culture, and the biology of longevity.

Cuba has 9.54 physicians per 1,000 people — the highest doctor-to-population ratio of any large nation on earth. That is nearly three times the OECD average of 3.7, and more than six times the WHO's minimum recommended threshold of 1.5. Behind Cuba sit Monaco, Greece, Belgium, and Lithuania in a top five dominated by an unexpected mix of a Caribbean socialist state and small European nations.

Where H5N1 stands in October 2026: 72 U.S. human cases, dairy cattle spread, what would signal pandemic risk, and what CDC says about milk and vaccines.

Mpox clade I explained: how clade Ib emerged in the DRC, why WHO declared a 2024 emergency, what data show on severity and vaccines, and why it ended in 2025.

Nauru has the world's highest smoking rate — 52% of adults smoke. China has more smokers than any country: 300 million people. Smoking kills 8 million people per year — more than any other preventable cause. Yet tobacco use is rising in low-income countries as it falls in wealthy ones.

Vaccine safety is one of the most studied topics in medicine. Here's a clear, science-based examination of what the evidence really shows.