Systems explained
Direct answer: Public health systems are the services, policies and conditions that shape health across a whole population — housing, education, income, water, sanitation, and health services. This hub explains those systems, not any individual’s health.
Published: 28 October 2026. Updated: 28 October 2026. Refresh: every six months.
Guide in this hub
Tools in this hub
Frequently asked questions
What does “systems explained” mean here?
It means explaining how housing, education, income, services and policy shape population patterns, rather than explaining any individual’s health.
Which guide belongs in this hub?
What Are Social Determinants of Health? It is the systems guide in this build, and it links to the WHO Global Data Explorer.
Which tools belong here?
The WHO Global Data Explorer, the water, sanitation and hygiene timer and quiz, and the Five Keys checklist — all population or general-information tools.
Does this hub give personal advice?
No. It explains systems and population data only.
Where do the figures come from?
From WHO and WHO/UNICEF sources named on the tool and guide pages, with the snapshot date shown.
How often is this hub reviewed?
Every six months, or sooner when a cited source publishes a new edition.