Evidence

Read the Evidence Behind the Health Advice

When you want more than the short answer, start here. Each link opens a plain-language evidence review at HealthIsCalling.org so you can see what the research supports, where it is limited, and what the finding means in real life. Choose a Health Question

Key Points

Choose the health question that matches what you are trying to understand.
Each review explains the finding in plain language and links to its sources.
The review separates a useful result from a claim that goes beyond the evidence.
Our editorial standards explain how HealthIsCalling handles health information.

How Much Sleep Do Adults Need?

See what the research says about sleep duration and why regular short sleep matters.

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How Much Strength Training Do Adults Need?

Turn the two-day guideline into a clearer picture of what counts as strength work.

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HIIT or Moderate Exercise for Heart Health?

Compare high-intensity intervals with moderate activity without assuming harder always means better.

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How Social Connection Affects Health

Read what is known about loneliness, connection, and health as people age.

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Mediterranean Diet and Longer Life

Review the evidence connecting this eating pattern with lower risk of death over time.

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Browse the Full Evidence Library

See every published HealthIsCalling.org review and the sources behind it.

Read the evidence

Explore the full evidence library at HealthIsCalling.org. Explore the Evidence Library →