such as “people with this blood type age slower” are especially shareable because they are simple, personal, and easy to understand.
Scientific evidence rarely fits into such a neat statement.
A study might report an association between a blood group and one particular health outcome in a specific population. That finding may then be transformed into a headline claiming that the blood group determines longevity or aging.
Those are very different conclusions.
Association Does Not Automatically Mean Cause
This distinction is essential when reading health research.
If researchers discover that
