Milk

From the YapSpan Longevity Wiki · Updated 2026-10-01

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Milk is the liquid produced by the mammary glands of mammals, most often cows, and drunk on its own or used in tea, coffee, cereal and cooking. It is sold as whole milk or with part or most of the fat removed, as reduced-fat and skimmed milk. Milk supplies protein, calcium and, in whole milk, saturated fat.

A meta-analysis (a study that pools the results of earlier studies) of 11 prospective studies (studies that follow people forward in time) found that each extra 200 mL of milk a day was not clearly associated with all-cause mortality (death from any cause): a relative risk (the risk in one group relative to another) of 1.01, with a range that crossed no difference [1].

  • Each extra 200 mL of milk a day showed no clear association with all-cause mortality across 11 studies [1].
  • An earlier meta-analysis of 8 studies also found milk unrelated to total mortality [2].
  • High-fat milk was associated with 15% higher all-cause mortality in a separate meta-analysis [3].
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YapSpan estimates are for reflection and entertainment only. They are not medical advice, a diagnosis, or a prediction of any individual outcome. Check with a doctor before making any medical decision.