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Yogurt-Induced Cataracts: Comments on Their Significance to Man

Curt P. Richter, PhD; James R. Duke, MD
JAMA. 1970;214(10):1878-1879. doi:10.1001/jama.1970.03180100068013.
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In a previous report entitled "Cataracts Produced in Rats by Yogurt," we intentionally omitted any reference to the possible significance of our findings to man.1 Press discussions, however, dealt mainly with this aspect. Further, these discussions did not distinguish between the original yogurt and commercially produced yogurt of the variety used in our experiments. The original yogurt, long used in many parts of the world, is made from whole milk, while commercial yogurt, produced extensively in this country for slimming purposes, is made from defatted milk with added skim-milk powder. We would like to make a few comments pertaining to these discussions.

The original yogurt, recommended by Metchnikoff for a long, active, healthy life, is undoubtedly one of the best of all foods known to man. It has long served as the chief source of nourishment for many people and is one of the safest of all foods in


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