Life-Time Experiments upon the Problem of Optimal Calcium Intake

Abstract
In a dietary adequate in all respects but suboptimal in riboflavin content and vitamin A value a calcium intake of 0.64 to 0.8% of the dry food, or about three to four times that of minimal adequacy, gave best results in permanent nutritional well-being, as shown by full-life experiments in three generations of rats maintained under laboratory conditions.