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Nutritionists this year are stressing Vitamin A. Vitamin D—derived from cod or halibut liver oils, manufactured as viosterol, or developed in the body by natural or artificial sunlight—is essential for the utilization of bone building lime salts in the body.

At Philadelphia Alfred Fabian Hess of Manhattan and associates advised milk from cows fed with irradiated yeast or viosterol as an excellent general preventive.