INTELLIGENCE, POWER, 



In civilized man, and particularly in the most advanced 

 members of the civilized group, the high energy drive 

 of the brain-heart-thyroid-adrenal-celiac-ganglion-sympa- 

 thetic system endows civilized man not only with his high 

 degree of intelligence, his great ability for sustained work, 

 his valor, his inventiveness, his control over plants and 

 animals, and his setting up of a complex civilized life but 

 also with certain diseases. 



The following discussion of the hazards of civilized man 

 in infancy, childhood, adolescence, and adult life is pre- 

 sented solely in its biological aspect, for it would seem that 

 heretofore the biological significance of these diseases 

 peculiar only to civilized man has not been fully recognized. 



At the time of fertilization of the ovum there exists 

 probably the highest metabolism per unit of mass that ever 

 appears in the life of the individual. The speed of growth of 

 the fetus is unique. The source of the energy that controls 

 this growth is identified by the increased size of the thyroid 

 and adrenal glands of the mother due to the showering by 

 these glands of growth-producing hormones upon the fetus. 

 In addition, there is a very early marked development of 

 the adrenal glands in the fetus itself. 



Dr. Quiring, who has studied the subject extensively, 

 reports that in the third month of fetal life the adrenal 

 glands weigh 0.06 gram, giving a ratio of the adrenal 

 weight to the body weight of the fetus of 1:238. At birth 

 the weight of the adrenal glands is 8.6 grams, giving a ratio 

 of the weight of the adrenal glands to the body weight of 



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