—Variations in the amount of sugar in the blood occur from many different physiologic and pathologic causes. In recent years, determination of the blood sugar in clinical cases has become of great importance, especially in diabetes. It has also been used experimentally in many fields of research. No attempt will be made to review again the literature of this subject, as this was done by McLeod,1 in 1921. Since then, all the insulin2 work has increased many fold the already enormous literature.The important thing for us to remember is that, although the normal fasting and resting blood sugar is quite constant, many different factors can raise or lower it. The chief physiologic factors involved in its control and the difficulties in studying them have been well summarized by McLeod.1Addition of glucose to the blood may be the result of: (a) absorption from
LUND CC, RICHARDSON EP. VARIATIONS IN BLOOD SUGAR IN RELATION TO OPERATION ON THE THYROID GLAND. Arch Surg. 1925;11(2):171–179. doi:10.1001/archsurg.1925.01120140002001
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