Hypothyroidism the Unsuspected Illness, by Broda Barnes MD, is a medical classic and should be required reading for every medical student and doctor. I have read the book many times. The book contains the condensed wisdom of a lifetime of research and clinical experience with the thyroid, and it rings true today as it did in 1976. Thyroid blood tests come and go, yet human physiology remains the same.
Broda Barnes estimated that up to 40% of the population suffers from a low thyroid condition and would benefit from thyroid medication. Of course, Barnes' opinion differed with that of mainstream medicine of his time which relied dogmatically on thyroid blood tests to make the diagnosis of low thyroid. Barnes felt the blood tests were unreliable and instead used the basal temperature, history and physical examination. This medical debate regarding unreliability of thyroid blood testing continues today.
Being an astute clinician, Dr. Barnes makes a number of observations about the low thyroid condition. Firstly, low thyroid is associated with a reduced immunity to infectious diseases such as TB. Before the advent of modern antibiotics in the 1940's, most low thyroid children succumbed to infectious diseases before reaching adulthood. Secondly, low thyroid is associated with a peculiar form of skin thickening called myxedema which causes a characteristic appearance of the face, puffiness around the eyes, fullness under the chin, loss of outer eyebrows, and hair thinning or hair loss.
A third observation by Dr. Barnes is that low thyroid is associated with menstrual irregularties, miscarriages and infertility. Barnes treated thousands of young women with thyroid which restored cycle regularity and fertility. In his day, the medical system resorted to the drastic measure of hysterectomy for uncontrolled menstrual bleeding. Although today's use of birth control pills to regulate the cycles is admittedly a far better alternative, Barnes found that the simple administration of desiccated thyroid served quite well. Again, Barnes noted that blood testing was usually normal in these cases which respond to thyroid medication.
A lengthy chapter is devoted to heart attacks and the low thyroid condition. Based on autopsy data from Graz Austria, Barnes concluded that low thyroid patients who previously would have succumbed to infectious diseases in childhood go on years later to develop heart disease. Barnes also found that thyroid treatment was protective in preventing heart attacks, based on his own clinical experience. Likewise for diabetes, Dr. Barnes found that adding thyroid medication was beneficial at preventing the onset of vascular disease in diabetics. Again, blood tests are usually normal.
Dr. Barnes devotes separate chapters in the book to discussion of chronic fatigue, migraine headaches and emotional/behavioral disorders all of which respond to treatment with thyroid medication.
The final chapter describes Dr. Barnes work on obesity when he resided over a hospital ward of volunteer obese patients, and monitored everything they ate. He found that the obese patients invariably ate a high carbohydrate diet, and avoided fat. Barnes added fat back into the menu and reduced the refined carbohydrates and found that his obese patients lost 10 pounds a month with no hunger pangs.
Missing from the book are discussions of Iodine supplementation and the role of the Adrenal, both of which are covered in later updated versions of Barnes thyroid book by other authors. See Hypothyroidism Type Two by Mark Starr, and Your Thyroid by Barry Durrant Peatfield. Iodine supplementation is covered by both Derry and Brownstein. The Safe Uses of Cortisol by William McK Jefferies is the companion medical classic devoted to the adrenals and cortisol.