After living with this issue since 18, 1978 and now 63 . I have read countless Medical Books taken every drug and supplement advised, Only Recently Thyroid issues presented themselves . This may not apply to all. My Thyroid was always within bounds. Until I had a few Thyroid Flairs. Then reading on the thyroid. I learned that all these issues I have had as a child,, Headache , OH those are Migraines. Sick to stomach for no reason, Happens and the Cystic Acne, All teenagers get that. No Sex Drive at all, Well some people just do not have a Drive. Moon shape on Finger nails , Did not have . Eye Brows width across eyes shortened as I got older. Gout Uric acid , That is Arthritis. NO it was not , is not. Optical Floaters from the gout. All this goes back to the Thyroid. You need to be in the upper ⅓ of the Box of desired area . If not from what i read this strains the Adrenal Gland . and causes the bacteria mucus in the Colon To change .. And eventually causes the Hormone PREGNENOLONE (SO) to deplete . Without this Hormone know of your others will work , your Testoterone even with injections will just disappear . all Hormones need this Pregnenolone to work. This is a blood test 10 doctors know asked for test , one did almost 0 . Asked other 9m about this Hormone known of them even heard of it. One doctor told me because it is available over the counter it is just a scam. Then I should Him my blood test before taking and after. He walked out of the exam room. When I asked for the Thyroid test most of the doctors gave me a RX for TSH. I know know there are 10 test you need . Reading about two more new test on way. I am Nit a DR forced to be my own advocate . Ask for the test , Print them out look read . any how busy busy , have to go help yourself . What can a dr do for you x times a year with 8 minute visits