Tired and Losing Hair? Check Your Ferritin

Tired, losing hair, and told your labs are “normal”? Endocrinologist Dr. Cassie Smith explains the new 2026 American Society of Hematology ferritin thresholds, why your thyroid needs iron, the pregnancy thyroid rule every woman on thyroid medication should know, the gut signs you may be ignoring, and her honest take on GLP-1 drugs. With Dr. Chris Motley.

00:00 Dr. Cassie Smith is back

01:08 Graves' disease in med school, at 130 beats a minute

02:38 "Normal" labs, and the fertility questions you sent in

03:33 Why fertility starts in the gut, and PCOS gets a new name

04:30 What birth control does to your gut bacteria

06:21 Thyroid, nutrients, and early miscarriage

07:07 Why your TSH drops when you get pregnant

08:13 On thyroid medicine? The nine-dose rule

09:07 Which probiotic? The Akkermansia gap

10:58 After a miscarriage: the labs to ask for

13:02 Thinning hair and the new ferritin guidelines