Show Notes
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
14:58 A tongue and pulse read, and a ferritin result
17:24 Gut warning signs: bloating, reflux, gas
18:38 Acne, rashes, and swollen joints
19:57 Depression and anxiety after a baby
20:39 Can you inherit a bad gut?
21:56 Glutamine, butyrate, and the scab rule
24:42 Fiber, and the free fixes nobody can sell you
26:34 Gluten, Roundup, and your thyroid
28:53 GLP-1s: an endocrinologist's honest take
30:42 Insulin as traffic cop
32:27 Why kids stop eating when they're full
33:15 Using GLP-1s right: protein, water, weights, then stop
34:32 Where to find Dr. Smith
35:11 An endocrinologist who wants to learn acupuncture
37:50 Teeth, meridians, and infertility
39:38 Closing thoughts
41:28 Disclaimer
Sources are included in the show notes. Educational only - not medical advice.
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