The primary concern regarding GLP-1s and the thyroid isn't about general "sluggishness" or common thyroid symptoms, but rather a specific and rare type of thyroid cancer called Medullary Thyroid Cancer (MTC)
The modified Tyrodes solution contained in millimolar concentrations (mM): 119.8 NaCI, 5.4 KCI, 1.8 CaCl 2 , 1.05 MgCl 2 , 0.42 NaH 2 PO 4 , 22.6 NaHCO 3 , 0.05 Na 2 EDTA, 0.28 ascorbic acid, and 5.05 glucose
Here, homocysteine is converted to the amino acid cysteine via two vitamin B 6 (PLP)-dependent enzymes: Cystathionine -synthase catalyzes the condensation of homocysteine with serine to form cystathionine, and then converted by cystathionine -lyase into cysteine, -ketobutyrate, and ammonia
Improved Sleep and Circadium Rhythm: Epithalon (a synthetic peptide) and Epithalamin (a pineal gland extract) significantly improve sleep in older adults by restoring melatonin production
However, your diet is not the only factor determining vitamin B12 absorption