From analyzing some people's test results, I realized that parasites have an indirect effect on thyroid function. Moreover, a rather interesting pattern emerges: a person may have a high TSH, indicating hypothyroidism, but no antibodies in TPO or TG. It's logical to assume there's an iodine deficiency; you start giving iodine, but the TSH doesn't drop, and there are still no antibodies. In this case, doctors give you a dose of levothyroxine and tell you to fuck off. But that's not my path.
You start to wonder what's stopping your thyroid hormones from performing their function. And you come to a rather unobvious answer: a chronic infection.
You open PubMed and case reports and voila, bingo:
Giardia lamblia (giardiasis) doi: 10.1055/s-0029-1211442.
We describe a case of isolated levothyroxine malabsorption associated with chronic intestinal giardiasis, leading to severe hypothyroidism. Giardia lamblia infection was histologically confirmed by small intestinal biopsy. Treatment with metronidazole resulted in complete elimination of the parasites and restoration of normal intestinal absorption of thyroid hormones. Stable euthyroidism was achieved with the use of conventional replacement doses of oral levothyroxine.
Blastocystis hominis (Blastocystosis) doi: 10.3855/jidc.4851
In this case report, we describe a 49-year-old man with chronic urticaria, angioedema, and soft stool. During diagnostic workup, Hashimoto's thyroiditis was discovered, although the patient had never had overt symptoms of this disease. Blastocystis hominis was isolated during stool microbiology, suggesting that this parasite can cause Hashimoto's thyroiditis and chronic urticaria. After two weeks of treatment with metronidazole, Blastocystis hominis was eradicated, and the urticaria and angioedema subsequently resolved. Over a four-year follow-up period, the patient remained asymptomatic, while thyroid hormone levels normalized and antithyroid antibody levels decreased.
There are other studies, too. I've given just a couple of examples. In this regard, I appeal to endocrinologists—always remember the triad of root causes of all diseases: genes, infections, and toxins. Your research and diagnosis should begin with this!
