Table of Contents
Why is quercetin bad for thyroid?
Indeed, quercetin inhibits iodide organification through a thiourea-like action inhibiting thyroid peroxidase (TPO) enzyme activity and interferes with thyroid hormone metabolism, particularly through the inhibition of type I 5′-deiodinase activity [8].
Which vitamin is not good for thyroid?
Low levels of vitamin D have also been associated with thyroid disease, such as Hashimoto’s thyroiditis. Similarly, patients with new-onset Graves’ disease were found to have decreased 25-hydroxyvitamin D concentrations.
What supplements can interfere with a thyroid test?
Biotin supplements, for example, can interfere with thyroid function tests by showing falsely low TSH levels. The ATA recommends you stop taking biotin for at least two days before a thyroid test to avoid misleading results.
What are the side effects of taking quercetin?
Common side effects of quercetin include:
- Headache (oral use)
- Numbness and tingling (oral use)
- Shortness of breath (intravenous use)
- Nausea and vomiting (intravenous use)
- Kidney damage (intravenous use greater than 945 mg/m2)
Can zinc deficiency affect thyroid?
Zinc and other trace elements such as copper and selenium are required for the synthesis of thyroid hormones, and deficiency of these can result in hypothyroidism. Conversely, thyroid hormones are essential for the absorption of zinc, and hence hypothyroidism can result in acquired zinc deficiency.
Can quercetin cause hypothyroidism?
However, concerns have been raised about the potential toxic effects of excessive intake of quercetin, and several studies have demonstrated that flavonoids, included quercetin, can interfere with thyroid function. In a previous report, we showed that quercetin inhibits thyroid-cell growth and iodide uptake.
Does quercetin make you gain weight?
This means that, while reducing inflammation, quercetin helps to efficiently burn sugar and fats to curb weight gain. Yet another important study showed that quercetin has a direct anti-obesity effect.