Post-Thyroid Surgery: Concerns About Iodine Intake from Protein Powder

Post-thyroidectomy Iodine Intake Issues

Hello Doctor: A few years ago, I underwent a total thyroidectomy due to papillary thyroid carcinoma, and recently I had another surgery due to parathyroid adenoma.
Therefore, I purchased high-protein milk powder to supplement my nutrition.
The packaging suggests taking 1 cup in the morning and 1 cup in the evening (a total of about 48 grams), but the nutrition label indicates that each serving of 24 grams contains 28.8 micrograms of iodine.
If I consume 2 cups daily, I am concerned about the potential for excessive iodine intake.
Can I consume this long-term? Thank you for your response.

fen, 60~69 year old female. Ask Date: 2024/03/01

Dr. Yuan Tianmin reply Breast and Thyroid

Are these postoperative supplements sufficient? Your needs may only be determined through a blood test, so you might want to get a blood test first to see if the current intake is adequate.

Reply Date: 2024/03/01

More Info

After undergoing a total thyroidectomy due to papillary thyroid cancer, it is crucial to monitor your iodine intake, especially when considering dietary supplements such as protein powder. The concern arises from the fact that iodine plays a significant role in thyroid hormone production, and after the removal of the thyroid gland, your body no longer has a natural source of this hormone. Therefore, understanding your iodine intake is essential for maintaining your overall health.

In your case, the protein powder you mentioned contains 28.8 micrograms of iodine per serving, and if you consume two servings daily, that totals approximately 57.6 micrograms of iodine. The recommended daily intake of iodine for adults is about 150 micrograms, according to the World Health Organization. Therefore, your intake from the protein powder alone is below the daily recommended amount. However, it is important to consider any additional sources of iodine in your diet, such as iodized salt, seafood, dairy products, and certain medications that may contain iodine.

Given your history of thyroid cancer and the subsequent surgeries, it is advisable to consult with your healthcare provider or a registered dietitian before making any significant changes to your diet or supplement regimen. They can help assess your overall iodine intake and determine if your current protein powder consumption is appropriate for your specific health needs.
Long-term consumption of protein powder containing iodine is generally acceptable, provided that your total iodine intake remains within safe limits. However, regular monitoring of your thyroid function is essential, especially after thyroid surgery. Blood tests measuring thyroid-stimulating hormone (TSH) and thyroglobulin levels can help ensure that your body is managing hormone levels effectively.
Additionally, if you experience any symptoms such as fatigue, weight changes, or mood swings, these could indicate an imbalance in your thyroid hormone levels, necessitating further evaluation. It is also worth noting that excessive iodine intake can lead to thyroid dysfunction, including hypothyroidism or hyperthyroidism, so it is crucial to strike a balance.

In summary, while the iodine content in your protein powder appears to be within a safe range, it is essential to consider your total iodine intake from all sources. Regular follow-ups with your healthcare provider will help ensure that your thyroid hormone levels remain stable and that your dietary choices support your overall health post-surgery.

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