Many drugs can damage the thyroid, including amiodarone, lithium, immune checkpoint inhibitors, and certain cancer drugs (like sunitinib), causing either underactive (hypothyroidism) or overactive (hyperthyroidism) thyroid function by interfering with hormone production or release, with common culprits being heart medications, psychotropics, and immunotherapies. High-dose steroids, some antiseizure meds, and even large amounts of iodine in supplements can also play a role, requiring regular thyroid monitoring.
A small subset of medications including glucocorticoids, dopamine agonists, somatostatin analogs and rexinoids affect thyroid function through suppression of TSH in the thyrotrope or hypothalamus.
Foods that may negatively impact your thyroid health
Goitrogens are found in cruciferous veggies like cabbage, cauliflower, bok choy, broccoli and soy. It is possible for goitrogens to impact thyroid health when eaten raw and in extremely large amounts and/or in those with an iodine deficiency.
Mild mucocutaneous bleeding (epistaxis, gum bleeding, menorrhagia, bruising) is frequently observed in overt hypothyroidism patients, mainly due to an acquired von Willebrand syndrome type 1 (32, 33).
In hypothyroidism, immune function may be weakened, increasing susceptibility to infections such as UTIs. Additionally, thyroid hormones regulate the body's metabolism and immune response, so when levels are off, they can affect the body's ability to fight off infections.
Thyroid hormones act on the gastrointestinal tract so an excess can cause more frequent bowel movements, including diarrhoea. Kidney function may also be affected, causing more frequent urination.
Both hypothyroidism and hyperthyroidism can cause sleep issues. In patients with hyperthyroidism, the nervousness and arousal associated with the condition can prevent patients from falling asleep normally. Increased perspiration caused by the condition can lead to night sweats, waking the patient during the night.
Daily habits such as irregular sleep, skipped meals, and stress can harm thyroid function. Improving your routine can offer significant relief and support hormonal recovery.
Common symptoms include:
In hypothyroidism, the time it takes for the skin cells to turn over increases. Because of this, your old cells stay on your skin longer. This will cause your skin to start feeling dry, rough, and scaly. You may start to notice wrinkles appearing or your skin starting to sag.
Hashimoto's disease is an autoimmune disorder. The immune system creates antibodies that attack thyroid cells as if they were bacteria, viruses or some other foreign body. The immune system wrongly enlists disease-fighting agents that damage cells and lead to cell death.
Biotin (vitamin B7)
We recommend you be aware that these mega doses of biotin can sometimes result in incorrect TSH, FT4 and FT3 levels and may give a reading that suggests an overactive thyroid (hyperthyroidism).
Cruciferous vegetables – Vegetables such as broccoli, cabbage, kale and Brussels sprouts can inhibit the production of thyroid hormone. This is especially common in those who have an iodine deficiency. Digesting these vegetables can block the ability to absorb iodine, which is needed for normal thyroid function.
The most common cause of hypothyroidism is an autoimmune disease called Hashimoto's disease. Autoimmune diseases happen when the immune system makes antibodies that attack healthy tissues. Sometimes that process involves the thyroid gland and affects its ability to make hormones.
Some medicines should not be taken at the same time of day as levothyroxine as they can reduce the amount of levothyroxine your body takes in, including:
Omeprazole decreases the absorption of your thyroid medication. If you need to be on a course of omeprazole while taking levothyroxine, your doctor may order more frequent laboratory testing to confirm you are absorbing enough levothyroxine.
Unfortunately, routine thyroid screening for people at average risk is not cost-effective and, therefore, many cases are undiagnosed until they have symptoms. The end-stage of Hashimoto's is when your thyroid has become so damaged that you no longer have enough thyroid hormones and have to go on medication.
On the other hand, it is important to remember that some berries and citrus fruits like strawberries and peaches contain goitrogens. Since it can interfere with the thyroid glands' iodine uptake, eating these fruits of a larger quality can lead to hyperthyroidism.
The short answer is probably not if the thyroid gland cells have been destroyed, but there are certain conditions that make it possible to salvage gland tissue and restore some thyroid gland function.
Thyroid hormone affects virtually every organ system in the body, including the heart, CNS, autonomic nervous system, bone, GI, and metabolism.
Stress as a Trigger for Autoimmune Thyroid Disorders
Most are triggered by a combination of genetic predisposition and environmental stressors. One potential trigger is emotional stress, which can elevate cortisol levels, weakening the immune system and increasing susceptibility in those already predisposed.
Circadian variation in thyroid-stimulating hormone (TSH) levels has been well described, with secretion partially pulsatile and partially basal. TSH concentrations are maximal overnight and lowest in the late afternoon to early evening.
Thyroid disease can cause multiple eye problems. These include redness and swelling, double vision, decreased vision, eyelid retraction (inability to close the eyes), and a bulging of the eye itself.
What You Can Do