**Taos Temps: Altitude Lies Crashing Thyroid Meds?**

By Franklin Everett Shaw

January 9, 2026

That persistent fatigue, the nagging weight gain, the brain fog that just won’t lift – could it be your thyroid? If you’re living in Taos, New Mexico, the answer might be more complex than you think.

The thin air of Taos, perched at over 7,000 feet, throws a unique wrench into the already delicate balance of thyroid hormone regulation. This isn’t just about feeling a little winded on a hike; it’s about how your body adapts to less oxygen, and how that adaptation impacts your thyroid.

Let’s dive into the specifics of how altitude affects thyroid function, and what you, as a resident of Taos, can do to optimize your thyroid health.

Living at high altitude forces your body to work harder to get enough oxygen. This triggers a cascade of physiological changes. One crucial adaptation is an increase in red blood cell production to carry more oxygen. This is driven by a hormone called erythropoietin (EPO).

But here’s the rub: this increased EPO and the overall stress on the body can impact thyroid hormone metabolism. Specifically, it can affect the conversion of T4 (the inactive form of thyroid hormone) to T3 (the active form).

Why is this important? T3 is the workhorse. It’s what your cells actually use. If your body isn’t efficiently converting T4 to T3, you can experience hypothyroid symptoms even if your T4 levels appear “normal” on a standard blood test.

Think of it like this: you have plenty of lumber (T4), but not enough carpenters (the enzymes that convert T4 to T3) to build the house (cellular function).

So, what are the specific challenges faced by Taos residents with thyroid issues?

• Reduced T4 to T3 Conversion: The stress of altitude can impair the enzymes responsible for this conversion, leading to lower active thyroid hormone levels.
• Increased Thyroid Hormone Demand: Your body might need more thyroid hormone at altitude to maintain normal function due to the increased metabolic demands of living in a low-oxygen environment.
• Difficulty in Diagnosis: Standard thyroid blood tests might not fully capture the impact of altitude on thyroid hormone metabolism, potentially leading to underdiagnosis or inadequate treatment.
• Medication Dosage Adjustments: The standard thyroid medication dosage that works at sea level might not be sufficient in Taos.

Now, let’s get practical. What can you do to navigate these challenges?

First, find an endocrinologist in New Mexico who understands altitude physiology. This is critical. Not all doctors are aware of the unique challenges faced by high-altitude residents. Look for someone who has experience treating patients in mountainous regions and is willing to consider the impact of altitude on your thyroid function.

Second, advocate for comprehensive thyroid testing. Don’t just settle for a TSH and T4 test. Ask for a full thyroid panel, including:

• TSH (Thyroid Stimulating Hormone)
• Free T4 (Free Thyroxine)
• Free T3 (Free Triiodothyronine)
• Reverse T3 (rT3)
• Thyroid Antibodies (TPO and TgAb)

Reverse T3 is particularly important. It’s an inactive form of T3 that can block T3 receptors, further hindering thyroid hormone action. Elevated rT3 can indicate that your body is under stress and not efficiently converting T4 to T3.

Third, consider T3 medication. Many doctors primarily prescribe T4-only medications like levothyroxine (Synthroid). While this works for some, it might not be sufficient if you have trouble converting T4 to T3. Talk to your doctor about adding or switching to a T3-containing medication like liothyronine (Cytomel) or a combination T4/T3 medication.

Fourth, optimize your lifestyle. This isn’t just generic advice; it’s about supporting your body’s ability to adapt to altitude and maintain healthy thyroid function.

• Iron: Ensure you have adequate iron levels. Iron is crucial for thyroid hormone production and conversion. Get your iron levels checked and consider supplementation if you’re deficient.
• Selenium: Selenium is essential for the enzymes that convert T4 to T3. Brazil nuts are a great source of selenium, but be mindful of overconsumption.
• Zinc: Zinc is another important mineral for thyroid function.
• Adaptogens: Consider adaptogenic herbs like ashwagandha and rhodiola. These herbs can help your body cope with stress and may support thyroid function. However, talk to your doctor before taking any new supplements, especially if you have other health conditions or are taking medications.
• Manage Stress: Chronic stress can impair thyroid function. Practice stress-reducing activities like yoga, meditation, or spending time in nature. Taos offers ample opportunities for outdoor recreation, which can be a great stress reliever.
• Diet: Focus on a whole-foods diet rich in nutrients that support thyroid function. Avoid processed foods, excessive sugar, and gluten if you have a sensitivity.
• Gradual Acclimatization: If you’re new to Taos, give your body time to adjust to the altitude. Avoid strenuous activity in the first few days and gradually increase your activity level.

Fifth, monitor your symptoms closely. Pay attention to how you feel. Are you still experiencing fatigue, weight gain, brain fog, or other hypothyroid symptoms despite being on medication? Keep a symptom journal and share it with your doctor. This can help them fine-tune your medication dosage and treatment plan.

Sixth, consider the impact of other medications. Certain medications can interfere with thyroid hormone absorption or conversion. Talk to your doctor about all the medications you’re taking, including over-the-counter drugs and supplements.

Seventh, be patient. Optimizing thyroid function at altitude can take time and experimentation. Don’t get discouraged if you don’t see results immediately. Work closely with your doctor to find the right medication and lifestyle adjustments that work for you.

A common pitfall is relying solely on TSH levels. TSH is a pituitary hormone, not a thyroid hormone. While it can be a useful screening tool, it doesn’t always accurately reflect thyroid hormone levels in the tissues. Focus on how you feel and advocate for comprehensive testing.

Another mistake is self-treating with thyroid hormones. This can be dangerous and can lead to hyperthyroidism or other health problems. Always work with a qualified healthcare professional.

Living in Taos offers a unique and rewarding lifestyle. But it also presents unique challenges to thyroid health. By understanding the impact of altitude on thyroid function and taking proactive steps to optimize your thyroid health, you can thrive in the Land of Enchantment. Remember, finding a knowledgeable endocrinologist is paramount. Don’t be afraid to seek a second opinion if you feel your concerns aren’t being adequately addressed. Your health is worth it.