Taos Toxins: Altitude Lies Brewing B12 Harm?

By Franklin Everett Shaw

May 6, 2026

The crisp mountain air of Taos, New Mexico, is invigorating, but it can also mask a silent threat: Vitamin B12 deficiency. Many residents dismiss fatigue or tingling as just the altitude, overlooking a potentially serious health issue. This isn’t just about feeling a bit off; B12 is crucial for nerve function, red blood cell production, and DNA synthesis.

Living in Taos presents unique challenges to B12 levels. The high altitude can increase the body’s demand for B12, while dietary habits, often lacking in animal products, further contribute to the problem. Let’s cut through the confusion and provide a clear path to understanding and addressing B12 deficiency in Taos.

First, recognize the subtle signs. Don’t just brush off that persistent fatigue as “Taos tiredness.” Look for other symptoms like:

Numbness or tingling in your hands and feet: This is a classic sign of nerve damage due to B12 deficiency.
Muscle weakness: Feeling unusually weak, even after rest.
Difficulty walking: Unsteadiness or balance problems.
Memory problems: Confusion, difficulty concentrating, or memory loss.
Depression or irritability: Mood changes can be linked to B12 levels.
A smooth, red tongue: This is a less common, but distinctive sign.

These symptoms can easily be attributed to other causes, making B12 deficiency a sneaky culprit. The altitude in Taos (around 7,000 feet) can exacerbate these symptoms, making it even harder to pinpoint the real issue.

Now, let’s talk about diet. Taos, while embracing a vibrant culinary scene, also has a strong tradition of vegetarian and vegan diets. While these diets offer many health benefits, they can be naturally low in B12, which is primarily found in animal products like meat, poultry, fish, eggs, and dairy. Even those who consume animal products may not be absorbing B12 properly due to factors like age or certain medical conditions.

Here’s a step-by-step protocol to boost your B12 levels, tailored for the Taos environment:

Dietary Adjustments: Prioritize B12-rich foods. If you eat animal products, include them regularly in your diet. Think grass-fed beef from local ranchers, eggs from Taos chickens, or sustainably sourced fish. If you’re vegetarian or vegan, focus on fortified foods like nutritional yeast, plant-based milks, and breakfast cereals. Read labels carefully to ensure they contain B12.
Supplementation: This is crucial, especially at high altitude. Don’t rely solely on diet. Start with a high-quality B12 supplement. Methylcobalamin is generally considered the most bioavailable form. Look for a dosage of at least 1000 mcg per day. Sublingual (under the tongue) tablets or lozenges are absorbed directly into the bloodstream, bypassing potential absorption issues in the gut.
Optimize Absorption: This is where many people fail. B12 absorption requires intrinsic factor, a protein produced in the stomach. Certain conditions, like atrophic gastritis (common in older adults) or the use of proton pump inhibitors (PPIs) for heartburn, can impair intrinsic factor production. To enhance absorption:
- Take your B12 supplement on an empty stomach, ideally first thing in the morning.
- Consider supplementing with digestive enzymes to aid in breaking down food and releasing B12.
- If you’re taking PPIs, talk to your doctor about alternative treatments or strategies to minimize their impact on B12 absorption.
Monitor Your Progress: Keep a journal of your symptoms and energy levels. Note any improvements or lack thereof after a few weeks of implementing these changes. This will help you gauge the effectiveness of your strategy.
When to Seek a Blood Test: If your symptoms persist despite dietary changes and supplementation, or if you have risk factors for B12 deficiency (e.g., age over 50, vegetarian/vegan diet, history of digestive issues), it’s time to get a blood test.
- Schedule an appointment with your doctor in Taos. Quest Diagnostics and TriCore Reference Laboratories both have locations in or near Taos and are commonly used for blood testing.
- Ask for a serum B12 test. This measures the amount of B12 in your blood.
- Consider asking for a methylmalonic acid (MMA) test. This is a more sensitive indicator of B12 deficiency, as it measures a substance that builds up when B12 is low.
- A homocysteine test can also be helpful, as elevated homocysteine levels can indicate B12 deficiency.
Interpreting Your Results: Normal B12 ranges vary slightly between labs, but generally, a level below 200 pg/mL is considered deficient. However, some experts believe that levels between 200-350 pg/mL may indicate a functional deficiency, meaning that B12 is not being properly utilized by the body. Discuss your results with your doctor to determine the best course of action.

Common pitfalls and how to avoid them:

Assuming a multivitamin is enough: Many multivitamins contain only a small amount of B12, which may not be sufficient to correct a deficiency, especially at high altitude. Opt for a dedicated B12 supplement.
Not considering absorption issues: Simply taking a B12 supplement isn’t enough if you’re not absorbing it properly. Address potential underlying causes like low stomach acid or intrinsic factor deficiency.
Ignoring persistent symptoms: Don’t dismiss ongoing fatigue or neurological symptoms as “just the altitude.” Be proactive and investigate potential B12 deficiency.
Self-treating without consulting a doctor: While supplementation is generally safe, it’s important to consult with your doctor, especially if you have underlying medical conditions or are taking medications. They can help you determine the appropriate dosage and monitor your progress.

Living in Taos offers a unique lifestyle, but it also requires awareness of potential health challenges. By understanding the signs of B12 deficiency, optimizing your diet and supplementation, and seeking timely medical evaluation, you can ensure that you’re thriving, not just surviving, in the high desert. Don’t let B12 deficiency steal your energy and vitality. Take control of your health and enjoy all that Taos has to offer.