Chronic Mountain Sickness Support Protocol
Primary Stack
Core supplements with strongest evidenceParadoxically, iron deficiency can worsen CMS symptoms; however, iron repletion must be carefully balanced as excess worsens polycythemia
Supporting Studies (1)
Supports bone health and immune function; deficiency common at altitude with reduced sun exposure; may support cardiovascular health
Supporting Studies (1)
Supporting Stack
Additional supplements for enhanced resultsMay improve blood rheology (flow properties); anti-inflammatory effects
Supporting Studies (1)
Antioxidant; may protect against oxidative stress from hypoxia
Supporting Studies (1)
Supports cellular energy production under hypoxic conditions
Supporting Studies (1)
Dietary nitrates may improve oxygen efficiency; studied at altitude for exercise performance
Supporting Studies (1)
Improves microcirculation; has been studied for altitude-related symptoms
Supporting Studies (1)
Combination of vitamins C, E, selenium to protect against hypoxia-induced oxidative stress
Supporting Studies (1)
May improve blood flow and oxygen delivery; traditionally used at altitude in some cultures
Supporting Studies (1)
How This Protocol Works
Simple Explanation
Chronic Mountain Sickness (CMS), also called Monge's disease, is a condition that affects people living at high altitudes (typically above 2,500-3,000 meters/8,000-10,000 feet) for extended periods. Unlike acute mountain sickness (which happens quickly at altitude), CMS develops over months to years and is characterized by excessive red blood cell production (polycythemia) as the body tries to compensate for low oxygen.
SYMPTOMS of CMS include:
CRITICAL: CMS is a serious condition that can lead to pulmonary hypertension, heart failure, and stroke. Medical management is essential.
PRIMARY TREATMENT:
RISK FACTORS:
* Iron status is complex in CMS. Iron deficiency can worsen symptoms, but iron excess fuels red blood cell overproduction. Normal iron stores are the goal.
* Antioxidants (Vitamins C, E, CoQ10) may help with oxidative stress from chronic hypoxia.
* Omega-3 Fatty Acids may improve blood flow properties.
Expected timeline: CMS symptoms improve within days to weeks of descending to lower altitude. If descent is not possible, medical management and supplements may provide some support.
Clinical Perspective
Chronic Mountain Sickness (Monge's Disease): Syndrome of excessive erythrocytosis in high-altitude residents. Diagnosis: Qinghai score (symptoms + Hgb; men >21 g/dL, women >19 g/dL). Pathophysiology: blunted ventilatory response to hypoxia, severe hypoxemia especially during sleep, consequent excessive erythropoiesis. Prevalence: 5-18% of high-altitude populations. Complications: pulmonary hypertension, cor pulmonale, thromboembolism, stroke.
CRITICAL: Primary treatment is descent to lower altitude - resolves syndrome. If descent impossible: supplemental oxygen (especially nocturnal), phlebotomy (target Hct <60%), acetazolamide 250mg BID (improves ventilation, reduces erythrocytosis). Treat contributing factors (OSA, COPD). Supplements have LIMITED evidence in CMS specifically.
* Iron (B-grade): Complex relationship. Review: (PMID: 28252380). Deficiency worsens symptoms; excess fuels polycythemia. Maintain normal ferritin (20-100).
* Vitamin D (C-grade): Often low at altitude. Review: (PMID: 28750270). 2000-4000 IU daily.
* Omega-3 Fatty Acids (C-grade): Blood rheology. Review: (PMID: 27840029). 2-3g EPA+DHA daily.
* Vitamin E (C-grade): Antioxidant; hypoxic stress. Review: (PMID: 27918887). 400 IU daily.
* CoQ10 (C-grade): Cellular energy. Review: (PMID: 26597398). 100-200mg daily.
* Beetroot Juice (C-grade): Nitrate; oxygen efficiency. Review: (PMID: 28940661). 500ml daily. May help exercise capacity.
* Ginkgo Biloba (C-grade): Microcirculation. Review: (PMID: 24679190). 120-240mg daily.
* Antioxidant Complex (C-grade): Oxidative stress. Review: (PMID: 23075608). Daily.
* Garlic (C-grade): Circulation. Review: (PMID: 26182896). 600-1200mg daily.
Assessment targets: Hemoglobin/hematocrit, oxygen saturation (awake and asleep), Qinghai CMS score, pulmonary artery pressure (echo), exercise capacity, sleep study.
Protocol notes: Phlebotomy: most effective intervention besides descent; 400-500mL every 2-4 weeks targeting Hct <60%; improves symptoms quickly. Iron management: don't supplement unless truly deficient; phlebotomy-induced deficiency should not be corrected aggressively. Acetazolamide: carbonic anhydrase inhibitor; improves ventilation and reduces erythropoietin; 250mg BID; watch for sulfa allergy, hypokalemia. Sleep apnea: common comorbidity; CPAP or oxygen at night may help. Altitude limits: consider relocation to lower altitude if severe; often impractical for economic/social reasons. Obesity: weight loss improves ventilation. COPD/pulmonary disease: exacerbates CMS; aggressive treatment. Dehydration: avoid - increases blood viscosity. Alcohol: avoid - worsens hypoxemia during sleep. Exercise: regular moderate exercise may help; avoid overexertion. Traditional remedies: coca leaves used in Andean populations - limited scientific study.