Why Do Athletes Often Lack Micronutrients?
Athletes have a higher micronutrient requirement for several reasons, and deficiency is one of the most common reasons why athletic performance does not improve:
💦 Sweat Losses
With sweat, an athlete loses 2-6x more minerals than a sedentary person. Zinc losses through sweat can reach 1-2 mg/hour, magnesium — 10-20 mg/hour.
🔥 Increased Metabolic Turnover
Intensive training increases the need for B-group vitamins because they participate in energy production. An athlete needs 2-3x more B1, B2, B6.
🩸 Increased Iron Requirement
Runners' "foot strike" hemolysis (breakdown of red blood cells from impact against the ground) + sweating + menstruation (for women) = 70-100% higher iron requirement.
🍽️ Restricted Diets
Athletes who restrict calories, food groups, or eat a monotonous diet are at risk of micronutrient deficiency. For vegans, B12, iron, and zinc are especially relevant.
📊 Key Micronutrient Tests and Optimal Levels
| Micronutrient | Test | Optimal Level for Athletes | Deficiency Symptoms | How to Correct |
|---|---|---|---|---|
| 🩸 Iron | Ferritin + serum Fe + TIBC | Ferritin 50-150 ng/mL | Fatigue, shortness of breath, reduced endurance | Iron bisglycinate + vit. C |
| 🧂 Magnesium | Erythrocyte Mg (not serum!) | 5.5-7.0 mg/dL | Cramps, insomnia, anxiety | Mg glycinate 300-400mg before sleep |
| 🔧 Zinc | Serum Zn + alkaline phosphatase | 80-120 μg/dL | Slow recovery, acne, frequent infections | Zn picolinate 25-50mg/day. |
| 💪 Selenium | Serum Se + GPx activity | 120-180 μg/L | Reduced thyroid function | Se-methionine 100-200μg/day. |
| ☀️ Vitamin D | 25-OH vitamin D | 50-80 ng/mL | Weakened immunity, poor mood | D3 2000-5000 IU/day + K2 |
| 🧠 Vitamin B12 | Serum B12 + methylmalonic acid | 500-900 pg/mL | Fatigue, numbness, memory | Methylcobalamin 1000-2000μg/day. |
| 🩸 Folic Acid (B9) | Serum folic acid | >10 ng/mL | Anemia, fatigue, depression | Methylfolate 400-800μg/day. |
| ⚡ Iodine | Urinary iodine | 100-200 μg/L | Hypothyroidism (sluggish thyroid) | Iodized salt, seaweed |
⚠️ When Are Micronutrient Tests Worth Doing?
Not everyone needs to rush to test all micronutrients right away. Here are the main indications:
- Unexplained fatigue — lasts >For 2 weeks, does not go away after rest days.
- Sports Performance Stagnation — despite a good training program and nutrition.
- Frequent infections — you get sick more often than 3-4 times per year.
- Changing Your Diet — you have switched to veganism/vegetarianism, elimination diets.
- Planning Pregnancy — female athletes must check Fe, folic acid, D, B12.
- After an Intense Season — 1-2x per year prophylactically, as part of a sports medical check-up.
🛒 Recommended Supplements
Choose quality supplements to achieve your goals:
🔗 Related Tools
🔬 Why Is This Especially Important for Athletes?
Athletes have unique physiological needs that make this topic even more relevant:
- Increased metabolism: Intense training accelerates the metabolism of many substances, so athletes need to pay more attention to recovery and balance.
- Oxidative stress: Physical load increases free radical production — athletes’ antioxidant needs are 2-3 times higher.
- Hormonal fluctuations: Intense training affects the balance of cortisol, testosterone, and growth hormone — nutrition can help balance these changes.
- Immune System "Window": After intense training, an "immune window" opens for 3-72 hours, during which the body is more susceptible to infections.
🏅 Recommendations by Sports Level
Athletes of different levels require a different approach:
🟢 Beginners (1-2 years)
Focus on the basics: balanced nutrition, sufficient protein intake, vegetables at every meal. Do not rush with complex strategies — first learn the basic habits.
🟡 Intermediate (2-5 Years)
Start experimenting with meal timing and macro periodization. Monitor how your body responds to different carbohydrate amounts before/after workouts.
🔴 Advanced / Elite (5+ Years)
Individualize everything: blood tests every 3-6 months, DEXA scans, sports dietitian consultations. Small details can provide a decisive 1-2% advantage.
🛒 Additional Products for Your Goals
In addition to the main supplements, these products can help you achieve better results:
🧠 Myths and Truth
Let's separate facts from popular myths: