Main Scenarios Requiring Extra Supplementation
1. Long-term Insufficient Dietary Intake
| Nutrient | Recommendation |
|---|---|
| Calcium: Chinese per capita intake only 366-415mg/d, needs to reach 800-1000mg; daily 300ml milk can supplement approximately 300mg | |
| Vitamin D: High-latitude northern residents, long-term indoor workers, elderly need extra supplementation 600-1000IU/d | |
| Iron: Women of childbearing age, pregnant women high-risk groups, recommend amino acid chelated iron | |
| B12: Vegetarians, elderly, sublingual absorption is better | |
| Omega-3: For those with insufficient seafood intake, recommend high-purity EPA/DHA preparation |
2. Specific Disease Risks
- Vitamin D deficiency: When serum 25(OH)D<20ng/ml, need extra supplementation 1000-2000IU/d
- Iron deficiency anemia: When serum ferritin<30μg/L, supplement elemental iron 30-120mg/d
- Osteoporosis: Postmenopausal women, extra calcium 500-1000mg/d + vitamin D 800-1000IU/d
- High homocysteine: Supplement folate 400-800μg + B6 + B12
3. Specific Physiological Stages
- Pregnancy/lactation: Folate 400μg/d, iron 27mg/d, calcium 1000-1200mg/d, DHA 200mg/d
- Elderly: Vitamin D 600-800IU/d, B12 2.4μg/d, protein 1.0-1.2g/kg body weight
4. Specific Dietary Patterns
- Vegans: Must supplement B12 (25-100μg/d), pair with vitamin C to promote iron absorption
- Dieting for weight loss: Pay attention to B vitamins, zinc, selenium, DHA+EPA supplementation
- Insufficient sunlight: Supplement 10-25μg vitamin D daily
5. Drug Interactions
| Drug | Nutrient Impact | Supplementation Recommendation |
|---|---|---|
| Metformin | Reduces B12 absorption | Supplement B12 1000μg daily |
| Statins | Inhibits coenzyme Q10 synthesis | Supplement Q10 100-200mg |
| Diuretics | Potassium, magnesium loss | Monitor and supplement electrolytes |
| Antiepileptic drugs | Affect folate metabolism | Supplement folate 0.4-1mg/d |
6. Chronic Disease Patient Supplementation Strategies
- Cardiovascular disease: Omega-3 1g/d, coenzyme Q10
- Diabetes: B12 (especially those using metformin), vitamin D
- COPD: Vitamin D 800-2000IU/d, can reduce acute exacerbations by 30-40%
Precautions
- Regularly review nutritional status (recommend 3-6 months)
- Single nutrient does not exceed UL (tolerable upper intake level)
- Multiple supplements pay attention to ingredient stacking
- Taking with meals improves fat-soluble vitamin absorption by 30-50%
- Special populations (pregnant women, chronic disease patients) need to follow doctor’s advice