铁 用于 休止期脱发
B 证据 至少一项随机试验支持这一结论,结果基本一致。基于56项研究(2项RCT),共11,067名参与者。各研究结果不一。
结论
Iron may support recovery from telogen effluvium, particularly when low ferritin levels are confirmed, but the evidence is mixed and routine supplementation without testing is not well-supported.
- 56 studies provide substantial evidence, though results are mixed across the research
- Lower ferritin levels are commonly found in patients with telogen effluvium
- One study found iron supplementation improved satisfaction even in patients without overtly low ferritin
- Blood testing for ferritin and iron levels is recommended before starting supplementation
Key Study Findings
研究人群: women with androgenetic alopecia (female pattern hair loss)
Key Statistics
62
研究数量
11072
受试者
Mixed
等级
Referenced Papers
Dosage & Usage
mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units
常用剂量
- general:
- 18 mg/day (women)
- deficiency:
- 65-200 mg elemental iron/day
上限: 45 mg/day
研究中使用的剂量
| 剂量 | 持续时间 | 效果 | N |
|---|---|---|---|
| None | -- | Neutral | -- |
| variable; exosomes predominantly from mesenchymal stem cells (MSCs) | -- | Positive | 16 |
| None | -- | Mixed | -- |
| None | -- | Neutral | 2851 |
| Various microtrauma procedures: microneedling, fractional/non-fractional lasers, contact immunothera | -- | Positive | -- |
| None | -- | Positive | -- |
| not applicable (observational; serum ferritin measured) | -- | Negative | 100 |
| None | -- | Mixed | -- |
最佳服用时间: On an empty stomach with vitamin C for best absorption; take 2 hours apart from calcium
Safety & Side Effects
已报告的副作用
- ⚠ Constipation (most common)
- ⚠ Nausea and stomach cramps
- ⚠ Dark or black stools
- ⚠ Iron overload with excessive supplementation (hemochromatosis risk)
已知相互作用
- ● Calcium supplements and dairy (reduce iron absorption by 50-60%)
- ● Proton pump inhibitors (omeprazole) and H2 blockers reduce absorption
- ● Tetracycline and quinolone antibiotics (mutual absorption reduction)
- ● Levothyroxine (iron reduces thyroid hormone absorption)
可耐受最高摄入量: 45 mg/day
在开始服用任何补充剂之前,请务必咨询您的医疗保健提供者。
Frequently Asked Questions
Does 铁 help with 休止期脱发?
How much 铁 should I take for 休止期脱发?
Are there side effects of 铁?
How strong is the evidence for 铁 and 休止期脱发?
Related Evidence
其他成分用于 休止期脱发
References
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