肌酸,一个听起来很“健身房”的东西。我自己吃了快半年以后,最近又把 The Diary of a CEO 对肌酸成分的研究者 Dr. Darren Candow 的访谈反复听了两三遍,才发现这勺不起眼的“白粉”,能聊的早就超出了“长肌肉”。
女生吃了会水肿、显胖吗?会伤肾、掉头发吗?如果训练量很少,光吃还有没有用?更让我意外的是,为什么最近几年连睡眠不足、脑力透支、认知表现和 healthy aging 的研究里,也越来越常看到肌酸?
这期从几个流传很久的迷思开始,把肌酸在肌肉、骨骼和大脑里的几笔账慢慢算清楚。有些证据已经重复验证很多年,有些听起来很诱人的新发现,还得再等等更多研究。
最后再回到最实际的问题:吃多少?要不要 loading?什么时候吃?一水肌酸怎么选?以及很重要的一盆冷水:补剂可以加分,力量训练、蛋白质、运动和睡眠这些基本功,谁也替不了。
⏱ 时间轴
00:02| 做过6年保健品以后,我为什么越来越相信“老成分+重复验证”
01:48| 伤肾、水肿、脱发、抽筋、只适合男性?先拆肌酸的5口大锅
07:38| ATP快没电时,肌酸到底怎么帮身体“续一格”?
10:54| 增肌这笔账:每天3–5克,能多得到多少力量和训练收益?
14:15| 我的半年实测:训练量一掉,肌酸也救不了基本功
15:01| 女性值得单独听:肌酸真的能帮到骨骼吗?
17:55| 最反常识的一笔账:熬夜、倒时差、脑力透支,大脑也研究肌酸?
20:05| “消脑雾”靠谱吗?疲惫的大脑可能得到的究竟是什么
23:58| 一水肌酸、loading、服用时间:怎么买、怎么吃一次讲清
28:54| 蛋白质、孕期、青少年和既往病史:哪些情况值得更谨慎?
32:15| 给肌酸降降温:健康工具箱里,它其实排在第几位?
35:47| 所谓抗衰,我更在意的是身体下坡的速度能不能慢一点
📚 本期引用
🔎 播客录音校正说明
以下几处依据论文原文核对后,以本页 Shownotes 为准:
关于骨骼研究年份:本集播客中提到“2024–2025年的系统综述”,对应的最新系统综述与荟萃分析实际发表于 2026年,纳入7项随机对照试验、608名绝经后女性。结果支持肌酸配合抗阻训练对瘦体重和力量存在小幅获益,对骨密度的整体效果仍不明确。
关于睡眠剥夺时的大脑剂量:录音为了方便理解简化成“一次约30克”。Gordji-Nejad等人的2024年实验实际按照体重给予 0.35 g/kg 单次高剂量肌酸,并在约21小时睡眠剥夺环境下测试认知和脑能量代谢。节目里提到的日常10克、压力期15–20克等方案主要来自Dr. Candow在访谈中的讨论,目前还不能视作统一的临床脑健康补充指南。
关于抑郁与饮食肌酸调查:录音中提到“20多万人”,实际研究样本为 22,692名美国成年人。研究发现较高的饮食肌酸摄入与较低的抑郁患病率相关,这属于观察性关联,无法单独证明因果。
关于肾功能:录音中“约99%是假阳性”来自访谈嘉宾的经验性表达,目前没有找到能够对应这一具体比例的发表数据。更准确的证据是:肌酸补充可能让血清肌酐出现小幅升高,从而影响依赖肌酐估算的eGFR,但系统综述没有发现相应的GFR损害信号。
关于阿尔茨海默病研究:节目里提到的脑内肌酸、认知表现和握力来自同一批患者的两篇单臂pilot研究。20名患者接受20 g/day、8周肌酸补充后出现了一些值得继续研究的信号,但研究没有安慰剂对照组,目前不足以得出肌酸可以治疗阿尔茨海默病的结论。
核心资料与论文
The Diary of a CEO|Anti-Aging Expert: Creatine Is The Fat Loss Secret Doctors Don't Tell You – Dr. Darren Candow.
Australian Institute of Sport (AIS)|Creatine (Creatine Monohydrate). 关于一水肌酸、loading、3–5 g/day维持剂量、运动表现及安全性的实用资料。
Kreider RB, et al. (2017). International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation in exercise, sport, and medicine. Journal of the International Society of Sports Nutrition, 14:18. DOI: 10.1186/s12970-017-0173-z. PMID: 28615996.
Antonio J, et al. (2021). Common questions and misconceptions about creatine supplementation: what does the scientific evidence really show? Journal of the International Society of Sports Nutrition. DOI: 10.1186/s12970-021-00412-w. PMID: 33557850.
Kreider RB, et al. (2025). Safety of creatine supplementation: analysis of the prevalence of reported side effects in clinical trials and adverse event reports. Journal of the International Society of Sports Nutrition, 22(sup1):2488937. DOI: 10.1080/15502783.2025.2488937. PMID: 40198156.
Harris RC, Söderlund K, Hultman E. (1992). Elevation of creatine in resting and exercised muscle of normal subjects by creatine supplementation. Clinical Science, 83(3):367–374. DOI: 10.1042/cs0830367. PMID: 1327657.
Hultman E, et al. (1996). Muscle creatine loading in men. Journal of Applied Physiology, 81(1):232–237. DOI: 10.1152/jappl.1996.81.1.232. PMID: 8828669.
Lak M, et al. (2025). Does creatine cause hair loss? A 12-week randomized controlled trial. Journal of the International Society of Sports Nutrition, 22(sup1):2495229. DOI: 10.1080/15502783.2025.2495229. PMID: 40265319.
Aguiar Bonfim Cruz AJ, et al. (2024). Creatine Improves Total Sleep Duration Following Resistance Training Days versus Non-Resistance Training Days among Naturally Menstruating Females. Nutrients, 16(16):2772. DOI: 10.3390/nu16162772. PMID: 39203908.
Chilibeck PD, et al. (2023). A 2-yr Randomized Controlled Trial on Creatine Supplementation and Exercise for Bone Health in Postmenopausal Women. Medicine & Science in Sports & Exercise. PMID: 37144634.
Naddafha S, et al. (2026). Creatine monohydrate for lean mass, strength, and bone density in postmenopausal women: a systematic review and meta-analysis. Journal of the International Society of Sports Nutrition. PMID: 42141930.
Smith-Ryan AE, et al. (2025). Creatine in women's health: bridging the gap from menstruation through pregnancy to menopause. Journal of the International Society of Sports Nutrition, 22(1):2502094. DOI: 10.1080/15502783.2025.2502094. PMID: 40371844.
Gordji-Nejad A, et al. (2024). Single dose creatine improves cognitive performance and induces changes in cerebral high energy phosphates during sleep deprivation. Scientific Reports, 14:4937. DOI: 10.1038/s41598-024-54249-9. PMID: 38418482.
Van Cutsem J, et al. (2020). Can Creatine Combat the Mental Fatigue-associated Decrease in Visuomotor Skills? Medicine & Science in Sports & Exercise, 52(1):120–130. DOI: 10.1249/MSS.0000000000002122. PMID: 31403610.
Smith AN, et al. (2025). Creatine monohydrate pilot in Alzheimer's: Feasibility, brain creatine, and cognition. Alzheimer's & Dementia: Translational Research & Clinical Interventions, 11:e70101. DOI: 10.1002/trc2.70101. PMID: 40395689.
Smith AN, et al. (2025). Eight weeks of creatine monohydrate supplementation is associated with increased muscle strength and size in Alzheimer's disease: data from a single-arm pilot study. Frontiers in Nutrition, 12:1670641. DOI: 10.3389/fnut.2025.1670641. PMID: 40977987.
Lyoo IK, et al. (2012). A randomized, double-blind placebo-controlled trial of oral creatine monohydrate augmentation for enhanced response to a selective serotonin reuptake inhibitor in women with major depressive disorder. American Journal of Psychiatry. PMID: 22864465.
Eckert I, Lima J, Dariva AA. (2025). Creatine supplementation for treating symptoms of depression: a systematic review and meta-analysis. British Journal of Nutrition, 134(11):947–959. DOI: 10.1017/S0007114525105588. PMID: 41189312. 该综述纳入11项试验、1093名参与者,平均效应未达到作者设定的临床重要性阈值,证据确定性很低。
Bakian AV, et al. (2020). Dietary creatine intake and depression risk among U.S. adults. Translational Psychiatry, 10:52. DOI: 10.1038/s41398-020-0741-x. PMID: 32066709.
Jagim AR, Kerksick CM. (2021). Creatine Supplementation in Children and Adolescents. Nutrients, 13(2):664. DOI: 10.3390/nu13020664. PMID: 33670822. 青少年相关研究数量与长期数据仍远少于成人,因此节目中保留“特殊人群先咨询专业人士”的谨慎原则。
Brosnan JT, da Silva RP, Brosnan ME. (2011). The metabolic burden of creatine synthesis. Amino Acids. PMID: 21387089. 用于校正节目里关于肌酸与甲基消耗方向的表述。
Braissant O, et al. (2007). Expression and function of AGAT, GAMT and CT1 in the mammalian brain. 用于补充肌酸在肾脏、肝脏、胰腺及脑内合成与转运的相关机制。PMID: 18652072.
本期内容是对公开研究、专家访谈与个人使用经历的整理,不构成个体医疗建议。涉及既往肾脏疾病、其他明确病史、正在服药,以及孕期、哺乳期、儿童青少年等特殊情况,补充前建议和医生或合规营养专业人士确认。
🎵 配乐
Lukrembo - affogato
🎙 主播
小红书/抖音:@Sally囡囡
🛸 收听平台
小宇宙|Apple Podcast
📮 邮箱
nannan.alittleoff@gmail.com
