营销话术证据 A · 指南级
味精 (MSG) 有毒 (中餐馆综合征)
真相
源于 1968 年一封无对照来信; Geha 2000 双盲挑战仅 2.3% 反应且不可复现; 谷氨酸与番茄、母乳中的同一分子, 正常餐食剂量安全。
机制速览
Kwok 那封信之后, 研究者花了几十年用双盲、安慰剂对照试验来检验MSG 致症的说法。结论是一致的:
来源（2）
- Geha, R. S., Beiser, A., Ren, C., et al. (2000). Review of alleged reaction to monosodium glutamate and outcome of a multicenter double-blind placebo-controlled study. Journal of Nutrition, 130(4S Suppl), 1058S-1062S. Double-blind placebo-controlled challenges failed to reliably reproduce MSG symptoms at dietary doses.
- Raiten, D. J., Talbot, J. M., & Fisher, K. D. (Eds.). (1995). Analysis of adverse reactions to monosodium glutamate (MSG), report prepared by FASEB for the U.S. FDA. Journal of Nutrition, 125(11), 2891S-2906S. Concluded MSG is generally safe at normal dietary intake.