I spent a few weeks researching MSG in-depth a year or three ago. Whenever I'm in truth-seeking mode, I have to overcome my 3 internal biases:
1. What do I hope for?
2. What am I afraid of?
3. What have I already pre-decided to be true?
Regarding MSG, I lived under the "Chinese Restaurant Syndrome" trope growing up. So that rings bell #3, which is that I'd already pre-decided "MSG is bad for you" to be true, simply by default, with no data to back up that assertation. The way I see truth is simple:
* What does the data say?
While we don't know
everything about
everything, let's look at the currently-available data! Objectively, based on 40+ years of research on MSG:
1. Anyone can be allergic to anything, including MSG. Based on studies, MSG only affects a very small percentage of people are sensitive to it.
2. Within that group, the effects are short-term & typically disappear in less than an hour.
3. Independent testing has tied consumption within that group to 3 grams or more of MSG without food (a typical serving of food with added MSG is less than 0.5 grams).
Multicenter, double-blind, placebo-controlled, multiple-challenge evaluation of reported reactions to monosodium glutamate:
https://www.jacionline.org/article/S0091-6749(00)44233-8/fulltext
A Harvard study on MSG: (really good read)
MSG exists in a lot of foods, under a lot of different names:
You're probably eating it much more than you think.
www.businessinsider.com
So my takeaway is:
1. I've been eating it my whole life. I haven't personally experienced any of the negative systems associated with it, so for me, based on the data, no reason to keep it off the "allowed" list. I'd imagine 30+ years is a long enough time to see if I'd get any issues from it!
2. Based on the data, a small segment of people do react negatively to it, and the reaction typically lasts under an hour - so if you are sensitive to it, avoid it! If you are personally mega-sensitive to it, ultra-avoid it!
3. I'd imagine that a lot of the foods it in cause the problems, i.e. ultra-processed, shelf-stable foods, restaurants that re-use oil over & over again, etc.
For me, personally, I choose to use it in my home cooking &
wish that I had done it sooner!