I'm on 2 teaspoons a day.
Any studies out there about the negative effects of it?
Is Marmite poisoning a thing?
this post was submitted on 18 Mar 2025
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There are 2 components in Marmite that are present in really high concentrations that can eventually pose problems, the worst offender being salt.
Per the American Heart Association: https://www.heart.org/en/healthy-living/healthy-eating/eat-smart/sodium/how-much-sodium-should-i-eat-per-day
Marmite contains 490mg of salt per 8g serving, which could be approximately a teaspoon, but you can measure that yourself. This would bring the limit to 4 to 5 teaspoons a day to stay below the recommended intake.
The other component is Mono-Sodium Glutamate, which can lead to "increase in oxidative stress which could lead to alterations in the cardiovascular and renal function", per the NIH https://pmc.ncbi.nlm.nih.gov/articles/PMC9563186/
People get all bent out of shape about MSG. It's basically just fancy salt.
What would Americans know of the dangers of Marmite? I'm sure the British Heart Foundation have said that Marmite is perfectly safe at any amount. I'd provide facts, but I don't need to.
I don't think America has an equivalent, so I think they'd find it too strongly flavoured, as they do with Vegemite
I think the problem that ‘merkins have with Marmite is that it doesn’t contain 95% sugar.
Good point, the LD50 of Marmite for non-UK people is 1mg
Half that if you're an overdramatic YouTuber.
According to the linked research, for an 80kg person, problematic amount of Marmite from the MSG contents standpoint would firmly sit around 1,4kg daily consumption, in which case you will be also ingesting definitely lethal 140g of salt, and even worse, more than 11 standard size jars of Marmite.
Luckily our bodies know how much salt we need and it tastes bad once you've had enough. Marmite would taste terrible* once you had enough salt
*Terrible as in too salty, as opposed to the regular terrible some people accuse it of being