But here's a dilemma, high levels of GM also appear to fight cancer.
http://cancerfightingstrategies.com/methylglyoxal-and-cancer.html#sthash.C0CyBYwi.dpbs
However it is noted in the Wiki for Manuka honey that the methylglyoxal can be neutralized, while like some other honeys, it retains its antibacterial properties.
That is, several raw honeys have been found to almost randomly have profound antibacterial and anti-inflammatory properties, so much so that for example, it would be the “ideal toothpaste” against gum disease. Pasteurization destroys the effect, however.
But this particular honey, mostly found in New Zealand, also contains this methylglyoxal, and its profoundly bad side effects.