I use both and they're both great, but also not drop-ins for each other. OSMand has more features, but is way more confusing and quite a bit slower. So I have OrganicMaps cover my basic navigation needs, but if e.g. I want to access offline Wikivoyage travel guides, I use OSMand.
Still a wonderful and stable solution. It has some killer features as well: unlike OM, it let's you route anything. In OM good luck routing without proper GPS fix (from a parking, etc), in Osmand you can do pretty much anything.
It's insane how feature rich Osmand is, up to a point where it became a bit too complex for some.
Even if you're not a diabetic, blood glucose spikes affect your mental performance like a weak stimulant, creating mild mood swings. Also, high amounts of high GI foods stimulate body fat production.
> Also, high amounts of high GI foods stimulate body fat production.
That idea, 'the insulin hypothesis', has not been proven. In fact there is now evidence that claim is false. (Paywalled study [1], summary in this article [2]).