Chewing different materials affects the brain and a new study found that chewing on wood (wooden tongue depressors), compared to chewing gum, led to a significant increase in a natural brain antioxidant called glutathione, and better performance on memory tasks.

[u/mvea]

https://www.psypost.org/chewing-wood-may-boost-memory-and-brain-antioxidants-study-finds/

[u/eliminating_coasts]

I think if chewing is the thing that causes the effect, there's not much harm in eating a vast quantity of uncooked and peeled but unchopped carrots - they're not particularly energy dense, high in fibre and vitamins etc. so you probably could just keep munching carrots like a horse for hours without having a significant negative effect.

[u/Graybie → u/eliminating_coasts]

If you eat enough you even start to turn a bit orange. 

[u/Masterjts → u/Graybie]

You have to eat like 15-20 a day (full sized carrots) for 2-3 weeks before you'd even start to see a change. Easier to just spray tan.

[u/Svrogo → u/Masterjts]

You'll also diarrhea.

[u/dependswho → u/Svrogo]

I love raw carrots but yes they give me cramps