“Sugar is poison” is an absolutely insane claim to make

The claim seemed less overblown to me after watching 'Sugar: The Bitter Truth' by Robert Lustig, MD [0].

[0] https://www.youtube.com/watch?app=desktop&v=dBnniua6-oM&t=8s

PSA: Robert Lustig is notorious for broadcasting incorrect views contradicted by current science.

A good debunk of his nonsense claims is here: https://www.youtube.com/watch?v=LZPKTaVB1IU&t=64s

Most long distance runners fuel in form of gels on their longer runs and races. Those gels are mainly simple sugars and water. They're fine.

I prefer calling it "Hidden sugar is poison for your soul and body".

If you are aware of it you can avoid it.

The dose makes the poison, and with refined sugar the dose required to be harmful is quite small compared to sugar embedded in while fruits.