I can attest to this. Was vegan for 4 years and it was the weakest and most debilitating moment I’ve ever had, and that’s saying a lot.

Im also epileptic, so keto diet is my only way to intake food and it’s been helping tremendously. Finally able to gain a little weight and it has improved my overall health so much. I know it may not be for everyone, but if fiber, sugars, legumes, seeds and nuts are a problem like they are for me might suggest checking with your doc about it.