Low carb diets are linked to better teeth and dental health. I'm on shitty internet right now, or I'd link sources.

For me, the best part about being in ketosis is that my mental state was no longer directly affected by food. I'd been very used to the "Eat Food -> Feel Good! -> Get Hungry -> Feel Bad!" cycle that's promoted by a higher carb diet. Skipping a meal would destroy productivity and make me grumpy. Ketosis made it easy for me to skip a meal (or two) without any hit to my productivity or mental state.