Then I read on HN about Taubes and then keto, which led me to /r/keto and I tried it for fun (for science !) for two months (I don't need to lose weight). I did feel A LOT better and lost 2 Kg (which isn't much but I'm 1m76 for 62 Kg).
Improvements were :
- no more sleepiness during the day. I had suffered about this since forever.
- less headaches (and nauseas).
- less belly bloating (I always thought it was normal)
- (slightly) better sleep.
Since then I eat an egg & bacon for breakfast, and eat a lot less bread and pasta (and carbs). I miss baguette (I'm French) but I feel great overall.
I guess it's just +1 for anecdotal evidence ! :)