[kayoone]

I had similar improvements without fasting and without keto. I do 16:8 on some days but it's mostly to help me manage my weight. I strongly believe most of the fasting benefits come from the fact that it makes managing weight easier. Calorie restriction and tracking my macros has helped me tremendously not only loosing weight but also understanding nutrition and what works for me and what doesn't. I am a 40 year old Software Engineer and fitter and stronger than I have ever been.

I do quite a bit of high intensity cardio (cycling) + weight training and my recovery and peak performance suffered a lot when I tried keto for a few weeks, it also tanked my hormone levels. I still focus my carb intake on times around training but generally don't restrict.

[layer8]

> it also tanked my hormone levels.

How do you measure those?

[kayoone]

with blood work, I had some symptoms as increased fatigue, libido gone and similar which can also come from extended calorie restriction together with intense excercise anyway, so its not necessarly keto related.

[galangalalgol]

For me the benefits seem to be a lack of carb cravings, and my fullness indicator turned on for the first time in my life. That was with 20:4 though, and no keto.

[eganist]

I've been doing this since January 1. 18:6 with full keto (as close to 0g carbs as possible with no sweeteners of any kind) and I feel full.

I've never felt full.

I cried when I realized it. I'm down 30lbs so far.

[kbrisso]

You need to stay on it for months to become keto adapted. I would say 6 months minimum, after that the energy swings go away and you generally have a lot more energy. You can also add MCT oil. The problem with keto is eating enough calories.

[otoburb]

>>You can also add MCT oil.

If you use MCT oil it would be best to start slowly and not on an empty stomach because it can cause stomach aches otherwise.