The FastDay Forum

I have eaten 5-2 for almost a year now and I love it. But I also hear about many people just eating 6-1.

But for who is 6-1 suitable? More specifically: Is 6-1 almost as efficient as 5-2 if you are only interested in keeping down the IGF-1 level in your blood, and not interested at all in loosing weight?

[carorees]

IGF1 is driven by protein and carb intake. Fasting works by depriving your body of protein and carbs during the fast. So, the effectiveness of 6:1 (and 5:2) in reducing IGF1 will depend on your diet on the non fast days, particularly if you're doing 6:1.