“I do not recommend fasting for people who are pregnant, have eating disorders, or demonstrate unstable blood glucose. On the other hand, fasting can be an effective tool for weight loss and health improvement. Based on the research above, I think fasting with days of absolutely no calorie intake should be avoided to prevent muscle loss. When using other fasting techniques, pay extra attention to your daily protein intake to prevent or minimize muscle loss.”
Sean may be getting a little ahead of the science on this one. I’m skeptical about his reference No. 4. We clearly need more human research. But that’s not going to help those who want to take action today.