Other Benefits
Other health claims include improved mental clarity, lower insulin and blood sugar levels, longevity, cellular repair, better digestion, increased growth hormone, and reduction of inflammation (among others). 

Mark elaborates on his experience, "Intermittent fasting helped me break through my weight loss/fat burning plateaus after seven months on very strict keto diet. I definitely notice boosted mental clarity when I fast, and improved moods. I also feel more in control over my eating, and have learned not to fear being hungry and to control mindless eating."