This! I think it's one hundred percent this. I remember my hair was growing and looked the best when my diet was on point and my exercise was as well. I was eating a lot of coconut oil and sweet potato, fiber, veggies, etc. Just old healthy stuff and that's when my hair was at its best and inflammation was at its lowest. It's was also during the summertime. Perhaps this has to do with candida?
I highly recommend taking probiotics and eating high fiber diets everybody. There's a possibility this has something to do with our gut and the massive amount of b5 doing damage to it. I do remember having diarrhea only when I started the megadose.