Thank you both, yes have been googling away for the last few weeks really, changed my macros slightly, added some supplements etc. Unfortunately I didn't have a lot of hair to begin with so I feel I need to do what it takes to protect it.
I was racing towards my August four stone target having lost 2stone since June alone. I'm just taking my foot off the gas a little, and giving myself till the end of the year to lose the five stone I wanted instead of October.
The principles of this diet have got me eating more veg than I ever have in my adult life, fasting makes me feel great and is second nature now - so is exercising. I'm not bloated, my skin is less grey. I'm happier. But I won't be if I continue to lose my hair. I guess it'll just be a bit of trial and error over the next few weeks.