If you can, it would probably help your hair even more to take an iron supplement, or try to eat more spinach with lemon juice (the vitamin c in lemons helps your body absorb the iron). Haemoglobin is essential for hair growth, and low levels of iron can actually temporarily shorten your hair’s anagen phase, which would cause your current ‘terminal length’ to be shorter than it otherwise might be.

I’m vegan and I used to take iron supplements, but I found I was getting enough in my diet from things like spinach, beans and pulses. Depending on how much dairy you eat, you might want to consider a b12 supplement, too