r/freshmilled

I want to start milling my own flour for the health benefits. I am in South Africa and most of these fancy stone/ceramic mills cost a fortune due to it being imported. I can get a good quality stainless steel grinder for a reasonable price. I have heard that the problem with these are mostly that it heats up, which will decrease nutrient profile. If I can prevent the heating up from happening by grinding for short periods of time and/or freezing wheat berries beforehand, will I be able to reap the health benefits? Anyone who grinds the wheat berries with a stainless steel grinder and seen health benefits?