How to tell if you have hair miniaturization?

I went on a diet and soon after I noticed my hair was coming out very easily. Never had that issue before. I still diet but losing maybe only a 0.5 to 1 pound a month now. The amount of shedding is lower but hair has not recovered. Hair line does not seem to of receded. My understanding is that male pattern baldness causes miniaturization. If it not standard male pattern baldness be good to know my diet is causing this so I can correct.