We know that minoxidil can impact both blood pressure and heart function so fluid reiention can be a side effect with cardiovascular overlaps. This could cause weight gain in the form of water retention
The length of the hairs that fall out is likely not related nor can it be used for a diagnosis. In general it would be best to have a comprehensive examination by a doctor (in person) if you are trying to find the cause for your hair loss.
There is no easy way. If you can find another treatment that works you might not notice as much shedding but other than that going off minoxidil slowly will jist delay the time it takes for all the newly grow hairs tfall back out. Regardless of whether you stop quickly or slowly... you’ll l...