I've just done 12 weeks on MJ so on week 13 now, no major side effects
Can eat anything with no effect on my gut
No sulphur burps
No vomiting
No new aches or pains
No hair loss
No constipation
However I eat well and around 1500 calories, I aim for 1.5g of protein per kg of my weight, I eat carbs and chocolate regularly. There's people who have dropped to 600-800 cals, chasing total suppression, that's not for me.
The loss of food noise has been life changing for me, I feel like a normal person and am no longer controlled by food. I can enjoy a meal rather than gorging on a portion 5x the size and being hungry again an hour later. I can eat a biscuit rather than the whole packet.
I did go through a few weeks where I was constantly full, struggled to eat well and the weight fell off. Again, not for me as it's a miserable existence, I reduced my dose and things improved.
I did feel exhausted at first and even took naps during the day, this is getting better and I'm now sleeping really well and doing more exercise.
As for the cold thing, yep!!!! Freezing at times so very grateful the weather has improved!
ETA - outwith the few weeks I lost a LOT of weight, I seem to be a 1lb a week person which to me is amazing though seems to be a big disappointment to most :(.