My mum would be beyond horrified if I ever told her and would deny everything and say it was in my imagination but I have zero doubt that she massively impacted/impacts on my weight.
My earliest memories are of her off to weight watchers and eating different food from my dad, brother and I, giving me smaller portions than everyone else, making me feel guilty about eating anything, me sneaking cooking chocolate out of the cupboard (we never had crisps or chocolate/sweets in the house).
She's struggled with her weight her whole life as well (although nowhere near as much as me) and is a competitive underwater which is hugely annoying ('oh I don't know how you could possibly eat a WHOLE brownie, 2 bites is enough for anyone' well no mum, I could easily eat the entire batch and follow it up with a 3 course meal if required)
The only time I get respite from the constant commentary/judgement is when I'm on a diet so currently she's being okay.
One day I must get round to that therapy.......