I've always been a bit meh, when it comes to anything other than diet and exercise impacting your weight, and kind of saw 'genes' as a bit of an excuse for tubbiness (I'm not slim! So I was judging myself more than anyone!! And I do know I could do more exercise and eat better)...
But ... My world view had been somewhat shattered by my own kids!!
DS1 is thick-set. He's not overweight, but just looks Fuller and more solid. Pretty sure he would be overweight if he did 'normal' levels of exercise for his age.
DS2 is a skinny thing!
Now here's the weird thing!...
DS1 is v v athletic! In a swim club, plays football, never stops moving. He doesn't eat as much as his younger brother and what he does eat is v healthy! He doesn't naturally have a sweet tooth and hates chocolate (I wish I did!!). He's not keen on carbs really and mainly eats lean meat and fish and vegetables.
DS2 does not stop eating and what he likes to eat is chocolate, cake, ice cream etc... We are careful with how much rubbish he's allowed to eat, but at school he always has sweet puddings, sweet snacks when offered and when both r offered a treat at home DS1 usually says no and DS2 always says yes!!
I can only conclude that there is some biological contributor to weight, and DS2 has DH genes (skinny) and DS1 has inherited mine (more thick set)
Seems so u fair!!
And I feel I've been wrong about this whole thing for 40 years!
(Unless DS1 's thick-setness is muscle?? Could an 8 year old have muscle in a way that makes them appear more thick set??)