Hmmmm, not sure why I don't believe the last two lines of this post written by someone who endorses going low contact with notably overweight family memberslol you couldn't make this up..
"Both I and my stbx are a good weight and both do on average 3 sessions of fitness or sport every week. There are rarely ready meals in the house (and DD doesnt like those), not a lot of cake or biscuits, only occasional crisps and sugary drinks, takeaways are no more than once a week and pizza is always home made, and we buy only the most middle-class chocolate. The only member of family who is notably over weight she only sees a couple of times a year, and no one around her is a fitness evangelist. You couldn't model a much more balanced eating and exercise life."