Upon reading: A bit unclear but yes it seems like unhealthy food + new microbe mutations + obesity

They talk about obesity as a separate cause than ultra processed food, I thought it was quite related, something I need to look into

I’m not obese or overweight and while my main meals (breakfast and dinner) are generally very healthy - I can still eat a lot of trash (ultra processed)food as snacks.

I’m sure that could have an effect.