I've been doing this long enough and I know this stuff well.
If you want a simple answer there is one. It's all about the nutritional quality of the food you eat. Everything is down stream from that.
We can go into all the specifics but it doesn't change the fundamentals. Moreover, given just how complex biological systems are you are of course going to have things like gut health play a role but it doesn't change the fact that if you eat the wrong stuff you wreck your gut. This in turn will create more complexities but the solution though is somewhat simple. Stop eating and give your body a break. This is why fasting is super useful.
You talk about going to a bakery to get "real stuff" unfortunately bread is excess carbohydrates (like sugar) no matter what. Unless you're physically active you should probably just cut down on bread altogether. Bakery stuff could be made with love and care which would make it a better quality food but it's not nutritionally important. It's just rocket fuel for your muscles and you don't need a lot of it.
If you want a simple answer there is one. It's all about the nutritional quality of the food you eat. Everything is down stream from that.
We can go into all the specifics but it doesn't change the fundamentals. Moreover, given just how complex biological systems are you are of course going to have things like gut health play a role but it doesn't change the fact that if you eat the wrong stuff you wreck your gut. This in turn will create more complexities but the solution though is somewhat simple. Stop eating and give your body a break. This is why fasting is super useful.
You talk about going to a bakery to get "real stuff" unfortunately bread is excess carbohydrates (like sugar) no matter what. Unless you're physically active you should probably just cut down on bread altogether. Bakery stuff could be made with love and care which would make it a better quality food but it's not nutritionally important. It's just rocket fuel for your muscles and you don't need a lot of it.