Research doesn't show that dietary acids affect body pH that much.
There's massive buffer systems in the body.
There's massive buffer systems in the body.
The body is incredibly complex so I'm not saying this is conclusive but here's a source plus a lot of explanation with numerous experiments.
https://pmc.ncbi.nlm.nih.gov/articles/PMC3828631/
Another thing: Calcium strongly associates with acid.
And there's no evidence of osteoporosis or bone leaching with high acid diets.
> This hypothesis posits that foods associated with an increased urinary acid excretion are deleterious for the skeleton, leading to osteoporosis and enhanced fragility fracture risk.
That the second part of this hypothesis could be true is actually super easy to prove from a purely chemical perspective. When the pH of the blood drops, cells such as bones and muscle cells will release buffering ions such as phosphate from bone and proteins from muscle cells. As long as the minerals from the bones are not replaced, the bones will weaken.
The straw man in this claim is that the pH discussion usually talks about what foods change the body's overall pH balance in what direction; not just the urine.