Does low blood ph cause muscles to contract?

This is moot: You have multiple medical problems and I am worried that you are reading internet scams. There are "pop" sites that make unfounded claims about "low blood ph / high blood ph", encouraging you to self-diagnose and purchase unscientific, pricey treatments. Actual ph stays very close to normal 7.40 except in obvious crisis situations. Your key is your relationship with an evidence-based doc.