The pH scale measures the acidity or alkalinity of a substance, ranging from 0 (most acidic) to 14 (most alkaline), with 7 being neutral. The pH of the body is tightly regulated to maintain optimal health and function. Different body fluids have different pH levels, with blood pH ranging from 7.35 to 7.45.
Diet can affect the body's pH balance, with foods like fruits and vegetables being alkaline and meat and dairy products being acidic. However, the pH of the diet does not have a significant impact on the body's pH level.