The pH (acidic vs alkaline) of your blood is very important for health.
It is tightly regulated by a complex system of buffers that are continuously at work to maintain a range of 7.35 to 7.45, which is slightly more alkaline than pure water.
The pH scale ranges from 0 to 14. A liquid that has a pH of 7 is considered to be neutral (pure water is generally considered to have a neutral pH). Fluids that have a pH below 7 – like soda and coffee – are considered to be acidic. And fluids that have a pH above 7 – like human blood and milk of magnesia – are considered to be alkaline.
When you ingest foods and liquids, the end products of digestion and assimilation of nutrients often results in an acid or alkaline-forming effect – the end products are sometimes called acid ash or alkaline ash.