Why do we test body pH? Health issues that make your body too acidic or too alkaline are usually linked to the pH of blood. Changes in your normal blood pH might be a sign of certain health conditions that may need further investigation.  When your body becomes too acidic (as in acidosis) or too alkaline (as in alkalosis), it can lead to symptoms that make it difficult to manage everyday activities. The exact symptoms will depend on the type of pH imbalance but can include sleepiness, fatigue, headache, loss of appetite, confusion, and vomiting. Nature's Sunshine pH-Test Strips is a quick convenient method to check pH levels, and a quick test may be conducted with either saliva or urine.