Ketosis is a normal metabolic state that can happen on a very low-carb diet, while ketoacidosis is a medical emergency most often linked to uncontrolled diabetes.

Blood ketone testing is the most direct home method, while breath and urine tools can be useful in narrower situations but are easier to misread.

Common signs of ketosis can include appetite changes, breath changes, and higher ketones on a test, but symptoms alone are not always enough to confirm what is happening.

Paleo can improve food quality for some readers, but it is not automatically low carb and it does not target ketosis the way keto does.

Ketosis often feels hard to reach when carbs stay higher than expected, protein and calories drift, or hidden starches and habits keep resetting the process.