Answer:
Ketosis is a state characterized by elevated levels of ketone bodies in the blood, occurring when the liver converts fat into fatty acids and ketone bodies (which can be used by all of the body for energy as an alternative to glucose). These ketone bodies are a by-product of the lipid metabolic pathway after the fat is converted to energy.|

Ketoacidosis, by contrast, is the accumulation of excessive keto acids in the blood stream (specifically acetoacetate and beta-hydroxy butyrate). Whereas most consider ketoacidosis to be a medical condition, a minority of specialists believe that ketosis is not.

People mistake ketosis for ketoacidosis and think it is infectious

so ketosis is not infectious
First answer by Anandvijayakumar. Last edit by Anandvijayakumar. Contributor trust: 782 [recommend contributor recommended]. Question popularity: 3 [recommend question].