how does a person who is going on a low-carb diet obtain their essential nutrients if they stop eating foods that contain glucose?

Explanation:

The person can obtain nutrients from protein and fats which can also supply glucose when it is broken down or degraded. Therefore, in the absence of carbohydrates, the body can convert protein, fats or other non carbohydrates sources to glucose. It is not only carbohydrates that can raise the sugar level or insulin, if much calories is consumed, the person can also add up.