Trevor thinks about trying out his friend's diet, but he is concerned after learning that inadequate levels of carbohydrates in the diet

Inadequate levels of carbohydrates in the diet can cause a build-up of ketones in the body. When your body does not have enough glucose for energy, it will result in a reduction of the circulating insulin level and the body will breaks down stored fat, which promotes high level of circulating fatty acids producing ketones.

In addition, mild ketosis can cause mental fatigue, bad breath, nausea and a headache, but severe ketosis can lead to painful swelling of the joints and kidney stones. Therefore, Trevor goal is to consume 225 to 325 grams of carbohydrates a day to prevent ketosis.