Despite the vegetarian diet's links to weight loss, it is possible for vegetarians to be overweight. That's because vegetarian diets, with their focus on fruits and vegetables, tend to be more carb-heavy and fat-deficient than other diets. Science has shown that overloading on carbs and sugars can lead to weight gain, and considering protein's positive effects on satiety and metabolism, skimping on the nutrient can also cause pounds to pile on.
In addition to a plant-based keto diet being limited in nature, Dr. Axe explains that there’s also a high probability that someone on this diet would struggle to consume enough calories and essential fat-soluble vitamins. This could potentially lead to certain nutrient deficiencies and side effects, like fatigue, as a result. “If you’re at all open to the idea, I would highly recommend that you consider a vegetarian keto diet instead of a vegan keto diet. Include at least some animal products in your diet, such as pastured eggs or fermented cheeses or, even better, wild-caught fish like salmon,” he says. “These goods are great sources of protein, fat, choline and fat-soluble vitamins (like vitamins A and K) that are very difficult to get from plant foods alone.”