Read the following passage and answer the question: Vegetarian diets reduce the risk of chronic diseases. Lacto-vegetarians tend to be notably healthi...

Read the following passage and answer the question:

Vegetarian diets reduce the risk of chronic diseases. Lacto-vegetarians tend to be notably healthier than meat eaters, though it is unclear if this applies to vegans as well. Diets rich in whole grains, nuts, fruits, and vegetables are low in saturated fats and cholesterol, and high in fiber, vitamin C, folate, potassium, magnesium, and phytochemicals that protect against many diseases. Such diets also reduce the risk of hypertension and type 2 diabetes mellitus. Diets low in fiber and high in meat and chicken can significantly increase colorectal cancer risk. Plant foods contain polyphenols and more polyunsaturated fatty acids, which help maintain brain function during aging. Vegetarian diets may aid in weight loss, long-term weight management, and are linked to longevity. Animal-based diets are generally higher in fat and calories, while plant-based foods are nutrient-dense and low in energy. Although restrictive vegan diets might cause deficiencies in calcium, iron, zinc, vitamin B12, and sometimes protein, well-planned vegetarian diets are nutritionally adequate and beneficial for all life stages and athletes. Increasing fruit and vegetable intake while limiting animal foods is a healthy choice.

Question: Which of the following is NOT a benefit of adopting a vegetarian diet?