A vegetarian diet offers various benefits, including lower risk of chronic diseases like heart disease and type 2 diabetes due to higher intake of fruits, vegetables, and fiber. It supports weight management and may lead to lower cholesterol levels. However, it may lack certain nutrients like vitamin B12, iron, and omega-3 fatty acids, requiring careful planning to ensure nutritional adequacy. Some vegetarian substitutes may be highly processed or high in calories, potentially leading to unhealthy dietary patterns if consumed excessively.