[Role of dairy and alternative plant products in a healthy and sustainable diet].

Dairy products and plant alternatives are two food groups that are part of the Spanish population's diet. Both have a very different nutritional composition - unlike plant products, the high nutritional density of dairy products makes it easier to meet nutrient requirements at different stages of life. Although the environmental impact of dairy production is greater than that of plant-based products, it falls below that of other food groups such as red meat, including pork and beef.