Plant-based diets: nutritional needs vary by age

Replacing animal products with plant-based alternatives requires attention to nutritional value. The effects on nutrient intake vary by age and sex. Research by Maastricht University and Brightlands Campus Greenport Venlo found these differences. Young people under 18 and adults aged 71 and older need extra attention.

For Fascinating Optimens, the researchers analyzed food consumption data from 3,570 Dutch people. They then calculated how replacing animal products with plant-based alternatives would affect nutrient intake. They examined intakes of protein, essential amino acids, vitamins, and minerals. They presented their findings on October 5, during De Week van Ons Eten.

Protein and iron require attention

Protein intake among older adults is already relatively low in their current diet. A shift toward plant-based products can further affect that intake. This depends in part on which plant-based products are chosen. Changes in young people’s intake of certain nutrients also warrant extra attention.

Iron intake among women of reproductive age is already relatively low. It remained below the recommended level in the modeled scenarios as well.

Developing plant-based products

Lead researcher Renate Akkerman emphasizes that a plant-based diet can be nutritionally complete. She says the choice of replacement products is important. She recommends varying plant-based protein sources, including legumes, nuts, seeds, and whole grains.

Maastricht University and Brightlands Campus Greenport Venlo are also developing plant-based protein products. This work is part of the Interreg project SENSUPPLANTPRO, which launched in June 2026. Dutch and German partners are studying how to make these products more nutritious and tastier.

Brightlands.com