A marketing campaign aims to debunk diets full of plant-based protein.

The ad, launched by The Center For Consumer Freedom, reads "fake meat, real chemicals". According to the organization and a group of dietitians, plant-based meat is not a healthy alternative to animal protein because it is highly processed full of additives and can cause weight gain.

Consumers can compare and learn more about plant-based ingredients using an online tool. Just visit cleanfoodfacts.com.