Anti-nutrients What are They and Why are They Feared? by Anjanee Sharma on January 21, 2021 at 9:10 PM Anti-nutrients are naturally occurring substances in plants and animals that block and interfere with how our body absorbs nutrients like calcium, iron, potassium, magnesium, and zinc from our gut into our bloodstream. They may decrease the amount of nutrients you get from your food. They are a type of survival tactic used by plants to defend against fungi, bacteria, parasites, and insects - they taste bitter, and the seeds are indigestible leading to animals avo...