Nanotechnology in food can be applied for detection in food safety, improving the shelf life of food, diseases in crops and livestock, to timely monitor using sensors what crops need more water and nutrients, deliver the right amount of fertilizer or pesticides and prevent over applying fertilizer and prevent run off and pollutants, to understand how water, fertilizers and pesticides interact with crops and deliver better nutrients creating less waste and protecting the environment, to help in developing supplements to improve nutrient delivery to improve health components in milk may offer some potential solutions to diseases like obesity, type II diabetes and cardiovascular diseases, to develop biosensors to enable early detection of potentially harmful compounds and pathogenic bacteria in food.