Food security is when an individual has sufficient quantity of nutritious, affordable food to allow for a healthy lifestyle today and in the future without economic concerns. There are six complementary elements in food security. Availability, is about the quality of the food given and the diversity of the meal. The body uses a variety of nutrient including, Carbohydrates, fats, proteins, vitamins and minerals. Nutrition is a key requirement for a human to live healthy. Affordability is caused economically, as the population increase to 9 billion in mid century, the price of food at supermarkets will merge due to only 15 percent of the world land is arable. The quality and safety of the food a human consumes crucial, it can include dangerous chemicals which can potentially harm a humans body. In addition to, having access to safe, sufficient and nutritious food at all times without worrying about the economic accessibility to the food given to live a healthy lifestyle. On the other hand, food insecurity is defined when an individual is at the state without reliable access to safe and nutritious food. This affects certain citizens that may not have reliable access to resourceful shops or a high money income. Food insecurity can have several causes, droughts and extreme weather conditions are a huge struggle considering its a problem farmers can not stop. This can result in failed harvest which lead to food sacrifice and a huge increase of price of the specific food. Food insecurity can cause individuals to become malnourished ( not having the right nutrients, e.g. carbohydrates, fats, proteins, vitamins and minerals), eating one specific meal that fills their body up e.g. fast food. This is because fast food lacks nutrients and a high amount of carbohydrates, unhealthy fat and sodium which can damage a person’s health. All of these elements explain why food security is important to an individual but also globally.This comes to an conclusion that scientist alone can not solve food security.