Starch breaks down into glucose which is the body’s main source of energy. Starch can be found in many food such as potatoes, rice, cereal, bread, pasta, corn, plantain and yam. If you have no starch in your diet the body the body will try and get energy from fat in your body. This is called ketosis. Ketosis can cause the affected to suffer from stomach pains, frequent urination, thirst, shortness of breath, fatigue, confusion and nausea.The body will also suffer from hypoglycemia which is low sugar/glucose levels in the blood. Hypoglycemia is when glucose levels are too low. This can cause the affected to suffer from dizziness, sweating, hunger, confusion, headaches, inability to concentrate, a change in personality and confusion.Protein is mainly responsible for growth and repair. It contains amino acids which builds bones, skin, blood and cartilage. Examples of food high in protein includes eggs, milk, cheese, fish, chicken, meat and soya beans.Protein also produces body chemicals such as hormones and enzymes.Not having protein in your diet can lead to reduced protein synthesis and tissue breakdown. This occurs because the body’s breaking down existing proteins to use as amino acids. Protein deficiency can lead to muscles pain and swelling, low metabolism, fatigue, trouble losing weight/building muscle mass (muscle atrophy), mood swings and difficulty concentrating. Reducing sugars can be found in milk and other dairy products, honey, fruits such as apples.One of the most important reducing sugars is glucose because it helps the brain function properly and is the body’s main source of energy. These sugars can also reduce other compounds.If a person lacks reducing sugars in their diet they will have low blood sugar levels, which is also called hypoglycemia. Some symptoms of hypoglycemia include: Mood swings, confusion, unsteadiness, headaches, disturbed sleep, sweaty hands, heart palpitations and seizures.Lipids can be found in fatty meats e.g. bacon slices, dairy products, nuts such as peanuts and cashews. Lipids are important to the body because they make up cell membrane which protects cells from their external surroundings, lipids also provide basic building blocks for hormones and acids such as bile. Lipids cushion the body’s main organs, insulate the body and also store energy for later use. Without lipids the body won’t be able to absorb essential nutrients that the body will need. Lack of lipids can lower HDL levels in the blood which may increase chances of cardiovascular problems. Lack of lipids may cause problems with cell formation and function. It may also cause hormone production problems as cholesterol makes hormones e.g. hydrocortisone. Lipid deficiency causes dry/flaky/cracking skin. It can also cause stiff joints, small lumps on upper arms, excessive thirst and earwax, lackluster skin and hair, dry eyes/throat/mouth and a combination of oily and dry skin.Water is essential for all your bodily functions. Water also carries blood, oxygen and dissolved nutrients around the body to tissues and cells. As Well as drinking water, water can be added to the diet by eating fruit and vegetables such as lettuce, cucumber, melon and peppers.Without water a person will become dehydrated and this can lead to an electrolyte imbalance.Lack of water can also lead to digestive problems such as constipation.An electrolyte imbalance can lead to muscles spasms (cramp), an irregular heartbeat and fatigue.Fibre is important for the body’s health and bowel movement it adds bulk to your diet which helps with weight loss as the body will need to eat less to feel as full.There are also two types of fibre soluble fibre (dissolves in water) and insoluble fibre (does not dissolve in water)If a person lacks fibre in there diet they can become constipated or suffer from diarrhoea.You can also have poor blood sugar control and suffer from digestive disease such as hemorrhoids. Symptoms of these problems can be dehydration, stomach cramps, bloatedness.