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Water Soluble Vitamin C (Ascorbic Acid). Sources. Citrus fruits (oranges, lemons, limes, grapefruit), green peppers, strawberries, broccoli and sweet and white potatoes are all excellent food sources of this vitamin. Function. Signs of Deficiency.
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Water Soluble Vitamin C (Ascorbic Acid) Sources Citrus fruits (oranges, lemons, limes, grapefruit), green peppers, strawberries, broccoli and sweet and white potatoes are all excellent food sources of this vitamin.
Function Signs of Deficiency • Without vitamin C, collagen can't be replaced and the different types of tissue break down, leading to symptoms of scurvy; • muscle and joint pain • tiredness • the appearance of red dots on the skin • bleeding and swelling of the gums • Immune System • Helps absorb iron (Fe) • Healthy Blood Vessels
Water solubleVitamin B1 (Thiamin) Good sources include fortified breakfast cereals, wholegrain breads, eggs, all types of meat, milk and dairy products, vegetables, fresh and dried fruit and yeast extracts such as Marmite.
Function Signs of DeficiencyOnly seen in communities where there is little to eatEasily destroyed by heat when cookingEasily dissolves in water Works as an essential coenzymefor utilisation of carbohydrates to release in the body BeriBeri; Excessive fatigue Heaviness and stiffness in legs Unable to stand or walk May be bedridden Damage to the brain causing confusion CHO from food ENERGY
Vitamin B2 (Riboflavin)- Sources- the same as Thiamin! Good sources include fortified breakfast cereals, wholegrain breads, eggs, all types of meat, milk and dairy products and green leafy vegetables.
Function Signs of Deficiency • Dryness and cracking of skin around the mouth and nose • Swollen tongue • Lack of energy CHO Fat Protein ENERGY! Assists with normal growth in children Water soluble Destroyed by heat, processing, cooking or exposure to sunlight Often replaced in order to prevent deficiency, e.g. fortified cereals
Fat soluble Vitamin A Animal sources: Retinol Vegetable sources: CaroteneGoodSources; mainly in liver, fish oils, dairy, margarine and plant foods with an orange or yellow pigment.
Function Signs of Deficiency • Maintains healthy eye sight and skin • Antioxidant • 250,000 people become blind • every year due to deficiency • Responsible for 70% of cases of • childhood blindness • Poor night vision
Fat soluble Vitamin D (cholecalciferol) Sources; fats & oils, meat, fish, fortified breakfast cereal, milk and cheese Can be made in the skin from UV-B exposure. In the UK this is insufficient between October and March.
Function Signs of Deficiency Osteomalacia (in adults) and rickets (in children) Curved spine, bow-legs, deformed pelvis Muscular and bone pain CALCIUM Essential for calcium absorption to build strong bones and teeth
Fat soluble Vitamin E (tocopherol)Sources; richest in vegetable and seed oils and whole grain cereals
Function Signs of Deficiency Deficiency is rare except where the immune system is compromised from factors such as pollution, smoking and coeliac or liver disease. May be more at risk of cancer and CHD due to permeability of the cell membranes. Antioxidant which promotes healthy cell membranes. Associated with prevention of cancer and coronary heart disease.
Fat soluble Vitamin K (napthoquinone) Sources; richest in green leafy vegetables. Also found in tea and products containing vegetable oils and margarine
Signs of Deficiency Function- essential for clotting the blood • Deficiency is rare except in the new born as levels of this vitamin are low in human milk. • Infants are routinely given this vitamin either by mouth or injection as a prevention of deficiency. • Newborns who are deficient can suffer spontaneous bleeding, which can lead to brain haemorrhage and death.
IronHaem (animal) iron sources; red meat, liver and kidneyNon haem (plant) iron sources; green leafy vegetables, lentils and fortified breakfast cereals
Function Signs of Deficiency • Iron deficiency anaemia; • lack of energy • shortness of breath • heart palpitations • pale complexion To make haemoglobin in red blood cells which carry oxygen in the blood
Sources Mineral: Calcium Milk, cheese, yoghurt, green leafy vegetables and fish with edible bones such as salmon and sardines
Signs of Deficiency Function Osteomalacia (in adults) and rickets (in children) Curved spine, bow-legs, deformed pelvis Muscular and bone pain • Formation and development of • bones and teeth • Contraction of muscles including • the heart • Nerve function • Blood clotting
Potassium Found in most types of food. Good sources of potassium include: fruit, vegetables, nuts, Seeds, pulses, milk, Fish, shellfish, beef, Chicken and turkey
Function Signs of Deficiency • used to control pH and osmotic pressure within the cells and therefore maintain blood pressure • electrolyte (fluid) balance • nerve function Hypokalaemia; muscle weakness, tingling or numbness, fainting due to low blood pressure
Zinc Good sources are meat, seafood and dairy products
Sodium Many concentrated sources of sodium are obvious because of their salty taste.
Signs of Deficiency Function FLUID BALANCE! • Muscle cramps • Fluid retention • Headache • Nausea and vomiting Regulating body water content and electrolyte balance
Iodine A trace element found in seawater, rocks and some types of soil. Can be found in some plant foods depending on the soil in which the plants are grown. However, the richest sources are seawater fish, seaweed and shellfish.
Signs of Deficiency Function Stimulates the thyroid gland to make hormones which are involved in controlling metabolism. Goitre- swelling of the thyroid gland, seen in developing countries Lethargy and weight gain
Phosphorus Signs of deficiency Function There is no danger of the body becoming depleted of phosphorus unless under a starvation diet when the muscle, brain and nervous system can be severely affected • maintenance of normal bones and teeth • the production of energy • normal function of cell membranes
Estimated Average Requirement (EAR) No. of people EAR Requirements
Estimated Average Requirement (EAR) This is an estimate of the average requirement for energy or a nutrient. The EARs for energy are based on the present lifestyles and activity levels of the UK population. Approximately 50% of a group of people will require less energy or nutrient, and 50% will require more. No. of people EAR Requirements
Reference Nutrient Intake (RNI): No. of people RNI Requirements
Reference Nutrient Intake (RNI): RNI is often used as a reference amount for population groups to indicate the amount of a nutrient that is enough to ensure that the needs of nearly all the group (97.5%) are being met. The RNI is used for recommendations on protein, vitamins and minerals. No. of people RNI Requirements
Lower Reference Nutrient Intake (LRNI) No. of people LRNI Requirements
Lower Reference Nutrient Intake (LRNI) LRNI is a useful measure of nutritional inadequacy . It indicates the amount of a nutrient that is enough for only the small number of people who have low requirements (2.5%). The majority of people need more. No. of people LRNI Requirements
Guideline Daily Amounts (GDAs) These are guidelines for healthy adults and children about the approximate amounts of calories or nutrients required for a healthy Diet. Often used by food retailers to display the amount of energy (in kilocalories or kilojoules) and/or fat, saturated fats, sugars and salt in food and drink products in relation to DRVs. It is not compulsory to display this information.
Dietary reference values (DRV) An umbrella term given to the estimated dietary requirements of particular groups in a population. There are three types of DRVs; EAR, RNI and LRNI. DRVs are important for ensuring adequate intakes of energy and nutrients throughout life and assist in preventing malnutrition. DRVs are estimates of the requirements for groups of people and are not recommendations or goals for individual people.
http://www.nutrition.org.uk/ https://www.bda.uk.com/foodfacts/home http://www.nhs.uk/Pages/HomePage.aspx http://meatandeducation.redmeatinfo.com/ http://www.milk.co.uk