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Towards a Healthier Britain

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Towards a Healthier Britain To w ar d s a Healthier Britain 2010 Analysis by Dr. Pamela Mason & Dr. Carrie Ruxton Contents Executive Summary EXECUTIVE SUMMARY 1 REFERENCES 23 Given the array of nutritious, affordable foods in the shops and the wealth of health information provided by experts, few would expect significant numbers of British adults and INTRODUCTION 2 ANNEX 1: 25 children to be at risk of nutrient deficiency. Yet, this is exactly the case, according to the WHY MEETING DIETARY TARGETS IS Opinions of the European Food Safety Government’s own dietary surveys. ESSENTIAL FOR HEALTH 3 Authority on the function of vitamins and A quarter of women have inadequate intakes of iron, more evidenced by the limited progress in fruit, vegetable and minerals in the body 25 than 50% lack the antioxidant, selenium, and nearly one in oily fish targets. Vitamin and mineral supplements are ARE WE GETTING ENOUGH OF THE ten men are low in magnesium. Intakes of iron, magnesium, proven to contribute significantly to recommended intakes KEY NUTRIENTS? 6 ANNEX 2: 26 zinc, iodine and selenium are woefully low in adolescent and to boost nutritional status. In the cases of vitamin D girls. One in five pre-school children have abnormally low and long-chain omega-3s, where food sources are limited, Women 6 Table 1: Average daily vitamin and mineral iron stores, and significant groups of elderly people are supplements have a vital role in helping people to meet intakes from food sources by age in women iron deficient. Blood levels of vitamin D are too low to recommended levels. Given the evidence on diet Men 9 in the British National Diet and Nutrition sustain normal bone health in a quarter of adults. Fish inequalities, increased access to supplementation could Survey 2000-1 26 intakes have declined in the last decade and are too low to disproportionately help vulnerable groups in society such Children 11 meet recommendations for long-chain omega-3s. More as low income women, pregnant adolescents, the elderly Table 2: Average daily vitamin and mineral worryingly, given the investment in public health, the and young children. Elderly people 12 intakes from food sources by age in men situation has improved very little over the last decade. in the British National Diet and Nutrition Better awareness of the role of supplements in supporting Omega-3s and fish intakes 15 Survey 2000-1 27 Experts agree that optimal levels of vitamins and minerals a healthy, balanced diet could help to improve nutritional are vital for health and well-being. Indeed, a substantial status in the UK. At present, official advice on supplements THE ROLE OF SUPPLEMENTS IN Table 3: Intakes of selected vitamin and body of research shows that low levels of specific nutrients is contradictory and poorly implemented. There are also BOOSTING NUTRIENT INTAKES 16 mineral intakes (from all sources) by age increase the risk of chronic conditions, such as heart misplaced concerns that providing information on in people >65 years in the National Diet disease, diabetes, osteoporosis and some cancers. Clearly, supplements is at odds with food-based messages. This is Who uses supplements? 17 and Nutrition Survey 28 dietary intakes need to improve if we are to safeguard the not the case. Leadership from the new Government could future health of the nation. significantly improve the quality of dietary advice given to Attitudes to supplements’ use 18 the public and encourage individual responsibility. But Messages about eating a healthy, balanced diet should information alone is not enough and has to be supported continue to underpin advice given to the public, but more MOST VULNERABLE COULD BENEFIT by policies which make healthier choices easier and more could be made of the role of supplements in helping people FROM SUPPLEMENTATION 19 attractive. Health professionals, media and industry can all to achieve vitamin and mineral targets. Dietary change help by ensuring that more unbiased, evidence-based takes time and is difficult to achieve for many people as SUPPLEMENT AWARENESS IS NEEDED 21 information on supplements is made available to the public. Call to Action 21 • Advice about supplements can sit logically alongside advice on healthy eating, and provides additional options for consumers, particularly those unable to make dietary changes immediately • At present, official advice about supplements is inconsistent. A more joined up approach across all Government communication channels relating to diet would benefit the public • Dietary advice given by health professionals and carers could be clearer and more effective if Government policy on supplements for vulnerable groups was implemented consistently • The media remains an important source of information for the public. However, journalists need to keep in mind the primary purpose of supplements, which is simply to help people meet dietary targets • The industry has a role to play in supporting the work of other stakeholders, e.g. by creating affordable products, providing objective information for the public and ensuring that supplements reflect the latest scientific evidence To w ar d s a Healthier Britain 2010 | 1 Introduction Why meeting dietary targets is essential for health There is no doubt that nutrition underpins good health, and that eating a healthy, balanced The right levels of vitamins and minerals are required to maintain good health. This diet is the best way to achieve appropriate amounts of vitamins, minerals and other reasoning underpins the Dietary Reference Values, recommendations published by the UK essential nutrients. Department of Health in 1991.9 These not only advise on the amount of calories, protein and fat that should be consumed, but give two types of recommendations for vitamin and Countless research studies show that there are strong More worryingly, given the investment in public health, links between intakes of particular nutrients and the risk the situation has improved very little over the last decade. mineral intakes in order to prevent deficiencies. The first, the Reference Nutrient Intake of chronic disease.1 For example, low intakes of calcium, Just over a third of adults, but only 15% of children, meet (RNI), is designed to meet the requirements of most people. The second, the Lower 2 7 magnesium and vitamin D increase the risk of bone the 5-a-day target for fruits and vegetables. Adolescents Reference Nutrient Intake (LRNI) can only meet the needs of less than 3% of the population. disease, poor maternal intakes of folate during eat only a tenth of the recommended amount of oily fish pregnancy contribute towards the incidence per week and risk missing out on the benefits of long- Thus, intakes which fall below the LRNI are likely to be inadequate. The next section of this of foetal neural tube disorders, such as chain omega-3 fatty acids.8 report examines how nutrient intakes in the UK match up to the Dietary Reference Values. spina bifida, and low intakes of selenium Dietary advice to the public remains essential, with may increase the risk of some types of More recently, the European Food Safety Authority (EFSA) an emphasis on positive messages about the cancer.3 Emerging evidence points to a published a series of opinions10 on the functions of benefits of healthy eating. However, change role for certain nutrients in the specific vitamins and minerals in the body. This review takes time and, in the meantime, there “As well as the opinions prevention of heart disease,4 was carried out to evaluate the evidence for claims about remains a need for adequate levels of of expert bodies, such as the management of falls in the elderly,5 the role of nutrients in maintaining normal health. The nutrients, particularly in vulnerable groups and the maintenance of good Department of Health and opinions of EFSA are presented in Annex 1 and make such as young children, teenagers, low cognitive function in later life.6 Given interesting reading. For example, EFSA accepts there is income groups and the elderly. This is where EFSA, a considerable body the ageing population in the UK, optimal sufficient proof that calcium, phosphorus, vitamin D and supplementation has an important role to play. nutrition will become crucial for of research studies has magnesium are essential for normal bone health. There As previous Government advice has already ensuring quality of life and helping to is also enough evidence to show that vitamin A, vitamin recognised, there are significant benefits to highlighted links between control NHS budgets. B12, vitamin C, copper and zinc support normal immune giving information about supplementation inadequate intakes of function, and that iron and pantothenic acid help maintain The array of foods available today and alongside advice about healthy eating. cognitive/mental function. Several nutrients were the wealth of health information vitamins and minerals and This report looks at the evidence from dietary established to have antioxidant properties, helping to provided by experts and the media may surveys, explores the role of supplements in the risk of poor health” protect cells from damage, e.g. selenium, vitamin C, encourage us to imagine that diets in the safeguarding nutrient intakes and nutrient status, zinc and copper. UK have never been better. However, and suggests ways to improve how nutritional this is not the case for many people. As well as the opinions of expert bodies, such as the advice is presented to the public, particularly by National surveys in adults, children Department of Health and EFSA, a considerable body of public bodies. and older people all show the same research studies has highlighted links between picture, that significant groups of inadequate intakes of vitamins and minerals and the risk people do not meet dietary of poor health. For example, low intakes of vitamin D and recommendations for many key “Adolescents eat only a calcium have been associated with the serious bone nutrients.
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