Adherence to the Mediterranean Diet and Successful aging in Greeks living in Greece and abroad: the epidemiological Mediterranean Islands Study (MEDIS).

Background: Whether older immigrant populations from the Mediterranean region, continue to follow the MD long after they immigrated is not known. Aim: Compare adherence to the MD and successful aging levels between Greeks living in Greece (GG) and Greeks living abroad (GA). Methods: Anthropometrical, clinical, psychological, sociodemographic, dietary and lifestyle parameters were assessed in a cross-sectional manner in a sample of 252 GG and 252 GA. Mediterranean Diet Score (MedDietScore range 0-55) was used to assess adherence to the MD. Successful aging was evaluated with the validated successful aging index (SAI range 0-10). Results: GA presented higher adherence to MD (p < 0.001); they were consuming significantly more cereals, legumes, vegetables, and fruits compared to GG. GG consumed significantly more dairy (3.8 ± 2.9 vs. 1.9 ± 2.2, p < 0.001) and potatoes (2.4 ± 1.6 vs. 1.9 ± 1.5, p < 0.001) compared to GA. Meat (p = 0.27), poultry (p = 0.72), fish (p = 0.68), olive oil (p = 0.16) and alcohol consumption (p = 0.05) were comparable between the two groups (all p's > 0.05). MedDietScore was positively associated with SAI among both groups after adjusting for possible confounders (0.041 ± 0.014, p = 0.003 GG and 0.153 ± 0.035, p < 0.001 GA). Also, legumes, cereals, fruits and vegetables were found to be beneficial for successful aging. Conclusion: Adherence to the MD is associated with higher levels of successful aging among people of the same genetic background living in different environments. However, traditional dietary habits are gradually abandoned in their native countries, when, at the same time, are considered cultural heritage and preserved accordingly among immigrants.

Successful aging and lifestyle comparison of Greeks living in Greece and abroad: the epidemiological Mediterranean Islands Study (MEDIS).

OBJECTIVES: Comparing lifestyle and successful aging between Greeks living in Greece (GG) and Greeks living abroad (GA) using a multidimensional model of successful aging including both biomedical and non-medical components. METHODS: Anthropometric, clinical, psychological, socio-demographic, dietary and lifestyle parameters were assessed in a random sample of 252 GG and 252 GA. Successful aging was evaluated using the validated successful aging index (SAI range 0-10). RESULTS: GA had better financial and educational status and scored higher in all social activity parameters (p's < 0.05). GA were more likely to be physically active (p < 0.001), had higher adherence to the Mediterranean diet (p < 0.001) and were less likely to be smoking (p = 0.008). Depression was more evident among GG compared to GA (p < 0.001). GA was aging significantly more successfully than GG (p < 0.001). Men irrespective of location were aging significantly more successfully than women (p < 0.05). CONCLUSION: Place of residence and personal choices significantly affect the level of healthy aging among people with similar genetic backgrounds.

The Cardio-Med survey tool: development and pilot validation of a FFQ in a multicultural cardiology cohort.

OBJECTIVE: (i) Describe the development of a multipurpose Cardio-Med survey tool (CMST) comprising a semi-quantitative FFQ designed to measure dietary intake in multicultural patients with or at high risk of CVD and (ii) report pilot evaluation of test-retest reliability and validity of the FFQ in measuring energy and nutrient intakes. DESIGN: The CMST was developed to identify CVD risk factors and assess diet quality over 1 year using an FFQ. Design of the ninety-three-item FFQ involved developing food portion photographs, and a list of foods appropriate for the Australian multicultural population allowing the capture of adherence to a Mediterranean diet pattern. The FFQ was administered twice, 2 weeks apart to assess test-retest reliability, whilst validity was assessed by comparison of the FFQ with a 3-d food record (3DFR). SETTING: The Northern Hospital and St Vincent's Hospital, Melbourne, Australia. PARTICIPANTS: Thirty-eight participants aged 34-81 years with CVD or at high risk. RESULTS: Test-retest reliability of the FFQ was good: intraclass correlation coefficient (ICC) ranged from 0·52 (Na) to 0·88 (alcohol) (mean 0·79), with energy and 70 % of measured nutrients being above 0·75. Validity was moderate: ICC ranged from 0·08 (Na) to 0·94 (alcohol) (mean 0·59), with energy and 85 % of measured nutrients being above 0·5. Bland-Altman plots demonstrated good levels of agreement between the FFQ and 3DFR for carbohydrates, protein, alcohol, vitamin D and Na. CONCLUSIONS: The CMST FFQ demonstrated good test-retest reliability and moderate validity for measuring dietary energy and nutrients in a multicultural Australian cardiology population.

Effect of Lupin-Enriched Biscuits as Substitute Mid-Meal Snacks on Post-Prandial Interstitial Glucose Excursions in Post-Surgical Hospital Patients with Type 2 Diabetes.

Hospital biscuit snacks offered to Type 2 Diabetes Mellitus (T2DM) patients may adversely affect glycaemic control. This study investigated the effect of lupin mid-meal biscuit snacks, compared to spelt or standard hospital biscuits, on interstitial glucose levels in post-operative T2DM inpatients. In a pilot cross-over pragmatic study, 20 patients (74 ± 12 years) consumed, in order, lupin biscuits (20% lupin), wholemeal spelt and standard plain sweet biscuits as mid-meal snacks (2 biscuits each for morning and afternoon tea) on three consecutive days. Continuous glucose monitoring, appetite perceptions and bowel motions were recorded. Glucose levels were not significantly different in the first 90 min after mid-meal biscuit consumption at morning and afternoon tea, irrespective of type. However, after consuming the lupin biscuits only, glucose levels were significantly (p < 0.001) reduced 90 min postprandially after dinner, indicating a potential second-meal effect. Patients also reported improved satiety after lupin biscuit consumption on day 1, compared to days 2 and 3 (p = 0.018). These findings suggest that lupin-enriched biscuits may improve both glycaemic control and satiety in hospitalised T2DM patients, potentially contributing to reduced length of stay. Larger controlled studies are warranted to confirm these findings and inform potential revision of hospital menu standards for T2DM patients.

The AUStralian MEDiterranean Diet Heart Trial (AUSMED Heart Trial): A randomized clinical trial in secondary prevention of coronary heart disease in a multiethnic Australian population: Study protocol.

The Mediterranean diet was first characterized as a heart-protective diet in the 1960s. The significant cardioprotective effects of the Mediterranean diet in comparison to the standard-care low-fat diet have been established in the primary prevention of cardiovascular disease (CVD); however, there is insufficient evidence in secondary prevention research to influence the current standard of care. Opportunity exists to assess the Mediterranean diet as a therapeutic target for secondary CVD prevention within Australia's ethnoculturally diverse communities. The AUSMED Heart Trial is a multisite randomized controlled trial that will evaluate the efficacy of the Mediterranean diet for secondary prevention of CVD in the Australian health care setting. This trial aims to evaluate the effect of a 6-month Mediterranean diet intervention (delivered by dietitians) versus a "standard-care" low-fat diet in reducing the composite incidence of cardiovascular events at 12 months and at trial end in participants with documented evidence of a previous acute myocardial infarction at trial entry. The quality of the diet at baseline and follow-up will be assessed using comprehensive dietary questionnaires and diaries as well as relevant dietary biomarkers (such as urinary polyphenols and erythrocyte fatty acids). Cardiovascular risk markers, including novel measures of immune and inflammatory status, endothelial function, vascular compliance, platelet activity, and body composition, will be collected to explore possible mechanisms for treatment effect. Cost-effectiveness will also be estimated to support policy translation. We plan to recruit 1,032 participants (516 per arm) from cardiology clinics in major Australian hospitals in Melbourne, Adelaide, and Brisbane.

Observational study of adherence to a traditional Mediterranean diet, sociocultural characteristics and cardiovascular disease risk factors of older Greek Australians from MEDiterranean ISlands (MEDIS-Australia Study): Protocol and rationale.

AIM: To describe the study protocol of the MEDiterranean ISlands-Australia (MEDIS-Australia) Study modelled on the MEDIS Study conducted in Greece. The present study aims to explore adherence to the traditional Mediterranean diet pattern, determine enablers and barriers to adherence, explore the definition of Greek cuisine, and associations between adherence to the diet pattern and risk factors for cardiovascular disease (CVD) and metabolic syndrome in older Greek Australians originally from Greek islands and Cyprus. Now long-term immigrants, with at least 50 years in Australia, characteristics and risk factor profiles of older Greek islander-born Australians will be compared and contrasted to their counterparts living on Greek islands to evaluate the influence of migration on adherence. METHODS: The present study is an observational study of cross-sectional design using a modified lifestyle and semi-quantitative food frequency questionnaire to capture sociodemographic, health, psychosocial and dietary characteristics, including cuisine, of 150 older Greek islander-born Australians. Anthropometric measures and medical history will be collected. Participants will be aged over 65 years, live independently, are originally from a Greek island and are free from CVD. RESULTS: Data collection is underway. CONCLUSIONS: Characteristics and behaviours associated with adherence, if identified, could be evaluated in future studies. For example, exploration of enablers or barriers to adherence to a Mediterranean dietary pattern in an Australian population.

Evolution of Mediterranean diets and cuisine: concepts and definitions.

BACKGROUND AND OBJECTIVES: The Mediterranean diet has been demonstrated to provide a range of health benefits in observational and clinical trials and adopted by various dietary guidelines. However, a broad range of definitions exist impeding synthesis across trials. This review aims to provide a historical description of Mediterranean diets, from the ancient to the modern, to inform future educational and diet index tool development representing the 'traditional' Mediterranean diet. METHODS AND STUDY DESIGN: Nine databases were searched from inception to July 2015 to identify papers defining the Mediterranean diet. The definition accepted by the United Nations Educational, Scientific and Cultural Organization (UNESCO) was also reviewed. RESULTS: The 'traditional' Mediterranean diet is described as high in unprocessed plant foods (grains, vegetables, fruits, legumes, nuts/seeds and extra virgin olive oil), moderate in fish/shellfish and wine and low in meat, dairy, eggs, animal fats and discretionary foods. Additional elements relating to cuisine and eating habits identified in this review include frequent intake of home cooked meals; use of moist, lower temperature, cooking methods; eating main meals in company; reduced snacking occasions; fasting practice; ownership of a vegetable garden; use of traditional foods and combinations; and napping after the midday meal. CONCLUSIONS: Scope exists for future tools to incorporate additional elements of the 'traditional' Mediterranean diet to improve the quality, consistency, and synthesis of ongoing research on the Mediterranean diet.

Retaining Traditional Dietary Practices among Greek Immigrants to Australia: The Role of Ethnic Identity.

This article explores why some Greek immigrants to Australia continue to adhere to a traditional Mediterranean diet whereas others have adopted eating behaviors characteristic of a less healthy "Australian" diet. Twelve qualitative interviews were conducted and comparisons made between individuals consuming more (n = 6) and less traditional diets (n = 6). The level of adherence to the diet was previously assessed by a diet score in a separate quantitative study (MEDIS-Australia) from which the subset of 12 participants for the present study was recruited. Analysis revealed that maintenance of a strong ethnic identity offers a pathway through which individuals retain dietary practices of their homeland.

Health benefits of legumes and pulses with a focus on Australian sweet lupins.

BACKGROUND AND OBJECTIVES: The 68th United Nations General Assembly declared 2016 the International Year of Pulses. Therefore it is timely to review the current evidence of the benefits of legumes for human health with a focus on Australian sweet lupins. METHODS AND STUDY DESIGN: Medline, Pubmed, Cochrane library were searched to identify cross-sectional/epidemiological studies, randomised controlled trials (RCTs) and systematic reviews. RESULTS: The strongest evidence appears to be for links between eating legumes and reduced risk of colorectal cancer as well as eating soy foods and reduced LDL cholesterol. However, epidemiological studies and RCTs suggest that replacing several meat-based meals a week with legumes can have a positive impact on longevity, diabetes, cardiovascular disease and weight management, potentially via favourable effects on the gut microbiome. Sweet lupins are unique among legumes with one of the highest combined amounts of digestible plant protein (38%) and dietary fibre (30%). Unlike other legumes, their low amount of anti-nutritional factors negates the need for soaking/cooking and they can therefore be eaten uncooked. Sweet lupins may lower blood pressure, improve blood lipids and insulin sensitivity and favourably alter the gut microbiome. There is growing interest in pulses, especially sweet lupins, as ingredients to improve the nutritional value of baked goods (particularly gluten free) and to create novel products to replace meat. CONCLUSION: Legumes form part of most traditional diets. They, including sweet lupins, can play a useful role in health maintenance.

Low all-cause mortality despite high cardiovascular risk in elderly Greek-born Australians: attenuating potential of diet?

Elderly Greek-born Australians (GA) consistently show lower rates of all-cause and CVD mortality compared with Australian-born. Paradoxically, however, this is in spite of a higher prevalence of CVD risk factors. This paper reviews the findings from the Food Habits in Later Life (FHILL) study, other studies on Greek migrants to Australia and clinical studies investigating dietary mechanisms which may explain the "morbidity mortality paradox". The FHILL study collected data between 1988 and 1991 on diet, health and psycho-social variables on 818 people aged 70 and over from Sweden, Greece, Australia (Greeks and Anglo-Celts), Japan and were followed up for 5-7 years to determine survival status. The FHILL study was the first to develop a score which captured the key features of a traditional plant-based Mediterranean diet pattern (MDPS). A higher score improved overall survival in both Greek and non-Greek elderly reducing the risk of death by 50% after 5-7 years. Of the 5 cohorts studied, elderly GA had the lowest risk of death, even though they had the highest rates of obesity and other CVD risk factors (developed in the early years of migration with the introduction of energy dense foods). GA appeared to be "getting away" with these CVD risk factors because of their continued adherence in old age to a Mediterranean diet, especially legumes. We propose that the Mediterranean diet may, in part, be operating to reduce the risk of death and attenuate established CVD risk factors in GA by beneficially altering the gut microbiome and its metabolites.

Health economics of weight management: evidence and cost.

The World Health Organization estimates that around one billion people throughout the world are overweight and that over 300 million of these are obese and if current trends continue, the number of overweight persons will increase to 1.5 billion by 2015. The number of obese adults in Australia is estimated to have risen from 2.0 million in 1992/93 to 3.1 million in 2005. The prevalence of obesity has been increasing due to a convergence of factors--the rise of TV viewing, our preference for takeaway and pre-prepared foods, the trend towards more computer-bound sedentary jobs, and fewer opportunities for sport and physical exercise. Obesity is not only linked to lack of self esteem, social and work discrimination, but also to illnesses such as the metabolic syndrome and hyperinsulinaemia (which increases the risk of developing heart disease, diabetes, hypertension, fatty liver), cancer, asthma, dementia, arthritis and kidney disease. It has been estimated that the cost of obesity in Australia in 2005 was $1,721 million. Of this amount, $1,084 million were direct health costs, and $637 million indirect health costs (due to lost work productivity, absenteeism and unemployment). The prevalence cost per year for each obese adult has been estimated at $554 and the value of an obesity cure is about $6,903 per obese person. Government efforts at reducing the burden remain inadequate and a more radical approach is needed. The Australian government, for example, has made changes to Medicare so that GPs can refer people with chronic illness due to obesity to an exercise physiologist and dietitian and receive a Medicare rebate, but so far these measures are having no perceptible effect on obesity levels. There is a growing recognition that both Public Health and Clinical approaches, and Private and Public resources, need to be brought to this growing problem. Australian health economist, Paul Gross, from the Institute of Health Economics and Technology Assessment claims there is too much reliance on health workers to treat the problem, especially doctors, who have not been given additional resources to manage obesity outside a typical doctor's consultation. Gross has recommended that further changes should be made to Medicare, private health insurance, and workplace and tax legislation to give people financial incentives to change their behaviour because obesity should not just be treated by governments as a public health problem but also as a barrier to productivity and a drain on resources. A Special Report of the WMCACA (Weight Management Code Administration Council of Australia) (www.weightcouncil.org) on the "Health Economics of Weight Management" has been published in the Asia Pacific Journal of Clinical Nutrition in September 2006. This report explores the cost benefit analysis of weight management in greater detail.

Content of a novel online collection of traditional east African food habits (1930s-1960s): data collected by the Max-Planck-Nutrition Research Unit, Bumbuli, Tanzania.

BACKGROUND: Knowledge of traditional African foods and food habits has been, and continues to be, systematically extirpated. With the primary intent of collating data for our online collection documenting traditional African foods and food habits (available at: www.healthyeatingclub.com/Africa/), we reviewed the Oltersdorf Collection, 75 observational investigations conducted throughout East Africa (i.e. Tanzania, Kenya, and Uganda) between the 1930s and 1960s as compiled by the Max Planck Nutrition Research Unit, formerly located in Bumbuli, Tanzania. METHODS: Data were categorized as follows: (1) food availability, (2) chemical composition, (3) staple foods (i.e. native crops, cereals, legumes, roots and tubers, vegetables, fruits, spices, oils and fats, beverages, and animal foods), (4) food preparation and culture, and (5) nutrient intake and health status indicators. RESULTS: Many of the traditional foods identified, including millet, sorghum, various legumes, root and tubers, green leafy vegetables, plant oils and wild meats have known health benefits. Food preparatory practices during this period, including boiling and occasional roasting are superior to current practices which favor frying and deep-frying. Overall, our review and data extraction provide reason to believe that a diversified diet was possible for the people of East Africa during this period (1930s-1960s). CONCLUSIONS: There is a wealth of knowledge pertaining to traditional East African foods and food habits within the Oltersdorf Collection. These data are currently available via our online collection. Future efforts should contribute to collating and honing knowledge of traditional foods and food habits within this region, and indeed throughout the rest of Africa. Preserving and disseminating this knowledge may be crucial for abating projected trends for non-communicable diseases and malnutrition in Africa and abroad.

Does diet matter for survival in long-lived cultures?

In 1987, the International Union of Nutritional Sciences (IUNS) subcommittee on Nutrition and Ageing, in conjunction with the World Health Organization (WHO) global program for the elderly, embarked on the 'Food Habits in Later Life' (FHILL): a cross-cultural study to determine to what extent health, social and lifestyle variables, especially food intake, collectively predict survival amongst long-lived cultures. A total of 818 participants aged 70 years and over were recruited from five IUNS centres. Mortality data were collected after five to seven years. The cohorts included Swedes in Sweden (SWD), Greeks in Greece (GRS) and in Melbourne, Australia (GRM), Anglo-Celts in Australia (ACS) and Japanese in Japan (JPN). Information was obtained on health, lifestyle and diet at baseline. A Cox Proportional Hazard model containing ten potential predictors of survival, adjusted to age at enrollment and ethnicity/locality, was developed to analyse the survival data. Based on up to seven years survival data, it was found that being an elderly Greek in Australia conferred the lowest mortality risk and being an elderly Greek in Greece conferred the highest mortality risk. When the ten potential predictors of survival were entered into the Cox model, the memory score, the Mediterranean diet score, Activities of Daily Living (ADL) and general health status scores showed the greatest effects in significantly reducing mortality hazard ratios by 22%, 13%, 4% and 4%, respectively. For diet score, a one-unit change predicted a significant 13% difference in survival. Of the lifestyle (modifiable) variables entered in the multivariate model, exercise and social activity were not significant predictors of survival suggesting that diet is a more important predictor of survival than these variables. Another lifestyle variable, smoking, significantly increased mortality hazard ratios by 67%, making it a more important predictor of survival than diet. Being male (non-modifiable) also increased risk of death by 63%. Diet, particularly the Mediterranean Diet, operates irrespective and together with other factors as an appreciable contributor to survival, with a strength comparable to or greater than all other measured variables. The independence and strength of the predictiveness of food pattern for survival, and for this to be cross-cultural from Europe to Asia is a novel and important observation for food and health policy.

Legumes: the most important dietary predictor of survival in older people of different ethnicities.

To identify protective dietary predictors amongst long-lived elderly people (N= 785), the "Food Habits in Later Life "(FHILL) study was undertaken among five cohorts in Japan, Sweden, Greece and Australia. Between 1988 and 1991, baseline data on food intakes were collected. There were 785 participants aged 70 and over that were followed up to seven years. Based on an alternative Cox Proportional Hazard model adjusted to age at enrollment (in 5-year intervals), gender and smoking, the legume food group showed 7-8% reduction in mortality hazard ratio for every 20g increase in daily intake with or without controlling for ethnicity (RR 0.92; 95% CI 0.85-0.99 and RR 0.93; 95% CI 0.87-0.99, respectively). Other food groups were not found to be consistently significant in predicting survival amongst the FHILL cohorts.

Morbidity mortality paradox of 1st generation Greek Australians.

There is evidence in Australia that 1st generation Greek Australians (GA), despite their high prevalence of cardiovascular disease (CVD) risk factors (e.g. obesity, diabetes, hyperlipidaemia, smoking, hypertension, sedentary lifestyles) continue to display more than 35% lower mortality from CVD and overall mortality compared with the Australian-born after at least 30 years in Australia. This has been called a 'morbidity mortality paradox' or 'Greek-migrant paradox'. Retrospective data from elderly Greek migrants participating in the International Union of Nutrition Sciences Food Habits in Later Life (FHILL) study suggests that diets changed on migration due to the: (i) lack of familiar foods in the new environment; (ii) abundant and cheap animal foods (iii) memories of hunger before migration; and (iv) status ascribed to energy dense foods (animal foods, white bread and sweets) and 'plumpness' as a sign of affluence and plant foods (legumes, vegetable dishes, grainy bread) and 'thinness' as a sign of poverty. This apparently resulted in traditional foods (e.g. olive oil) being replaced with 'new' foods (e.g. butter), 'traditional' plant dishes being made more energy dense, larger serves of animal foods, sweets and fats being consumed, and increased frequency of celebratory feasts. This shift in food pattern contributed to significant weight gain in GA. Despite these potentially adverse changes, data from Greece in the 1960s (seven countries study) and from Australia in the 1990s (FHILL study) has shown that Greek migrants have continued to eat large serves of putatively protective foods (leafy vegetables, onions, garlic, tomatoes, capsicum, lemon juice, herbs, legumes, fish) prepared according to Greek cuisine (e.g. vegetables stewed in oil). Furthermore, GA were found to return to the traditional Greek food pattern with advancing years. We suspect that these factors may explain why GA have recently been found to have over double the circulating concentrations of antioxidant carotenoids, especially lutein, compared with Australians of Anglo-Celtic ancestry. This in turn may have helped to make the CVD risk factors 'benign' and reduce the risk of death. This raises the question whether specific dietary guidelines need to be developed for recent migrants to Australia, encouraging them to retain the best of their traditional cultures and include the best of the mainstream culture.