BackgroundRecent data indicate increasing rates of adult obesity and mortality from cardiovascular disease (CVD) in Greece. No data, however, are available on prevalence of overweight and obesity in relation to CVD risk factors among young adults in Greece.MethodsA total of 989 third-year medical students (527 men, 462 women), aged 22 ± 2 years, were recruited from the University of Crete during the period 1989–2001. Anthropometric measures and blood chemistries were obtained. The relationships between obesity indices (body mass index [BMI], waist circumference [WC], waist-to-hip ratio [WHpR], waist-to-height ratio [WHtR]) and CVD risk factor variables (blood pressure, glucose, serum lipoproteins) were investigated.ResultsApproximately 40% of men and 23% of women had BMI ≥ 25.0 kg/m2. Central obesity was found in 33.4% (average percentage corresponding to WC ≥ 90 cm, WHpR ≥ 0.9 and WHtR ≥ 50.0) of male and 21.7% (using WC ≥ 80 cm, WHpR ≥ 0.8, WHtR ≥ 50.0) of female students. Subjects above the obesity indices cut-offs had significantly higher values of CVD risk factor variables. BMI was the strongest predictor of hypertension. WHtR in men and WC in women were the most important indicators of dyslipidaemia.ConclusionA substantial proportion of Greek medical students were overweight or obese, obesity status being related to the presence of hypertension and dyslipidaemia. Simple anthropometric indices can be used to identify these CVD risk factors. Our results underscore the need to implement health promotion programmes and perform large-scale epidemiological studies within the general Greek young adult population.

The longevity and excellent health status of the population of Crete has been attributed to its lifestyle and dietary habits. The impact of Greek Orthodox Christian Church fasting on these dietary habits has never been studied. One hundred and twenty Greek Orthodox Christians living in Crete participated in a 1-year prospective study. One half of the subjects, who fasted regularly (fasters), and sixty non-faster controls were followed longitudinally for the three main fasting periods over 1 year; Christmas (40 d), Lent (48 d) and the Assumption (15 d). Pre-and end-holy days measurements were performed in each fasting period including: 24 h dietary recall, blood collection and anthropometric measurements. Based on the 24 h recall, fasters as compared with controls had lower intakes of end-holy days dietary cholesterol, total fat, saturated fatty acids, trans-fatty acids and protein (P, 0·001). Fasters presented a decrease of 753 kJ (180 kcal) in end-holy days energy intake (P, 0·05) compared with an increase of 573 kJ (137 kcal) in the controls (P,0·05). Fasters had a decrease in end-holy days Ca intake (P, 0·001) and an increase in end-holy days total dietary fibre (P,0·001) and folate (P, 0·05), attributed to their higher consumption of fruit and vegetables in end-holy periods (P, 0·001). There were no differences for other vitamins or minerals between pre-and end-holy periods in both groups except for vitamin B 2 . The Orthodox Christian dietary regulations are an important component of the Mediterranean diet of Crete characterised by low levels of dietary saturated fatty acids, high levels of fibre and folate, and a high consumption of fruit, vegetables and legumes.

Background: No study to date has focused on the impact of Greek Orthodox Christian fasting on serum lipoproteins and obesity yet.

WHAT'S KNOWN ON THIS SUBJECT:The potential of HP and LGI diets to promote weight loss in adults has resulted in research to investigate the effect of these diets on weight control in children; results have been promising but still conflicting. WHAT THIS STUDY ADDS:In the DiOGenes study, a European family-based, randomized, controlled, multicenter, 6-month energy ad libitum dietary intervention study, the LP/HGI diet increased body fat, whereas overweight/obesity decreased in those on the HP/LGI diet. abstract OBJECTIVE: To investigate the effect of protein and glycemic index (GI) on body composition among European children in the randomized, 6-month dietary intervention DiOGenes (diet, obesity, and genes) family-based study. PATIENTS AND METHODS:In the study, 827 children (381 boys and 446 girls), aged 5 to 18 years, completed baseline examinations. Families with parents who lost Ն8% of their weight during an 8-week run-in low-calorie diet period were randomly assigned to 1 of 5 ad libitum diets: low protein (LP)/low glycemic index (LGI); LP/high GI (HGI); high protein (HP)/LGI; HP/HGI; and control diet. The target difference was 15 GI U between the LGI/HGI groups and 13 protein percentage points between the LP/HP groups. There were 658 children examined after 4 weeks. Advice on food-choice modification was provided at 6 visits during this period. No advice on weight loss was provided because the focus of the study was the ability of the diets to affect outcomes through appetite regulation. Anthropometric measurements and body composition were assessed at baseline, week 4, and week 26. RESULTS:In the study, 465 children (58.1%) completed all assessments. The achieved differences between the GI and protein groups were 2.3 GI U and 4.9 protein percentage points, respectively. The LP/ HGI group increased body fat percentage significantly more than the other groups (P ϭ .040; partial 2 ϭ 0.039), and the percentage of overweight/obese children in the HP/LGI group decreased significantly during the intervention (P ϭ .031). CONCLUSIONS:Neither GI nor protein had an isolated effect on body composition. However, the LP/HGI combination increased body fat, whereas the HP/LGI combination was protective against obesity in this sample of children.

Purpose Previous research has suggested that individuals are mostly prone to loneliness in their later years of life due to being exposed to several risk factors typical of old age. The current study aims to examine possible demographic, health and social determinants of loneliness among older adults in Europe. Methods Data on a nationally representative sample of 5,074 Europeans aged ≥65 years were drawn from the first wave of the Survey of Health, Aging and Retirement in Europe (SHARE, 2004/2005). Frequency of feelings of loneliness was examined according to adverse health conditions, stressful life events and social isolation indicators. Results Female gender, older age, lower socioeconomic status, living unpartnered, being childless and having no activity involvement were significantly associated with frequent feelings of loneliness (p<0.001). The proportion of the respondents who declared to endure loneliness most of the time, compared to none of the time, was significantly higher among Southern Europeans, relative to their Northern counterparts (p<0.001). Recent departure of offspring from the parental nest was a significant predictor of loneliness in both the second (ORs=2.08; 95% CI 1.24-3.48) and the third (ORs=1.75; 95% CI 1.03-2.96) multiple regression models. Conclusion In this sample of older Europeans, several demographic characteristics, specific adverse health conditions, stressful life events and social isolation indicators were associated with feelings of loneliness. Policy initiatives for the alleviation of loneliness in older age should therefore aim at improving psychosocial and health-related difficulties faced by this population.