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Objective: Past vegetarians research has often found that they have lower blood pressure (BP). Effects may include their lower BMI and higher intake levels of fruit and vegetables. Besides, the study pursues to extend this evidence in a diverse population containing vegans, lacto-ovo vegetarians and omnivores. Design: The study analyzed data on five hundred vigorous individuals aged 20 years or older from a standard medical screening program and provided validated questionnaire. Criteria were established for vegan, lacto-ovo vegetarian, partial vegetarian and omnivorous dietary patterns. Setting: Health screening programs were conducted at a standard medical screening program in Taiwan between 2006 and 2017. Dietary data were gathered by self-administered questionnaire. Subjects: Five hundred Taiwanese subjects representing the cohort. Results: Multiple regression analyses confirmed that the vegan vegetarians had lower systolic and diastolic BP (mmHg) than omnivorous Taiwanese (β = − 6.8, p < 0.05 and β = − 6.9, p < 0.001). Findings for lacto-ovo vegetarians (β = − 9.1, p < 0.001 and β = − 5.8, p < 0.001) were similar. The vegetarians were also less likely to be using antihypertensive medications. Defining hypertension as systolic BP > 139 mmHg or diastolic BP > 89 mmHg or routine of antihypertensive medications, the odds ratio of hypertension compared with omnivores was 0.37 (95% CI = 0.19–0.74), 0.57 (95% CI = 0.36–0.92) and 0.92 (95% CI = 0.50–1.70), respectively, for vegans, lacto-ovo vegetarians and partial vegetarians. Results were reduced after adjustment for BMI. Conclusions: The study concludes from this relatively large study that vegetarians, especially vegans, with otherwise diverse characteristics but stable diets, do have lower systolic and diastolic BP and less hypertension than omnivores. [ABSTRACT FROM AUTHOR]

A health belief model is used to evaluate people's beliefs about health problems and predict engagement in health-promoting behaviors. Overweight and obesity are health problems that could be corrected by healthier diet. Eighty-seven employees of the Taipei Tzu Chi Hospital participated in a month-long program that offered 500-calorie vegetarian meals. The health belief model questionnaire was designed and administered. Body composition (weight, body mass index, body fat, body water, and muscle mass) was measured weekly. Additionally, the number of meals taken and visits to nutrition consultants were analyzed. Overall, a higher perceived susceptibility was related to a decrease in weight, body fat, and muscle. Higher perceived benefits or higher perceived barriers were both related to a decrease in weight and body fat, but to an increase in body water and muscle. In the overweight or obese group, a significant correlation was found between perceived barriers and weight. No significant relationship was found between the health belief model and the total number of meals or number of visits to nutrition consultants. Perceived benefits and barriers were significantly related to changes in weight, body fat, body water, and muscle. With vegetarian meal plans as the cue for action, the health belief model can be utilized to predict changes in body composition. [ABSTRACT FROM AUTHOR]

The equivalent reduction in greenhouse gas emissions (GHGEs) by Mahayana Buddhists with vegetarian diets is quantitatively evaluated. The Buddhists in seven Mahayana-dominated countries or regions, i.e., China, Japan, Vietnam, South Korea, Taiwan, Hong Kong, and Singapore, are studied. Assessments of the vegetarian population among these Mahayana-dominated countries or regions are performed. Correlation formulas based on data from a national survey are developed to quantify the GHGEs of various dietary groups by using the meat consumption as the only required input. To demonstrate its reliability, the prediction from the formulas developed is first compared with the results of a food production-and-consumption study using a different approach. Then, the formulas are used to assess the GHGE reduction due to Mahayana Buddhists with vegetarian diets. The assessment indicates that Mahayana Buddhists with vegetarian diets account for the equivalent GHGE reduction of 48.83 million metric tons of carbon dioxide equivalent, which is a huge amount and is equal to 11.3 or 8.9% of the GHGEs from France or the UK in 2012, respectively. [ABSTRACT FROM AUTHOR]

Vitamin D is responsible for multiple metabolic functions in humans. Rickets are the most common disease caused by vitamin D deficiency. It is caused by poor calcium intake resulting in poor serum-ionized calcium. The purpose of this study is to develop a rapid, sensitive, and feasible method to determine the 25-hydroxy-vitamin D3 (25(OH)D3) levels in blood samples for clinical assessment. In this study, gas chromatography coupled mass spectrometry with trimethylsilyl derivatization (TMS-GC-MS) is the most suitable protocol for quantitative analyses of 25(OH)D3. Performance of method was evaluated and compared with liquid chromatography and immunoassay. Method validation has been carried out with plasma specimens. The limit of quantitation of TMS-GC-MS method is 1.5 ppb with good linear correlation. Furthermore, the dietary intake and nutritional status of vegetarian and non-vegetarians in Taiwan were assessed by our validated method. As a result, this vitamin D nutrition survey demonstrates that most Taiwanese people have insufficient vitamin D. Due to dietary habits; the male vegans may have the highest risk of vitamin D deficiency. [ABSTRACT FROM AUTHOR]

Vegetarian diet is usually thought to be healthy for the population; however, an unbalanced vegetarian diet may result in hyperlipidemia. Here, we report the case of a 55-year-old lacto-ovo vegetarian with hypercholesterolemia who underwent an effective dietary intervention. After the dietitian's assessment, an educational and individual meal plan was designed, which complied with the Taiwan vegetarian guideline. Results indicated that the total cholesterol, triglyceride, high-density lipoprotein, and low-density lipoprotein levels returned to their normal ranges within 4 weeks of intervention. Therefore, the intervention (i.e., dietitian's individual nutritional education) and consuming 2 meals per day, designed to comply with the Taiwan vegetarian guideline, could be beneficial for serum lipid profiles. [ABSTRACT FROM AUTHOR]

Background: Short sleep duration has been reported to associate with increased insulin resistance. However, no studies have investigated whether such association exists in vegetarians. The aim of this study was to investigate the association between sleep duration and insulin resistance in Taiwanese vegetarians. Methods: A total of 1290 individuals were recruited from a regional hospital in south Taiwan during their regular routine physical examination. Only individuals who described themselves as Buddhist vegetarians were included in the study. Demographic information and clinical characteristics were collected and multiple logistic regression analysis was used to evaluate the association between sleep duration and insulin resistance. Results: A total of 433 vegetarians were included in the study. Results from univariate logistic regression indicated that insulin resistance was significantly associated with male sex, greater waist circumference, higher triglyceride levels, lower high-density lipoprotein cholesterol levels, higher plasma creatinine levels, higher alanine transaminase levels, greater energy expenditure, and sleep duration of more than 8 hours per night. Multiple logistic regression revealed that insulin resistance was significantly and independently associated with sleep duration of more than 8 hours per night (odd ratios = 2.27, 95% confidence interval = 1.24, 4.11) after adjusting for waist circumference and levels of alanine transaminase. Conclusions: Sleep duration of more than 8 hours per night is an independent risk factor associated with increased insulin resistance in vegetarians. [ABSTRACT FROM AUTHOR]

Diet is thought to be one of the leading causes of bone mineral loss in aging people. In this study, we explored the potential impact of a vegetarian diet on bone mineral density (BMD) in adult Taiwanese men and women. This was a cross-sectional study of the relationship between diet (vegetarian versus non-vegetarian) and BMD and the incidence of osteoporosis. Bone mineral density was determined in a cohort of 1865 adult male and female patients who underwent routine examination in a regional teaching hospital in Taiwan between February 2003 and February 2004. Subjects with definite vertebral problems, known osteopathy, or poor posture were excluded. Dual-energy X-ray absorptiometry (DEXA) was used to determine BMD, on the right hip in men and on lumbar vertebrae L2 to L4 in women. The subjects were grouped according to sex and diet, and were then stratified by age within each of the four groups. The outcome measures were the BMD value and the incidence of osteopenia or osteoporosis according to defined criteria. Bone mineral density gradually declined with increasing age in Taiwanese men, while Taiwanese women showed a precipitous decrease in BMD after the 5th decade. However, no statistical differences in BMD were observed between vegetarians and non-vegetarians of either sex. The proportion of subjects with osteopenia or osteoporosis also appeared comparable between vegetarians and non-vegetarians of either sex. BMD shows an age-related decline in Taiwanese men and women, and eating a vegetarian diet does not appear to affect this decline. [ABSTRACT FROM AUTHOR]

Background:Although the health benefits of vegetarian diets have been well documented among Western population, there are geographic differences of vegetarian diets and the health benefits of the Taiwanese vegetarian diet have not been studied extensively. In addition to conventional risk factors, homocysteine and high-sensitivity C-reactive protein (hs-CRP) levels have been found to predict first atherothrombotic events. We undertook this study to examine the total risk profile of Taiwanese vegetarians.Methods:A total of 198 healthy subjects (99 vegetarians and 99 omnivores) were recruited. Fasting blood samples were analyzed for glucose, cholesterol, triglyceride, high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), white blood cell count, hs-CRP and homocysteine.Results:There was no significant difference in age, body mass index, blood glucose, white blood cell count, triglyceride and HDL-C between the two groups. The vegetarian group had significantly more females (65.7 vs 46.5%); lower body weight (58.66±11.13 vs 62.88±12.24 kg); shorter height (159.14±7.88 vs 162.53 ±8.14 cm); lower total cholesterol (184.74±33.23 vs 202.01±41.05 mg/dl); and lower LDL-C (119.63±31.59 vs 135.89±39.50 mg/dl). Hs-CRP was significantly lower (0.14±0.23 vs 0.23±0.44 mg/dl, P=0.025), whereas homocysteine was significantly higher (10.97±6.69 vs 8.44±2.50 μmol/l, P=0.001) in vegetarians than omnivores.Conclusions:Taiwanese vegetarians have lower total cholesterol, LDL-C and hs-CRP levels, and higher homocysteine levels than omnivores. Owing to different predictive value of each risk factor, the Taiwanese vegetarians had a better cardiovascular risk profile than omnivores. Whether the Taiwanese vegetarian diet should be supplemented with vitamin B12 to lower serum homocysteine level remains to be addressed.European Journal of Clinical Nutrition (2008) 62, 138–144; doi:10.1038/sj.ejcn.1602689; published online 14 March 2007 [ABSTRACT FROM AUTHOR]

Abstract: The aim of this study was to evaluate possible factors affecting serum polychlorinated dibenzo-p-dioxin (PCDD) and dibenzofuran (PCDF) levels of people living near municipal waste incinerators (MWIs). We selected 19MWIs in Taiwan and collected 1708 serum samples from residents 18–65years old who had lived within 5km of one of the selected MWIs for at least 5years. The samples were analyzed using a standardized study protocol to assure comparability of the concentrations from 17PCDD/F congeners. The results suggested that a vegetarian regimen was a protective factor to avoid serum PCDD/F accumulation in the subjects. In addition, the current data seemed to support the hypothesis that serum PCDD/F levels of residents living near MWIs are related to they consumed the locally grown or cultivated vegetable and animal foods, such as poultry products near the MWIs. Our results can be used to create guidelines for preventing excessive PCDD/F accumulation from eating animal and vegetable foods grown near MWIs. [Copyright &y& Elsevier]

Objective: A plant-based diet has been associated with a reduced risk of cardiovascular (CV) diseases. This study aimed to determine the levels and correlations of CV-related biomarkers and the beneficial role of dietary habits., Methods: A total of 63 healthy vegetarians (n = 32) and omnivores (n = 31) were recruited. The baseline characteristics were recorded and measured (including lipid profiles, blood glucose, etc.). Liquid chromatography-mass spectrometry method was developed for the simultaneous determination of seven circulating CV-related biomarkers., Results: L-carnitine (L-Car), L-methionine, and ascorbic acid (AA) were significantly higher in vegetarians than in omnivores. In the vegetarians, L-Car had a negative correlation with triacylglycerols (P = 0.042) and blood glucose (P = 0.048) and a positive correlation with high-density lipoprotein cholesterol (P = 0.049). L-Car was also positively correlated with L-lysine (P = 0.009), L-methionine (P = 0.006), and AA (P = 0.035). The vegetarians' AA also had a negative correlation with L-homocysteine (P = 0.028). In the omnivores, L-Car was negatively correlated with total cholesterol (P = 0.008), low-density lipoprotein cholesterol (P = 0.004), and high-density lipoprotein cholesterol (P = 0.038). Omnivores' body mass index was positively correlated with L-homocysteine (P = 0.033), and age was positively correlated with trimethylamine N-oxide (P < 0.001) and blood glucose (P = 0.007), but not in vegetarians., Conclusions: Our results suggest that vegetarians have an elevated level of L-Car, which might be associated with endogenous biosynthesis and diet composition. Circulating L-Car might play an important role in CV protection, especially in vegetarians., (Copyright © 2019 Elsevier Inc. All rights reserved.)