Cross-sectional and longitudinal comparisons of metabolic profiles between vegetarian and non-vegetarian subjects: a matched cohort study

TLDR

Let's aggregate. Background: two sentences: "Several previous cross-sectional studies have shown that vegetarians have a better metabolic profile than non-vegetarians, suggesting that a vegetarian dietary pattern may help prevent chronic degenerative diseases." and "However, longitudinal studies on the impact of vegetarian diets on metabolic traits are scarce." Combine into one sentence: "Previous cross-sectional studies show vegetarians have better metabolic profiles, but longitudinal evidence on vegetarian diets’ impact on metabolic traits is scarce." Purpose: from [Purpose, Mechanism] sentence: "We studied how several sub-types of vegetarian diets affect metabolic traits, including waist circumference, BMI, systolic blood pressure (SBP), diastolic blood pressure, fasting blood glucose, total cholesterol (TC), HDL, LDL, TAG and TC:HDL ratio, through both cross-sectional and longitudinal study designs." So purpose: "The study aimed to examine how different vegetarian diet sub-types influence a range of metabolic traits using cross‑sectional and longitudinal designs." Mechanism: from [Mechanism] sentence: "The study used the MJ Health Screening database, with data collected from 1994 to 2008 in Taiwan, which included 4415 lacto-ovo-vegetarians, 1855 lacto-vegetarians and 1913 vegans; each vegetarian was matched with five non-vegetarians based on age, sex and study site." So mechanism: "Data were drawn from the MJ Health Screening database (1994‑2008) comprising 4415 lacto‑ovo, 1855 lacto, and 1913 vegan participants, each matched to five non‑vegetarians on age, sex, and site." Findings: combine all findings sentences into one: Summarize: "Longitudinally, each additional year of vegan diet reduced obesity risk by 7 %, lacto‑vegetarian diet lowered elevated SBP and glucose risks by 8 % and 7 % respectively, and ovo‑lacto diet increased abnormal HDL by 7 %; cross‑sectionally, all vegetarian sub‑types had lower odds of metabolic abnormalities (except HDL and TAG), with the improved profile partly due to lower BMI, and proper management of TAG/HDL and refined carbohydrate intake could further benefit metabolic health." Need to keep concise but include key points. Ensure single sentence. Let's craft sentences: 1.

Abstract

Abstract Several previous cross-sectional studies have shown that vegetarians have a better metabolic profile than non-vegetarians, suggesting that a vegetarian dietary pattern may help prevent chronic degenerative diseases. However, longitudinal studies on the impact of vegetarian diets on metabolic traits are scarce. We studied how several sub-types of vegetarian diets affect metabolic traits, including waist circumference, BMI, systolic blood pressure (SBP), diastolic blood pressure, fasting blood glucose, total cholesterol (TC), HDL, LDL, TAG and TC:HDL ratio, through both cross-sectional and longitudinal study designs. The study used the MJ Health Screening database, with data collected from 1994 to 2008 in Taiwan, which included 4415 lacto-ovo-vegetarians, 1855 lacto-vegetarians and 1913 vegans; each vegetarian was matched with five non-vegetarians based on age, sex and study site. In the longitudinal follow-up, each additional year of vegan diet lowered the risk of obesity by 7 % (95 % CI 0·88, 0·99), whereas each additional year of lacto-vegetarian diet lowered the risk of elevated SBP by 8 % (95 % CI 0·85, 0·99) and elevated glucose by 7 % (95 % CI 0·87, 0·99), and each additional year of ovo-lacto-vegetarian diet increased abnormal HDL by 7 % (95 % CI 1·03, 1·12), compared with non-vegetarians. In the cross-sectional comparisons, all sub-types of vegetarians had lower likelihoods of abnormalities compared with non-vegetarians on all metabolic traits ( P <0·001 for all comparisons), except for HDL and TAG. The better metabolic profile in vegetarians is partially attributable to lower BMI. With proper management of TAG and HDL, along with caution about the intake of refined carbohydrates and fructose, a plant-based diet may benefit all aspects of the metabolic profile.