The association between plant-based diet indices and metabolic syndrome in Iranian older adults

Mohammad Reza Amini, Hossein Shahinfar, Farhang Djafari, Fatemeh Sheikhhossein, Sina Naghshi, Kurosh Djafarian, Cain Clark, Sakineh Shab-Bidar

Research output: Contribution to journalArticlepeer-review

Abstract

BACKGROUND: We investigated the association between plant-based diets indices - an overall plant-based diet index; a healthful plant-based diet index; and an unhealthful plant-based diet index - and metabolic syndrome among Iranian older adults.

AIM: We aimed to examine the relationship between plant-based diet indices and metabolic syndrome.

METHODS: This cross-sectional study included 178 older adults (51 men and 127 women), with a mean age of 67.04 (60-83) who were referred to health centers in Tehran, Iran. Blood and urine samples were collected to measure serum total cholesterol, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, and triglycerides. We created an overall plant-based diet index, healthful plant-based diet index, and unhealthful plant-based diet index from semi-quantitative food-frequency questionnaire data. Anthropometric measures were done.

RESULTS: Our crude model results showed that triglycerides, systolic and diastolic blood pressure, fasting blood sugar, high-density lipoprotein cholesterol, and waist circumference did not significantly differ between tertiles of plant-based diet index and healthful plant-based diet index; also triglycerides, systolic and diastolic blood pressure, fasting blood sugar, and waist circumference did not significantly differ between tertiles of unhealthful plant-based diet index, but high-density lipoprotein cholesterol significantly differed between tertiles of unhealthful plant-based diet index. After adjusting for confounders the results remained non-significant for plant-based diet index but high-density lipoprotein cholesterol was significant for healthful and unhealthful plant-based diet indices. There was also no significant association between plant-based diet index (OR: 1.11; 95% CI: 0.53-2.33), healthful plant-based diet index (OR: 0.81; 95% CI: 0.39-1.68), and unhealthful plant-based diet index (OR: 0.81; 95% CI: 0.38-1.72) with metabolic syndrome, even after adjustment for confounders.

CONCLUSIONS: Our findings showed that plant-based diets are not significantly associated with risk of metabolic syndrome in older adults. To confirm the veracity of these findings, more studies should be conducted.

Original languageEnglish
Pages (from-to)(In-press)
JournalNutrition and Health
Volume(In-press)
Early online date24 Feb 2021
DOIs
Publication statusE-pub ahead of print - 24 Feb 2021

Keywords

  • Plant-based diet index
  • healthful plant-based diet
  • unhealthful plant-based diet
  • metabolic syndrome
  • older adults

ASJC Scopus subject areas

  • Nutrition and Dietetics
  • Medicine (miscellaneous)

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