Diet-dependent net endogenous acid load of vegan diets in relation to food groups and bone health-related nutrients: Results from the German Vegan Study

Alexander Ströhle*, Annika Waldmann, Jochen Koschizke, Claus Leitzmann, Andreas Hahn

*Corresponding author for this work
17 Citations (Scopus)

Abstract

Background/Aims:Dietary composition has been shown to affect acid-base homeostasis and bone health in humans. We investigated the potential renal acid load (PRAL) and the estimated diet-dependent net acid load (net endogenous acid production, NEAP) in adult vegans and evaluated the relationships between NEAP, food groups and intake of bone health-related nutrients. Methods: The German Vegan Study (GVS) is a cross-sectional study. Data from healthy men (n = 67) and women (n = 87), aged 21-75 years, who fulfilled the study criteria (vegan diet for ≥1 year prior to study start; age ≥18 years, and no pregnancy/childbirth during the last 12 months) were included in the analysis. NEAP values were calculated from diet composition using two models: one based on the protein/potassium quotient and another taking into account an anthropometry-based loss of urinary organic anions. Results:Mean daily intakes of phosphorus, potassium, sodium, magnesium and vitamin C were above, and vitamin D and calcium below Dietary Reference Intake (DRI). Regardless of the model used, the diet in the GVS was characterized by a nearly neutral NEAP. A strong correlation was observed between the NEAP values of the two models (r s = 0.873, p < 0.001). Only the consumption of fruits decreased constantly across the increasing quartiles of NEAP. Conclusions: It can be hypothesized that vegan diets do not affect acid-base homeostasis. With respect to bone health, the significance of this finding needs further investigation.

Original languageEnglish
JournalAnnals of Nutrition and Metabolism
Volume59
Issue number2-4
Pages (from-to)117-126
Number of pages10
ISSN0250-6807
DOIs
Publication statusPublished - 12.2011

Research Areas and Centers

  • Research Area: Center for Population Medicine and Public Health (ZBV)

DFG Research Classification Scheme

  • 205-02 Public Health, Health Services Research and Social Medicine
  • 205-05 Nutritional Science, Nutritional Medicine

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