4.0 Article

Correlations among vitamin K intake, body fat, lipid profile and glucose homeostasis in adults and the elderly

Journal

ARCHIVES OF ENDOCRINOLOGY METABOLISM
Volume 64, Issue 4, Pages 436-444

Publisher

SBEM-SOC BRASIL ENDOCRINOLOGIA & METABOLOGIA
DOI: 10.20945/2359-3997000000230

Keywords

Vitamin K intake; phylloquinone; body fat; lipid profile; glucose homeostasis

Funding

  1. National Council for Scientific and Technological Development (CNPq) [153369/2016-7]
  2. Sao Paulo State Foundation for Research Support [Fapesp 2012-22113-9]
  3. State Secretariat of Health of Sao Paulo [2013-0.235.936.0]
  4. Fapesp [15/07971-7]
  5. National Council for Scientific and Technological Development [CNPq 402674/2016-2]
  6. Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [15/07971-7] Funding Source: FAPESP

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Objective: Recent research has investigated the possible inverse relationship between vitamin K intake and body fat. In addition, an increasing number of studies are supporting a key role for this vitamin in improving lipid profile and insulin sensitivity and reducing the risk of type 2 diabetes mellitus, but little is known about what mechanisms would be involved. Thus, the objective of this study was to investigate the relationship between vitamin K intake (in the form of phylloquinone - PK), body fat, lipid profile and markers of glucose homeostasis in adults and the elderly. Subjects and methods: A cross-sectional study with 298 participants (46% men) in the Sao Paulo Health Survey 2014-2015. Spearman correlations were performed to evaluate the associations between vitamin K intake and the biochemical and body composition measures. Results: Among normal-weight male adults (n = 15), PK intake presented a positive correlation with the quantitative insulin sensitivity check index (QUICKI) (r = 0.525; p = 0.045). Among men with high fat mass index (FMI) (n = 101), PK intake had a negative correlation with homeostasis model assessment estimate for beta-cell function (HOMA-beta) (r = -0.227; p = 0.022). In women with high FMI (n = 122), PK intake had a negative correlation with HOMA-beta (r = -0.199, p = 0.032) and insulin (r = -0.207, p = 0.026). No correlations were found between PK intake and lipid profile. Conclusions: Our findings support a potential relationship among PK intake, body fat and markers of glucose homeostasis in adults and the elderly.

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