The effect of polyunsaturated fatty acids on bone health

Marcello Maggio, Andrea Artoni, Fulvio Lauretani, Carmelinda Ruggiero, Tommy Cederholm, Antonio Cherubini, Gian Paolo Ceda

Research output: Contribution to journalArticlepeer-review

Abstract

The essential polyunsaturated fatty acids (PUFAs) are divided into two classes, n-3 (ω-3) and n-6 (ω-6) and their dietary precursors are α-linolenic (ALA) and linoleic acid (LA), respectively. PUFAs are precursors of a wide range of metabolites, for example eicosanoids like prostaglandins and leukotrienes, which play critical roles in the regulation of a variety of biological processes, including bone metabolism. A large body of evidence supports an effect of PUFA on bone metabolism which may be mediated by regulation of osteoblastogenesis and osteoclast activity, change of membrane function, decrease in inflammatory cytokines, such as interleukin-1 (IL-1), interleukin-6 (IL-6), and tumour necrosis factor alpha (TNF-α), modulation of peroxisome proliferators-activated receptor γ; (PPARγ;) and influence in NO secretion and NO synthase. Animal studies have shown that a higher dietary omega-3/omega-6 fatty acids ratio is associated with beneficial effects on bone health. Human studies conducted in elderly subjects suggest that omega-3 instead of omega-6 has a positive effect on bone metabolism. In spite of increasing evidence, studies conducted in humans do not allow us to draw a definitive conclusion on the usefulness of PUFAs in clinical practice.

Original languageEnglish
Pages (from-to)219-232
Number of pages14
JournalReviews in Clinical Gerontology
Volume21
Issue number3
DOIs
Publication statusPublished - Aug 2011

Keywords

  • bone health
  • elderly
  • polyunsaturated fatty acids

ASJC Scopus subject areas

  • Geriatrics and Gerontology
  • Gerontology

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