Fruit and Vegetable Consumption and Frailty: A Systematic Review

Area of Science:

• Gerontology
• Nutritional Science
• Public Health

Background:

• Frailty is a growing concern in aging populations, impacting health outcomes.
• Dietary factors, particularly fruit and vegetable consumption, are potential modifiable risk factors for frailty.

Purpose of the Study:

• To systematically review and critically evaluate existing evidence on the association between fruit and vegetable consumption and frailty risk.
• To synthesize findings from observational studies to understand the current state of knowledge.

Main Methods:

• A systematic literature search was conducted across four databases (Embase, MEDLINE, CINAHL, PsycINFO) for observational cohort studies.
• Included studies examined associations between fruit and vegetable intake and frailty in community-dwelling populations.
• Methodological quality of prospective studies was assessed using the Newcastle-Ottawa scale.

Main Results:

• Seven observational studies (five prospective, two cross-sectional) were included.
• Due to heterogeneity, a meta-analysis was not feasible.
• Good quality prospective studies indicated that higher fruit and vegetable consumption was generally associated with a lower risk of incident frailty.

Conclusions:

• Current evidence, though limited by study quality and quantity, suggests a potential protective association between higher fruit and vegetable intake and reduced frailty risk.
• Further high-quality research is essential to solidify these findings and inform public health recommendations.