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Long-term fish intake preserves kidney function in elderly individuals: the Ikaria study
Christina Chrysohoou1, Christos Pitsavos, Demosthenes Panagiotakos
1First Cardiology Clinic, Hippokration Hospital, Medical School, University of Athens, Athens, Greece. chrysohoou@usa.net
Summary
Elderly individuals who consume fish regularly show improved kidney function. This study highlights the health benefits of fish intake for kidney health in older adults.
Area of Science:
- Gerontology
- Nephrology
- Nutritional Science
Background:
- Ikaria Island is known for the longevity of its inhabitants.
- Dietary habits, particularly fish consumption, may influence health outcomes in the elderly.
Purpose of the Study:
- To investigate the association between weekly fish intake and kidney function.
- To assess kidney function using creatinine clearance (CCr) rate in elderly individuals on Ikaria Island.
Main Methods:
- A cohort of 673 elderly residents (65-100 years) on Ikaria Island was studied.
- Nutritional habits were assessed using a food questionnaire and the MedDietScore.
- Kidney function was evaluated by measuring creatinine and estimating CCr using the Cockcroft-Gault formula.
Main Results:
- Eighty-four percent of participants consumed over 150 g of fish weekly.
- Fish intake showed a positive correlation with CCr in crude and adjusted analyses.
- Consuming 100 g of fish daily increased the likelihood of CCr > 60 mL by 121%.
Conclusions:
- Long-term fish consumption is independently linked to better kidney function in the elderly.
- This finding supports the health benefits of fish intake for maintaining kidney health in aging populations.
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