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Eating Fruit Can Help Protect Against Late-Life Depression, Study Finds

by Ella

As global populations age, the risk of depression among the elderly is increasing, exacerbated by underlying neurodegenerative conditions and other age-related factors. Symptoms of depression in older adults often include anhedonia, reduced volition, cognitive fragility, loss of appetite, fatigue, and poor concentration.

Combatting Late-Life Depression Through Diet

In addition to medication, which can carry side effects, researchers have explored alternative approaches such as dietary interventions to mitigate late-life depression. Recent studies suggest that dietary habits established earlier in life may influence the onset of depression later on.

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Midlife Fruit Consumption Linked to Reduced Depression Risk

A team led by the National University of Singapore (NUS) examined data from the Singapore Chinese Health Study, involving 13,738 participants tracked from midlife into later years. Their findings indicate that individuals who consumed higher quantities of fruits during midlife experienced fewer depressive symptoms in later life.

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The study focused on 14 fruits commonly consumed in Singapore, including oranges, tangerines, bananas, watermelons, and papayas. It revealed a significant association between consistent fruit consumption in midlife and a reduced likelihood of developing depression later in life. Interestingly, vegetable consumption did not show the same correlation.

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Protective Role of Fruits Against Depression

Researchers attribute the protective effect of fruits against depression to their high levels of antioxidants and anti-inflammatory compounds such as flavonoids, carotenoids, and vitamin C.

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Principal investigator Koh Woon Puay emphasized the importance of fruit consumption in preventing aging-related depression. “Participants who consumed at least 3 servings of fruits a day showed a 21% lower likelihood of aging-related depression compared to those consuming less than one serving,” Koh noted. “Incorporating one to two servings of fruits after meals can achieve this benefit.”

The study also found no significant difference in depression risk between fruits with high and low glycemic index, offering flexibility for individuals managing conditions like diabetes.

Study Methodology and Scope

Participants initially reported their fruit and vegetable consumption habits between 1993 and 1998. Depressive symptoms were assessed using the Geriatric Depression Scale between 2014 and 2016, when participants were around 73 years old on average. The study highlighted that earlier fruit consumption, but not vegetable consumption, was linked to reduced depression risk later in life.

Unique Contribution and Further Research

Koh highlighted that while other studies have explored the link between diet and depression, this study is unique in its focus on an Asian population and its extensive scope. The findings underscore the potential of promoting fruit consumption in midlife as a feasible and effective strategy to prevent late-life depression.

Moving forward, researchers suggest investigating additional behavioral factors such as sleep, smoking, and other dietary patterns to further understand their impact on depression risk.

In conclusion, promoting a diet rich in fruits from an early age could significantly contribute to global public health efforts aimed at reducing the burden of late-life depression.

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