Unveiling the Connection: Liver Health, Inflammation, and Mood in the Golden Years
As we age, maintaining both physical and mental health becomes increasingly important. A recent study has shed light on the intriguing connection between liver health, inflammation, and mood in older adults. The study focused on markers of inflammation and liver function, which are known to increase with age and are also associated with symptoms of depression.
The study analyzed data from 284 healthy older adults, aged 60-75, as part of the Australian Research Council Longevity Intervention (ARCLI). The researchers looked at mood symptoms and measured levels of inflammatory markers and liver enzymes in blood samples. The results revealed a significant relationship between these markers and mood symptoms. Specifically, higher levels of C-reactive protein (CRP), an inflammation marker, were associated with negative mood scores, but only when levels of gamma-glutamyl transferase (GGT), a liver enzyme, were also high.
Interestingly, these relationships were observed in healthy older adults who were experiencing the biological impact of aging but did not have clinical depression symptoms. This suggests that oxidative stress or other biological mechanisms that occur with aging might play a role in the development of depression. The findings highlight the importance of lifestyle interventions in promoting both physical and mental health as we age.
Article Information
Liver and inflammatory biomarker relationships to depression symptoms in healthy older adults.
Published in Experimental Gerontology. Karen Savage et al.
Abstract
Introduction: Early identification and management of physical and mental illness is vital to maintain quality of life as we age. Markers of peripheral inflammation and liver function show elevations with aging, and are also associated with depression symptoms, suggesting a similar pattern in both aging and clinical groups.
Methods: The current study examined the relationship between such markers and measures of depression/negative mood in 284 healthy older adults using data from the Australian Research Council Longevity Intervention (ARCLI). Baseline data in adults aged 60-75 included mood symptoms via Profile of Mood States and Beck Depression Inventory II, and peripheral inflammatory (TNF-α, IL-6, hs-CRP) and liver markers (GGT, ALT, AST, AST:ALT ratio) derived from blood samples.
Results: The inflammation and liver enzyme relationship significantly predicted mood symptoms scores. Results showed that a significant relationship between C-reactive protein (CRP) and negative mood scores on Total Mood Disturbance and four of the six subscales (all p < .01) was dependent upon higher levels of gamma-glutamyl transferase (GGT).
Discussion: Higher levels of normal-range liver metabolic and peripheral inflammatory markers are observed with negative mood in a healthy older sample experiencing the biological impact of aging, but in the absence of clinical depression symptoms, suggesting a possible role of oxidative stress or other biological mechanisms occurring with aging in depression etiology. Lifestyle interventions are discussed.
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