The Claim

Higher levels of C-reactive protein are associated with increased loneliness in older adults aged 65 and older over time, and higher levels of loneliness are associated with subsequent increases in C-reactive protein, indicating a reciprocal association between inflammation and subjective social isolation in this population.

Source: The reciprocal associations between social deficits, social engagement, and inflammation: Longitudinal evidence comparing venous blood samples and dried blood spots and mapping the modifying role of phenotypic and genotypic depression.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
52score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Correlation
1 study reviewed
In plain English

In adults aged 65 and older, higher levels of a blood marker for inflammation (C-reactive protein) are linked to greater feelings of loneliness, and higher loneliness is also linked to later increases in this inflammation marker, suggesting a two-way relationship between these factors.

See the scientific wording

Higher levels of C-reactive protein (CRP), a marker of chronic inflammation, are associated with increased loneliness in older adults over time, and higher loneliness is also associated with subsequent increases in CRP, suggesting a reciprocal relationship between inflammation and subjective social isolation in individuals aged 65 and older.

Why this might work

When there's more inflammation in the body over time, it affects the brain in ways that make people feel more alone, and feeling more alone then makes the body produce even more inflammation, creating a cycle.

Supported mechanismbased on 1 study

What the research says

1 study

  1. Study: The reciprocal associations between social deficits, social engagement, and inflammation: Longitudinal evidence comparing venous blood samples and dried blood spots and mapping the modifying role of phenotypic and genotypic depression.

    The study found that when older adults feel lonelier, their body’s inflammation levels go up, and when inflammation goes up, they tend to feel lonelier later — it’s a two-way street.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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