Myth-buster
Chia seeds linked to a small drop in 'good' HDL cholesterol in meta-analysis, though other markers improved
This meta-analysis found a modest but statistically significant reduction in HDL cholesterol with chia seed supplementation, but the overall evidence is moderate to low quality and the effect is very small.
HDL cholesterol is often called 'good' cholesterol because it helps remove other forms of cholesterol from your bloodstream. The study observed a tiny decrease in HDL (effect size -0.093) among people taking chia seeds, but also found improvements in blood pressure, LDL cholesterol, and inflammation markers. Because the evidence strength is limited, this finding should be interpreted cautiously.
Where this fits in the evidence
This is among the first studies we've indexed on chia seed for Increased HDL Cholesterol Levels — treat it as an early signal until more research accumulates.
The study
A Critical Review of the Health Benefits Associated with Chia Seeds (Salvia Hispanica L.).
- Meta-Analysis
- n = 500
- 2025-10-12
- Plant foods for human nutrition (Dordrecht, Netherlands)
This is a plain-language summary of a research finding, not medical advice. Pillser surfaces research signals to help you decide what's worth investigating — always consult a qualified professional before changing what you take.