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Impact of Vitamin D Carotenoids and Fatty Acids on Coronary Heart Disease RiskHigher levels of vitamin D and carotenoids linked to lower heart risk

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Key Takeaway
Higher vitamin D and carotenoids are associated with lower coronary heart disease risk, while palmitic acid shows a positive association.

This meta-analysis evaluated the relationship between circulating nutrients and the risk of coronary heart disease (CHD). The analysis focused on vitamin D, carotenoids, and specific fatty acids to determine their associations with cardiovascular outcomes.

Findings indicate that higher circulating 25(OH)D levels were inversely associated with CHD risk (HR 0.79). Similarly, higher carotenoid levels showed a significant inverse association with coronary heart disease (OR 0.64). These results suggest a protective role for these specific micronutrients.

Regarding fatty acids, a one-standard-deviation increase in linoleic acid was associated with a lower risk of CHD (OR 0.69). Conversely, higher levels of palmitic acid and dihomo-gamma-linolenic acid (DGLA) were associated with an increased risk of coronary heart disease.

While these associations are statistically significant, the study notes that sparse data limit the ability to perform robust dose-response analyses. These findings do not establish causality or provide a basis for specific supplementation protocols, requiring further prospective research.

Heart health often comes down to what we put in our bodies and what circulates in our blood. A recent analysis looked at how specific nutrients and fatty acids relate to coronary heart disease. The findings suggest that higher levels of vitamin D and carotenoids are associated with a lower risk of heart issues.

The study also looked at different types of fats. It found that higher levels of linoleic acid were linked to lower heart risk, while higher levels of palmitic acid and dihomo-gamma-linolenic acid were linked to a higher risk. These findings help map out how different nutrients might interact with our cardiovascular health.

It is important to remember that these results show a connection, not a direct cause. Because the data used for some of these findings were limited, more research is needed to confirm these patterns. These results do not mean you should start new supplements without talking to your doctor first.

What this means for you:
Higher levels of vitamin D and carotenoids are linked to lower coronary heart disease risk.

Common questions

Does vitamin D help with heart health?

The analysis found that higher circulating levels of vitamin D were associated with a lower risk of coronary heart disease. However, these results show a connection rather than a direct cause, and more research is needed to confirm these findings.

What role do carotenoids play in heart health?

Higher levels of carotenoids were associated with a lower risk of coronary heart disease. Because the data for some of these findings were sparse, scientists still need more studies to confirm these results fully.

Are all fatty acids the same for heart health?

No, different fatty acids showed different results. Higher linoleic acid was linked to lower heart risk, while higher levels of palmitic acid and dihomo-gamma-linolenic acid were linked to a higher risk of coronary heart disease.

Study Details

Study typeMeta analysis
EvidenceLevel 1
PublishedOct 2026
View Original Abstract ↓
BackgroundAssociations between vitamin, antioxidant, and fatty acid exposure and coronary heart disease (CHD) risk remain uncertain, and dose–response relationships are poorly defined. This study aimed to evaluate the overall and dose–response associations between dietary and circulating vitamin, antioxidant, and fatty acid levels and CHD risk from observational evidence.MethodsPubMed, Web of Science, Embase, and the Cochrane Library were searched for studies published up to February 2, 2026 (PROSPERO: CRD420261380823). Eligible observational studies (case–control, cohort, cross-sectional) reporting associations between vitamin, antioxidant, or fatty acid levels and CHD risk were included. A total of 27 studies were analyzed. Categorical (highest vs. lowest) and dose–response analyses were performed, estimating pooled odds ratios (ORs), relative risks (RRs), and hazard ratios (HRs).ResultsTwenty-seven observational studies were included. In categorical analyses, higher circulating 25(OH)D (pooled HR = 0.79, 95% CI = 0.74–0.85; I2 = 1.4%, τ2 = 0.0000) and carotenoids (pooled OR = 0.64, 95% CI = 0.46–0.91; I2 = 0.0%, τ2 = 0.0000) were inversely associated with CHD risk. In analyses per 1-SD increase in circulating fatty acid levels, linoleic acid was inversely associated with CHD risk (pooled OR = 0.69, 95% CI = 0.57–0.84; I2 = 0.0%, τ2 = 0.0000), whereas palmitic acid (pooled OR = 1.52, 95% CI = 1.23–1.89; I2 = 0.0%, τ2 = 0.0000) and dihomo-γ-linolenic acid (DGLA; pooled OR = 1.26, 95% CI = 1.05–1.52; I2 = 0.0%, τ2 = 0.0000) were positively associated with CHD risk. Several other exposure-specific estimates and most dose–response analyses were supported by only one or two studies and should therefore be interpreted cautiously.ConclusionIn observational studies, selected dietary and circulating vitamin, antioxidant, and fatty acid exposures were associated with CHD risk. These associations do not establish causality or justify specific supplementation recommendations, and findings based on sparse data require confirmation in additional prospective studies.
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