Scientists found that daily orange juice consumption changes the activity of thousands of immune-cell genes.
Many of these genes regulate blood pressure, control sugar metabolism, and reduce inflammation.
These mechanisms play a crucial role in maintaining long-term cardiovascular health.
David C. Gaze of the University of Westminster explained that orange juice produces measurable effects on the body.
Reduced Inflammation and Improved Blood Pressure
Researchers gave adults 500 ml of pasteurised orange juice daily for two months.
After 60 days, genes linked to inflammation, including NAMPT, IL6, IL1B, and NLRP3, showed lower activity.
The SGK1 gene, which influences kidney sodium retention, also became less active.
Scientists conclude that orange juice relaxes blood vessels, eases inflammation, and protects heart health.
Hesperidin, an antioxidant flavonoid in oranges, influences blood pressure, cholesterol, and sugar metabolism.
Body type affects results: overweight participants show stronger changes in fat-metabolism genes, while leaner individuals see greater reductions in inflammation-related genes.
Heart and Metabolic Benefits
Analysis of 15 studies with 639 participants shows orange juice lowers insulin resistance and LDL cholesterol.
In overweight participants, daily intake slightly reduced systolic blood pressure and raised HDL cholesterol.
Orange juice also affects energy use, cell communication, and inflammatory pathways.
Volunteers who drank blood orange juice increased gut bacteria producing short-chain fatty acids, supporting healthy blood pressure and reducing inflammation.
Studies of metabolic syndrome patients show orange juice improves endothelial function, helping vessels relax and reducing heart-attack risk.
Even small changes from orange juice can improve heart health over time.
A Brazilian factory study found workers had lower apo-B, a marker linked to cholesterol particles that raise heart-attack risk.
