The Claim
Supplementation with 300 mL/day of watermelon juice concentrate for 16 days increases resting systolic blood pressure by approximately 6 mmHg in healthy recreationally-active adult males compared to a control condition, despite increasing nitric oxide biomarkers.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Drinking 300 mL of watermelon juice concentrate daily for 16 days raises resting systolic blood pressure by about 6 mmHg in healthy, active adult men, even though it also raises markers of nitric oxide in the blood.
See the scientific wording
Supplementation with 300 mL/day of watermelon juice concentrate for 16 days increases resting systolic blood pressure by approximately 6 mmHg in healthy recreationally-active adult males compared to a control condition, despite increasing nitric oxide biomarkers.
The body absorbs L-citrulline from watermelon juice, converts it to arginine, and uses it to make large amounts of nitric oxide. This excess nitric oxide overactivates blood vessel relaxation, causing the body to respond by tightening blood vessels elsewhere to maintain pressure, which raises resting systolic blood pressure.
What the research says
1 studyDrinking this special watermelon juice for two weeks made healthy men’s blood pressure go up by about 6 points, even though their bodies made more of a chemical that usually lowers blood pressure. So yes, it happened — just like the claim said.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.