Spinach showdown: does how It's grown affect your blood pressure?

NCT ID NCT07665944

Recruiting now Knowledge-focused Sponsor: University of Plymouth Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether smoothies made from hydroponically grown spinach affect nitrate levels in saliva and blood pressure differently than those made from conventionally grown spinach. Twelve healthy adults will drink both types of smoothies on separate days, with measurements taken before and after. The goal is to see if the growing method changes the health benefits.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: Spinach smoothie (hydroponically or conventionally grown)
What this could lead to: If it works, this could show that hydroponic spinach provides similar or better nitrate benefits than conventional spinach, potentially guiding healthier food choices.
What could go wrong: This is a very small (12 participants), early-stage trial measuring short-term effects only. Results may not apply to the general population or long-term health.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

ADULT

Contacts and locations

Locations

University of Plymouth
RECRUITING

Plymouth, Devon, PL4 6AB, United Kingdom

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