Evidence-based nutrition, in plain English — every entry sourced from clinical research.

Dietary nitrate from leafy greens and beetroot underlies their well-replicated effects on blood pressure and endurance performance.

What is Nitrates?

Nitrates is a Dietary nitrate that plays a critical role in serving as a dietary reservoir for nitric oxide. While many general diets overlook it, maintaining optimal levels of Nitrates is frequently tracked by people working to optimize their Blood pressure.

Top Foods High in Nitrates

A data-driven breakdown of the foods with the highest concentration of Nitrates per 100 g.

Highest dietary sources of Nitrates, per 100 g edible portion
FoodNitrates
Spinach740 mg
Beetroot250 mg
Kale130 mg

How Nitrates Impacts Blood pressure

Research links diets rich in Nitrates to changes in Blood pressure. Diets naturally abundant in this compound often support lower Blood pressure markers by conversion to nitric oxide, which relaxes and widens blood vessels.

Encyclopedia Insight: For maximum absorption, pair Nitrates-rich foods with avoiding antibacterial mouthwash, which blocks the mouth bacteria that start the conversion to optimize bioavailability.

Scientific references & clinical evidence

This guide is built on peer-reviewed research — verify the primary sources below.

  1. Sports medicine (Auckland, N.Z.) (2025). “Dietary Nitrate Supplementation and Exercise Performance: An Umbrella Review of 20 Published Systematic Reviews with Meta-analyses”. PubMed / source ↗
  2. Advances in Nutrition (2017). “Effects of Beetroot Juice on Blood Pressure: A Systematic Review”. PubMed / source ↗

Written by the Nutrition Encyclopedia team · medically reviewed by Dr. Sunaina Tariq, MBBS

Last updated 21 June 2026

Nutrition values are approximations compiled from public food-composition databases (USDA FoodData Central) and are provided for educational purposes only — not medical advice.

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