Is walnut acidic or alkaline?

Sep 13, 2025 Source: Cainiu Health

Dr. Yu Yongchao

Introduction

Under normal circumstances, walnuts are considered alkaline foods. When consuming walnuts, it is recommended to limit daily intake to 2-3 walnuts, as excessive consumption may easily lead to excessive calorie intake and increase the digestive burden. When selecting walnuts, priority should be given to those with intact shells and no signs of mold, as moldy walnuts may produce harmful substances that can affect health. In addition, walnuts should not be consumed in large quantities with strong tea at the same time.

Generally speaking, walnuts are considered alkaline-forming foods. The detailed analysis is as follows:

Walnuts contain relatively high amounts of minerals such as potassium, magnesium, and calcium. These elements produce alkaline substances after metabolism in the body; therefore, walnuts are classified as alkaline-forming foods. Although walnuts themselves contain certain amounts of fatty acids and proteins, the overall proportion of minerals is higher. After metabolism, they exhibit an overall alkaline characteristic, which is distinctly different from the metabolic products of common acidic foods (such as meat and grains).

When consuming walnuts, it is recommended to limit intake to 2-3 walnuts per day. Excessive consumption may easily lead to excessive calorie intake and increase the digestive burden. When selecting walnuts, priority should be given to those with intact shells and no signs of mold. Moldy walnuts may produce harmful substances that can affect health. Additionally, walnuts should not be consumed in large quantities together with strong tea, as the tannic acid in tea may bind with nutrients in walnuts, thereby reducing absorption efficiency.

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