# Do Walnuts Have Lectins? The Answer May Surprise You!

## Do Walnuts Contain Lectins?

- Research indicates that lectins are present in walnut leaves but not in walnut kernels or shells.  
- Multiple studies tested walnut kernels for lectin activity across different blood types (A, B, AB, O) and found no lectin activity.

## Are Walnuts High or Low in Lectins?

- Based on available research, walnut kernels are not high in lectins.  
- The absence of lectin activity in testing suggests walnuts are a low lectin food.  
- While lectins were detected in leaves, these are not typically consumed.

## Limitations in Testing for Lectins in Walnuts

- Variability in lectin quantities may depend on factors like walnut variety.  
- The studies referenced tested Juglans regia (common walnut, English walnut, or Persian walnut). Other varieties might differ.
- Note that some testing methods may not detect all types of lectins, or only detect lectins above certain thresholds.  

## Common Types of Walnuts  

- **Juglans regia**: Commonly researched walnut variety.  
- **Black walnuts (Juglans nigra)**: Known for their bolder, earthy flavor.  
- **White walnuts (Juglans cinerea):** Also called butternuts, sweeter in flavor.    
- **Heartnuts (Juglans ailanthifolia var. cordiformis):** Japanese walnuts with a distinct heart-shaped shell.
- California walnuts dominate the U.S. market, with varieties like Chandler, Hartley, and Tulare.

## Should You Eat Walnuts?  

- Walnuts are regarded as nutritious, high-calorie foods due to their fat content, but they also provide proteins, fibers, and low carbohydrate levels.  
- They are rich in vitamins (e.g., Vitamin B1, B2) and minerals such as Magnesium, Copper, and Manganese.  
- Walnuts may have an alkalizing effect due to minerals like calcium and potassium.   

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