Walnuts have a wealth of nutrients, like omega-3 fats, vitamin E, and magnesium, which contribute to their health benefits:

1. Walnuts Promote a Healthy Gut

Walnuts nourish the good bacteria in your gut. Having a healthy gut reduces your risk for disease.

Researchers found that adults who ate 1.5 oz of walnuts daily for 8 weeks had significantly increased beneficial bacteria in the gut

2. Walnuts Support Good Brain Function

Walnuts are known to contain many nutrients and micronutrients associated with improved motor and cognitive functions as well as better memory. These nutrients may also help in reducing inflammation and damage to the brain.

Several studies suggest that walnuts are good for your brain and memory. One study found that walnuts significantly improved learning skills, memory, and anxiety in mice when studying Alzheimer’s disease.

3. Walnuts Promote Healthy Aging

Walnuts are packed with healthy nutrients that improve your brain and help you age well.

An observational study of over 50,000 older women showed that those with the healthiest diets had a 13% lower risk of health issues, and walnuts were among the foods that made the strongest contribution to a healthy diet. 

4. Walnuts Support a Healthy Heart

While high levels of cholesterol and triglycerides are shown to increase one’s risk for heart disease, walnuts have consistently been shown to decrease both in the body.

A study found that diets containing a high amount of walnuts lowered cholesterol levels as opposed to reduced-calorie diets Other studies promote walnuts in heart-healthy diets for the wealth of polyunsaturated fats.

5. Walnuts May Help Lower Blood Pressure

The same study that found walnuts to lower cholesterol levels also found diets rich in walnuts to lower systolic blood pressure.

Similarly, another study found that adults who partook of a nut-rich diet had a decrease in diastolic blood pressure as opposed to adults who were not given nuts and had a lesser decrease. 

6. Walnuts Are a Rich Source of Antioxidants and Omega-3s

Walnuts have significantly more healthy omega-3s and antioxidant activity than any other nut. This comes from the slightly papery skin of walnuts which contains melatonin, polyphenols, and vitamin E.

Omega-3 is an essential fat, and when it comes from plants, it’s called alpha-linolenic acid (ALA). A single serving of walnuts meets the adequate daily intake of ALA, according to the Institute of Medicine. Studies have shown that daily intake of ALA lowers the risk of dying from heart disease by 10%.

7. Walnuts May Decrease Inflammation

All nuts have anti-inflammatory properties, but walnuts are considered to be more effective than other nuts.

The nutrients in walnuts, such as arginine, ALA Omega-3 fat, ellagic acid, and magnesium all boast anti-inflammatory properties.¹⁴ These nutrients work together to reduce the inflammation oxidative stress causes.

8. Walnuts Support Male Reproductive Health

Eating walnuts may help support sperm health and male fertility.

A study on fertility in animals suggested that eating walnuts protected the sperm in males by lowering oxidative damage in the membranes. When this was studied in humans, the men that included walnuts in their diet had improved mobility, sperm shape, and vitality when compared to men not eating the nuts

9. Walnuts May Reduce the Risk of Some Cancers

Due to the many antioxidants and anti-inflammatory nutrients found in walnuts, the scientific community has discovered that walnuts may reduce the risk of some cancers, including breast, colorectal, and prostate.

The antioxidant nutrients in walnuts lower the risk of chronic oxidative stress, while the anti-inflammatory nutrients in walnuts lower the risk of chronic inflammation. When combined, the two highest proponents of cancer development have significantly lower occurrences. 

10. Walnuts Support Weight Control

Multiple studies have concluded that nut consumption helps with better weight management and lower body fat. Additionally, multiple studies partially funded by the California Walnut Commission have established that walnuts specifically help you to reach and maintain a healthy weight.

Besides all the other nutrients, walnuts contain fiber and protein, both of which help you feel full longer and can help curb your appetite. 

A study had the individuals drink smoothies made with walnuts each day for five days. Not only did the walnuts decrease the participants’ appetite and hunger, but brain scans showed heightened activity in an area of the brain that helps resist tempting unhealthy foods.

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