If people with metabolic syndrome don't lose weight while eating more walnuts or cashews, they might not see improvements in their cholesterol or inflammation—even if the nuts could help.

If you have metabolic syndrome and eat a lot of walnuts or cashews every day for two months without losing weight, it probably won't improve your cholesterol, blood pressure, or other key health numbers much.

If you're overweight and have metabolic health issues, eating walnuts or cashews for 8 weeks might help your body, but if you don't lose weight, those benefits could be hidden.

If you're an obese adult with metabolic syndrome, eating a handful of walnuts or cashews every day for two months won't noticeably improve your cholesterol, blood pressure, or inflammation—if you don't gain or lose weight.

If you're overweight, eating walnuts might help lower your bad cholesterol and fats in your blood more than if you're at a normal weight.

Eating walnuts might help lower bad fats in the blood for adults with metabolic syndrome, which could be good for heart health.