Health Claims

Eating a small or medium handful of raw walnuts might give older adults a quick boost in natural antioxidants that help protect their body's proteins from damage caused by stress and aging.

Eating a small handful of raw walnuts every day for six weeks might boost a key form of vitamin B6 in the blood of healthy older people, even if they're not eating more protein or other B6-rich foods.

If you're 50 or older and eat a small handful of raw walnuts every day for six weeks, it might help your body build up healthy fats in your blood cells — a sign that walnuts are getting into your cells and doing their job.

Eating walnuts probably doesn't change how your body responds to certain stimuli — a review of several studies found no real effect.

Eating walnuts doesn't seem to change levels of a protein linked to blood vessel inflammation in adults, according to a review of several studies.

Eating walnuts doesn't seem to change levels of a protein in the blood called ICAM-1, which is linked to inflammation, at least based on studies in adults.

Eating walnuts might help your blood vessels work better by improving blood flow, which could lower your risk of heart disease.

If older guys who already exercise eat a small handful of walnuts every day for six weeks, it might help lower their blood sugar more than just exercising alone.

If older guys who already exercise eat a small handful of walnuts every day for six weeks, it might lower a marker of body-wide inflammation by almost a third compared to just exercising.

If older guys who exercise eat a small handful of walnuts every day for six weeks, it might help lower their stress hormone levels more than exercise alone.

Older guys who work out might get a bigger boost in their testosterone if they eat a small handful of walnuts every day for six weeks, compared to working out without walnuts.

If older guys who already work out eat a small handful of walnuts every day for six weeks while keeping up their usual mix of strength and cardio workouts, their good cholesterol goes up and their bad cholesterol and fats in the blood go down—more than just exercise alone.

Eating 45 grams of walnuts every day for a month doesn’t seem to change blood sugar levels in middle-aged white adults who are at risk for metabolic problems, though there was a slight hint of blood sugar going up — but not enough to be sure.

Eating a handful of walnuts every day for a month doesn't seem to help improve cholesterol or other blood fats in middle-aged white adults who are at risk for metabolic syndrome.

Eating 45 grams of walnuts every day for a month doesn’t seem to change a specific marker in the blood linked to blood vessel inflammation — at least in middle-aged white adults who are at risk for metabolic syndrome.

Eating a small handful of walnuts every day for a month might help shrink your waist a little bit if you're a middle-aged white adult at risk for metabolic problems and not on medication.

Sprouting walnuts makes it easier for your body to absorb the good minerals by breaking down stuff in the nuts that normally blocks absorption.

Eating macadamia nuts doesn't really lower your bad cholesterol much, but walnuts do make a noticeable difference.

Eating walnuts helps your blood vessels work better by improving blood flow, and this benefit happens even if your cholesterol doesn't change.

Eating walnuts might help improve your cholesterol levels because they're packed with healthy fats.

Eating cashews might raise blood sugar levels in adults with metabolic syndrome because they have a fair amount of carbs.

Swapping out bad fats like butter or fried food fats with healthy fats from walnuts can help your liver make less cholesterol and clear more 'bad' cholesterol from your blood.

Eating walnuts might help lower body-wide inflammation and make your blood vessels work better by relaxing more easily.

Even though walnuts have a lot of unsaturated fats, they also have enough antioxidants to protect your 'bad' cholesterol from damage.