So the cashews you buy from reputable retailers are safe.

How Much Is Safe to Eat?

Most experts recommend about one ounce (28–30 grams) per day — roughly 18–20 cashews.

To maximize benefits:

• Choose unsalted varieties

• Avoid heavily salted or sugar-coated versions

• Watch portion sizes

The Bottom Line

Doctors do not warn that cashews are dangerous for the average person. In fact, research from major medical organizations suggests they may support heart health and blood sugar control.

However, eating cashews can cause problems if:

• You have a tree nut allergy

• You overeat them regularly

• You are prone to kidney stones

For most healthy adults, cashews are safe and beneficial when eaten in moderation.