Cashews and Blood Sugar: What the Research Shows

Yes, people with diabetes can eat cashews, but portion size matters more than the cashew itself. Cashews are lower in carbohydrates than many other nuts and contain fiber, which slows how quickly sugar enters your bloodstream. A one-ounce serving (about 23 cashews) has roughly 9 grams of carbohydrates, 5 grams of fat, and 1 gram of fiber.

The main concern with cashews is not the nut itself but how straightforward it is to eat too many. Because cashews are soft and taste slightly sweet, people often consume them by the handful without measuring. Eating a cup of cashews instead of an ounce can spike your blood sugar and add hundreds of calories to your day. If you eat cashews regularly, weighing them on a food scale or counting them out is more reliable than eyeballing a portion.

Cashews also contain compounds called polyphenols that may help reduce inflammation and improve how your body handles insulin, though research in humans is still limited. The fat in cashews is mostly unsaturated fat, which does not raise cholesterol the way saturated fat does.

Key Takeaways

  • One ounce of cashews (about 23 nuts) contains roughly 9 grams of carbohydrates and is unlikely to cause a significant blood sugar spike on its own.
  • Cashews are easier to overeat than harder nuts because they are soft and slightly sweet, so measuring portions with a scale or counting them prevents accidental overconsumption.
  • Pairing cashews with protein or fat — such as cheese or a hard-boiled egg — slows carbohydrate absorption and keeps blood sugar more stable.
  • Roasted and salted cashews are fine; avoid honey-roasted or heavily sweetened varieties, which add sugar without adding nutrition.
  • If cashews cause your blood sugar to rise more than expected, track this in your food and glucose log so you and your doctor can adjust your meal plan.

How Cashews Compare to Other Nuts

Cashews have fewer carbohydrates than raisins, dried cranberries, or pistachios, but slightly more than almonds or macadamia nuts. One ounce of almonds contains about 6 grams of carbohydrates, while the same amount of pistachios contains about 8 grams. This difference is small enough that the choice between them should depend on which nut you enjoy and can stick to in measured portions.

What matters more than the type of nut is eating a measured amount. A person with diabetes who eats two ounces of almonds (12 grams of carbs) will see a larger blood sugar change than someone eating one ounce of cashews (9 grams of carbs). Consistency and portion control matter more than picking the "perfect" nut.

Pairing Cashews With Other Foods

Eating cashews with protein or fat slows how quickly carbohydrates enter your bloodstream. A small handful of cashews paired with a piece of cheese, a hard-boiled egg, or a tablespoon of peanut butter creates a more balanced snack than cashews alone. This combination keeps your blood sugar steadier and helps you feel full longer.

Avoid pairing cashews with other high-carbohydrate foods — such as dried fruit, crackers, or sweetened yogurt — unless you have already accounted for those carbohydrates in your meal plan. If you are counting carbohydrates as part of managing your diabetes, add up the total from all foods in the snack, not just the cashews.

What to Watch For When Buying Cashews

Raw, roasted, or dry-roasted cashews are all acceptable. The difference between them is minimal for blood sugar purposes. Salted cashews are fine as long as you are not on a sodium-restricted diet for heart health or high blood pressure.

Avoid honey-roasted, cinnamon-sugar, or other sweetened varieties. These add 2 to 5 grams of sugar per ounce without adding fiber or other nutrients. If you like a bit of flavor, buy plain roasted cashews and add your own salt or spices at home, where you control the amount.

Cashew butter is also acceptable in small amounts — one tablespoon contains about 4 grams of carbohydrates — but it is straightforward to use more than you intend because it spreads. Measure cashew butter with a spoon rather than spreading it directly from the jar.

Tracking Your Personal Response

Everyone's blood sugar responds differently to the same food. Some people with diabetes can eat one ounce of cashews with no noticeable change in blood glucose; others see a small rise. The only way to know how cashews affect you is to test your blood sugar before eating them and again two hours afterward.

If you use a continuous glucose monitor, you can see the pattern over several days. If you check blood sugar with a meter, test on different days and at different times to get a clearer picture. Write down the amount of cashews you ate, what you ate them with, and what your blood sugar was before and after. Bring this log to your next appointment with your doctor or diabetes educator so they can help you decide whether cashews fit into your meal plan.

If cashews consistently raise your blood sugar more than you expect, you may need to eat smaller portions, pair them with more protein, or choose a different snack. This is not a failure — it straightforward means your body processes cashews differently than someone else's does.

When to Talk to Your Doctor

Mention cashews or any nut you eat regularly to your doctor or registered dietitian, especially if you take insulin or diabetes medications that lower blood sugar. They can help you figure out whether cashews fit into your carbohydrate targets and whether you need to adjust your medication timing around eating them.

If you have a history of pancreatitis, kidney disease, or heart disease, ask your doctor before adding nuts to your diet. While cashews are nutritious for most people with diabetes, certain medical conditions may require different dietary choices. Your doctor can tell you whether cashews are safe for your specific situation.

Frequently Asked Questions

How many cashews can I eat in a day?

One ounce (about 23 cashews) per day is a reasonable amount for most people with diabetes, as long as you have accounted for the carbohydrates in your meal plan. Some people can tolerate two ounces; others do better with less. Test your blood sugar response and adjust based on what you find.

Are raw cashews better than roasted ones for diabetes?

No. Raw and roasted cashews have nearly identical carbohydrate and fiber content. Choose whichever you prefer. Roasting does not significantly change the nutritional profile or how your body processes the carbohydrates.

Can I eat cashew butter instead of whole cashews?

Yes, but measure it carefully. One tablespoon of cashew butter contains about 4 grams of carbohydrates. Because butter is straightforward to use more of than intended, using a spoon to measure is more reliable than spreading from the jar. Pair it with protein or fat to slow carbohydrate absorption.

What if my blood sugar spikes after eating cashews?

Try eating a smaller portion, pairing cashews with protein or fat, or testing again on a different day to see if the spike was consistent. If cashews regularly cause a larger blood sugar rise than you expect, mention this to your doctor. You may need to adjust your portion size or choose a different snack.

Are salted cashews okay for people with diabetes?

Salted cashews are fine unless your doctor has told you to limit sodium for high blood pressure or heart disease. The salt does not affect blood sugar. If you are concerned about sodium, unsalted or lightly salted varieties are available.