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Blueberries are not particularly high in magnesium.
That might come as a surprise if you’ve been told that blueberries are a top-tier magnesium fruit.
While blueberries do contain magnesium, the amount is modest compared to foods like spinach, almonds, or pumpkin seeds.
So, are blueberries high in magnesium?
The honest answer is no — but they still offer a small, helpful contribution to your daily magnesium intake.
In this post, we’ll look at how much magnesium blueberries actually have, why that matters, and how they fit into a magnesium-rich diet.
Let’s dig in.
How Much Magnesium Do Blueberries Have?
Blueberries contain a small but real amount of magnesium, and that amount depends on whether you’re eating them fresh, frozen, or dried.
Here’s what the numbers look like:
1. Fresh Blueberries Magnesium Content
One cup of fresh blueberries (about 148 grams) provides roughly 9 milligrams of magnesium.
That’s about 2% of the daily value for most adults.
So while blueberries are not high in magnesium, they’re not empty either — every little bit adds up over the day.
2. Frozen Blueberries Magnesium Content
Frozen blueberries are picked and frozen at peak ripeness, so their magnesium content stays close to fresh.
One cup of frozen blueberries delivers around 8 to 10 milligrams of magnesium.
That’s basically the same as fresh — so if frozen is what you have on hand, you’re not missing out on magnesium.
3. Dried Blueberries Magnesium Content
Dried blueberries are more concentrated by weight, so a cup contains more magnesium — but also far more sugar.
Because water is removed, you’re getting more berry per bite, which means more magnesium per serving.
Still, dried blueberries are not a magnesium powerhouse, and the added sugar in many brands makes them a treat rather than a health food.
Why Blueberries Are Still Worth Eating
Even though blueberries are not high in magnesium, they bring plenty of other nutrients to the table.
That’s why nutritionists keep recommending them.
1. Rich in Antioxidants
Blueberries are famous for their antioxidant content, especially anthocyanins — the pigments that give them their deep blue color.
These antioxidants help fight oxidative stress in your body, which is linked to aging and chronic disease.
So even if the magnesium in blueberries is low, the antioxidant punch is high.
2. Good Source of Vitamin C and Fiber
One cup of blueberries gives you about 24% of your daily vitamin C and nearly 4 grams of fiber.
Fiber supports digestion and helps keep your blood sugar steady.
Vitamin C supports immune function and skin health.
These are real benefits that have nothing to do with magnesium.
3. Low in Calories and Easy to Add
Blueberries are low in calories — about 84 calories per cup — which makes them easy to sprinkle into yogurt, oatmeal, or smoothies.
That makes them a smart choice for a snack or a topping.
So while blueberries are not high in magnesium, they’re an easy way to boost the overall nutrient quality of your meals.
Best Foods for Magnesium If Blueberries Aren’t Enough
If you’re specifically trying to increase your magnesium intake, blueberries alone won’t get you there.
Here are foods that actually are high in magnesium:
1. Nuts and Seeds
Almonds, cashews, pumpkin seeds, and sunflower seeds are among the best magnesium sources around.
Just one ounce of almonds gives you about 80 milligrams of magnesium, which is far more than a cup of blueberries.
2. Leafy Green Vegetables
Spinach, Swiss chard, and kale are loaded with magnesium.
One cup of cooked spinach provides around 157 milligrams — a huge jump compared to the magnesium in blueberries.
3. Beans and Whole Grains
Black beans, edamame, quinoa, and brown rice all deliver solid amounts of magnesium.
A cup of cooked black beans gives you about 120 milligrams of magnesium.
So pairing blueberries with these foods is a much better strategy than relying on blueberries for magnesium.
So, Are Blueberries High in Magnesium?
Blueberries are not high in magnesium — one cup provides only about 9 milligrams, which is roughly 2% of your daily needs.
They do contain some magnesium, but they’re far from a top source.
If magnesium is your goal, reach for almonds, spinach, seeds, beans, or whole grains instead.
Still, blueberries are worth eating for their antioxidants, vitamin C, fiber, and low-calorie convenience.
So enjoy your blueberries — just don’t count on them to fix a magnesium gap.