11 Benefits of Spinach That Will Convince You to Eat More Leafy Greens

Updated on Mar. 13, 2025

Spinach benefits include everything from keeping your hair shiny to protecting you from diabetes and cancer.

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Like most produce, spinach packs a nutritious punch. This is hardly surprising given its earthy, sometimes bitter tasteit just tastes healthy, doesn’t it? Plus, many of us likely remember Popeye the Sailor Man, who was known for downing cans of spinach to boost his strength, even saying, “I’m strong to the finish ’cause I eats me spinach.” Not a bad promotion for a vegetable.

But while we know spinach is good for you, what is it about the leafy green that makes it a promising addition to anyone’s diet? We looked into the benefits of spinach and found some surprising advantages people experience when they eat it long-term. No, your muscles won’t bulge like Popeye’s, but you’ll enjoy protection from certain diseases, digestive relief, and an improvement in a few different parts of your body. Here’s what you should know.

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1. It improves blood glucose levels

There’s a reason (actually, many reasons) why spinach is called a diabetic superfood. Just one cup has 40% of your recommended daily serving of magnesium, which can help regulate blood sugars. The leafy greens contain the antioxidant alpha-lipoic acid, which lowers glucose levels and boosts insulin sensitivity, according to researchers at Oregon State University. Its low glycemic index keeps you safe from unexpected blood sugar spikes.

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2. It reduces your cancer risk

Adding more spinach to your diet is just one of many simple ways you can prevent cancer. Along with leafy veggies like kale, lettuce, and chard, spinach contains carotenoids, pigments found in plants that act as antioxidants to eliminate potentially dangerous free radicals. According to the American Institute of Cancer Research, foods with carotenoids can reduce the risk of certain breast cancers.

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3. It lowers blood pressure

You can keep a high blood pressure in check using natural remedies—like these drug-free blood pressure treatments—and stocking up on foods that work into the DASH diet. Significant amounts of potassium, folate, and magnesium put spinach in this important category. In some cases, these lifestyle changes alone aren’t enough, and your doctor may put you on medication.

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4. It boosts bone health

Spinach is a bit complicated when it comes to bone health. It’s loaded with calcium, but it also contains oxalates that make it hard for the body to absorb that calcium. However, the National Osteoporosis Foundation says one of the benefits of spinach is that it’s a valuable source of vitamin K, which is proven to increase bone density and can even prevent fractures.

So here’s the compromise: Next time you make a spinach salad, include cheese or a non-dairy calcium source to get the benefits of both for your bones.

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5. It eases your constipation

Fiber is the go-to nutrient for bathroom troubles. Since spinach has soluble and insoluble fiber, it helps ease you through any blockage; one cup of cooked spinach offers 4.3 grams which is 17% of the recommended daily intake.

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6. It puts iron in your diet

Just one cup of cooked spinach contains more than 6 milligrams of iron. That may not seem like a lot, but it makes up 36% of your daily recommended intake. So that one cup covers about one-third of your daily recommended servings, which is especially good news for vegetarians.

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7. It keeps your nails and hair healthy

Spinach has high amounts of vitamins A and C, both of which act as natural beauty products, according to the International Food Information Council.

Vitamin A helps produce a substance called sebum that lubricates our skin and hair. Vitamin C, in addition to absorbing all that previously mentioned iron, keeps hair growing strong and long, with the help of the protein collagen. Vitamin C and collagen also make a great team for strengthening your nails and, as a result, preventing annoying hangnails.

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8. It has more potassium than a banana

Really? Really.

If you compare 100 grams of spinach to 100 grams of bananas, the spinach has significantly more potassium (200 mg more, to be exact). Potassium is known to improve bone health and maintain normal digestive and muscular functions. Plus, it can help lower the risk of osteoporosis and stroke.

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9. It helps your eyesight

Move over, carrots. Another benefit of spinach is it has one of the most important vitamins for your eyes: lutein. This antioxidant can reduce your risk of cataracts and age-related macular degeneration, according to the American Optometric Association. Who knew carrots weren’t the only food that improve your eyesight?

Don’t miss these other foods that reduce your risk of macular degeneration.

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10. It promotes weight-loss

With a mere 6.9 calories in one cup of spinach, adding a few cups to your meal won’t put a dent in your diet. But that’s not the only way the benefits of spinach could help you shed pounds.

A study published in the Journal of the American College of Nutrition discovered that taking spinach extract (a concentrated form of the plant’s leaves) can keep you full and reduce cravings long after the meal is over, likely thanks to tiny compartments in spinach leaves called thylakoids. Add a handful of spinach to your eggs in the morning to beat cravings at lunch and beyond.

Later in the day, use spinach greens with these other surprising salad tricks that help you lose weight.

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11. It helps you recover from injuries

Spinach is a major source of vitamin K, with 181% of your daily needs in each serving. The vitamin helps your blood clot when you’re injured, so getting your daily dose is important to recovery.

There’s increasing evidence that vitamin K could help your heart as a whole, too. A 2018 study published in the Journal of Nutrition looked at 766 adolescents and found that the hearts of those who ate the least vitamin K1 were 3.3 times more likely to have an unhealthily large major pumping chamber. That’s pretty persuasive.

Ready to take the next step in your health journey and eat more spinach? Here are easy ways to add spinach to your meals.

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