Arugula contains a moderate amount of iron for a leafy green, but it’s not particularly high in iron compared to other options. One cup of raw arugula provides just 0.15 mg of iron, and even 100 grams (roughly 5 cups, loosely packed) contains only 1.46 mg. For context, adult men need 8 mg of iron daily and adult women aged 19 to 50 need 18 mg. So a typical salad-sized serving of arugula covers a small fraction of your daily needs.
How Arugula Compares to Other Greens
Spinach is the more iron-dense leafy green by a significant margin. Per 100 grams, raw spinach delivers 2.71 mg of iron compared to arugula’s 1.46 mg, nearly 86% more. If your main goal is boosting iron intake through salads and greens, spinach is the stronger choice.
That said, arugula still contributes meaningful amounts of iron when eaten regularly and in larger quantities. It also brings calcium, potassium, magnesium, and copper to the table. Greens like arugula work best as part of a broader pattern of iron-rich eating rather than as a sole source.
Why Plant Iron Is Harder to Absorb
All the iron in arugula is nonheme iron, the form found in every plant food. Your body absorbs nonheme iron less efficiently than the heme iron found in meat, poultry, and seafood. The difference is large enough that the NIH estimates vegetarians need nearly twice the recommended iron intake to compensate for lower absorption rates.
Stomach acid plays a key role in breaking down and absorbing nonheme iron. Certain compounds in grains and legumes (called phytates) and some polyphenols can further reduce how much iron your body actually takes in from a meal. So the 1.46 mg per 100 grams on paper doesn’t translate directly into 1.46 mg your body uses.
How to Get More Iron From Arugula
Vitamin C is the most effective booster for nonheme iron absorption. Pairing arugula with foods rich in vitamin C, like tomatoes, bell peppers, citrus segments, or a squeeze of lemon juice in your dressing, helps your body pull more iron from the greens. This is a practical, well-established strategy that applies to all plant-based iron sources.
Adding a small amount of meat, poultry, or seafood to an arugula salad also enhances nonheme iron absorption. The combination works in both directions: you get heme iron from the animal protein and absorb more of the nonheme iron from the arugula at the same time. A simple arugula salad with grilled chicken, cherry tomatoes, and lemon vinaigrette is a surprisingly efficient iron delivery system compared to eating any of those foods alone.
What Iron Actually Does in Your Body
Iron is a core component of hemoglobin, the protein in red blood cells that carries oxygen from your lungs to every tissue in your body. It also supports myoglobin, a related protein that supplies oxygen specifically to your muscles. Without enough iron, your body can’t produce healthy red blood cells efficiently, which is why low iron often shows up as fatigue, weakness, and difficulty concentrating.
Pregnant women have the highest iron needs at 27 mg per day, more than three times what adult men require. Women of reproductive age need 18 mg daily, largely because of monthly blood loss. After age 51, the recommendation drops to 8 mg for both men and women.
The Bottom Line on Arugula and Iron
Arugula is a nutritious green with a respectable but modest iron content. It’s not a powerhouse iron source on its own, especially in the small amounts people typically eat in a salad. If you’re trying to increase your iron intake through greens, spinach delivers roughly twice as much per serving. But arugula still contributes, particularly when you eat it alongside vitamin C-rich foods that help your body absorb more of what’s there. Think of it as one piece of a larger iron puzzle rather than the solution by itself.