Spinach: Nutrition Facts and Health Benefits

According to the U.S. Department of Agriculture, one cup of raw spinach has about 7 calories but delivers high levels of vitamin K, vitamin A, folate, and iron. That’s a lot of nutrition from a food that barely adds calories to your plate.

This is exactly why so many people look up nutritional information on spinach before adding it to daily meals. Spinach is often called “healthy,” but smart eaters want facts. How much fiber does it really have? Is it good for digestion? Does cooking change its nutrients? These are practical questions, not trends.

In this guide, you’ll get clear answers. We’ll break down spinach nutrition facts in simple terms, explain spinach fiber and why it matters, cover proven health benefits, and share easy tips to eat spinach without losing its nutrients. No hype—just useful information you can trust and use.

Nutritional Information Spinach Provides at a Glance

Spinach packs a lot of nutrition into very few calories. According to the U.S. Department of Agriculture, spinach is one of the most nutrient-dense leafy greens you can eat.

A small serving gives your body vitamins, minerals, and fiber without adding much fat or sugar. That’s why spinach is often recommended for weight control, heart health, and daily wellness.

Spinach is considered nutrient-dense because:

• It is very low in calories
• It contains multiple vitamins and minerals per bite
• It has no added sugar or cholesterol

Raw and cooked spinach are both healthy, but they are not the same. Raw spinach keeps more vitamin C and folate. Cooked spinach shrinks in size, which makes minerals like iron and magnesium easier to absorb. Both forms have a place in a balanced diet.

Spinach Nutrition Information per 100g (Raw)

Here is a simple breakdown of spinach nutrition information per 100 grams of raw spinach:

Calories and Macros

• Calories: ~23
• Carbohydrates: ~3.6 g
• Protein: ~2.9 g
• Fat: ~0.4 g

Vitamins

• Vitamin A: Supports eye and skin health
• Vitamin C: Helps immunity
• Vitamin K: Important for bones and blood clotting
• Folate: Supports cell growth and pregnancy health

Minerals

• Iron: Helps carry oxygen in the blood
• Magnesium: Supports muscles and nerves
• Potassium: Helps manage blood pressure

This balance of low calories and high nutrients is why spinach nutrition info stands out among vegetables.

Spinach Nutrition Label Explained Simply

A spinach nutrition label may look confusing, but it’s easy once you know what to check.

Start with the serving size. Most labels use one cup of raw spinach. Then look at calories—spinach is very low. Next, scan fiber, vitamins, and minerals.

% Daily Value (DV) shows how much a nutrient contributes to your daily needs:

• 5% DV or less = low
• 20% DV or more = high

For everyday diets, focus on:

• Fiber
• Vitamin K
• Vitamin A
• Iron

You don’t need to memorize every number. If the label shows low calories and high vitamins, spinach is doing its job.

Spinach Fiber Content and Digestive Benefits

Spinach may be light and leafy, but it still adds fiber to your diet. According to the U.S. Department of Agriculture, one cup of raw spinach provides about 0.7 grams of fiber. That may sound small, but it adds up fast when spinach is eaten daily or cooked down into larger portions.

Spinach fiber helps slow digestion, supports regular bowel movements, and feeds healthy gut bacteria. Because spinach is low in calories, it lets you increase fiber intake without overeating.

Spinach contains both types of fiber:

• Insoluble fiber, which adds bulk to stool and helps prevent constipation
• Soluble fiber, which supports gut bacteria and helps manage blood sugar

Together, these fibers support digestion and keep your gut working smoothly.

Is Spinach a Good Fiber Source Compared to Other Greens?

Spinach is not the highest-fiber green, but it still plays an important role.

Here’s a simple comparison per cup (raw):

• Spinach: ~0.7 g fiber
• Kale: ~1.3 g fiber
• Lettuce: ~0.5 g fiber

Kale has more fiber, but spinach is easier to eat in larger amounts and blends well into many meals. That makes spinach fiber more practical for everyday use.

Best Ways to Preserve Fiber During Cooking

Fiber is stable, but how you cook spinach still matters.

To keep the most fiber:

• Lightly steam instead of boiling
• Sauté quickly with minimal oil
• Avoid overcooking until mushy

Cooking spinach reduces volume, which means you often eat more of it at once—raising total fiber intake. Whether raw or cooked, spinach remains a helpful fiber source for digestion and gut health.

Key Vitamins and Minerals in Spinach

Spinach stands out because it delivers many essential nutrients in a very small serving. According to the U.S. Department of Agriculture, spinach provides high levels of vitamin K, vitamin A, iron, magnesium, and antioxidants—all with very few calories. This strong nutrient-to-calorie ratio is what makes spinach nutrition info impressive compared to most leafy greens.

Instead of offering just one or two benefits, spinach supports bones, blood, eyes, and overall cell health at the same time.

Vitamin K and Bone Health

Spinach is one of the richest natural sources of vitamin K.

Vitamin K helps:

• Build and maintain strong bones
• Support normal blood clotting
• Reduce the risk of bone fractures as you age

Just one cup of raw spinach can provide more than half of your daily vitamin K needs. This makes spinach especially helpful for bone health, especially for adults and older individuals.

Iron in Spinach: Plant-Based Facts You Should Know

Spinach contains non-heme iron, the type found in plant foods. This iron helps move oxygen through your blood and supports energy levels.

Non-heme iron is absorbed more slowly than iron from meat, but it still matters—especially for vegetarians and vegans.

Tips to improve iron absorption from spinach:

• Eat spinach with vitamin C–rich foods like lemon, tomatoes, or oranges
• Lightly cook spinach to reduce compounds that block iron absorption
• Avoid drinking tea or coffee with spinach-heavy meals

When prepared the right way, spinach can be a reliable plant-based iron source.

Antioxidants and Phytonutrients

Spinach is rich in antioxidants like lutein and zeaxanthin. These nutrients are known for supporting eye health.

They help by:

• Protecting eyes from blue light damage
• Supporting long-term vision health
• Reducing oxidative stress in the body

Oxidative stress happens when harmful molecules damage cells. Antioxidants in spinach help slow this process, which supports overall health and aging.

This mix of vitamins, minerals, and antioxidants explains why spinach nutrition information consistently ranks it among the healthiest leafy greens you can eat.

Health Benefits Backed by Spinach Nutrition Info

Spinach is more than just a leafy green—it delivers real health benefits supported by nutrition data. According to the U.S. Department of Agriculture, spinach is rich in vitamins, minerals, fiber, and plant compounds that support heart health, digestion, weight control, and immunity. These benefits come from regular intake, not from trends or claims.

Supports Heart Health

Spinach contains potassium and natural nitrates, both linked to heart health.

• Potassium helps balance sodium levels and supports healthy blood pressure
• Natural nitrates improve blood flow by relaxing blood vessels

Eating spinach as part of a balanced diet may help reduce strain on the heart over time, especially when paired with other whole foods.

Helps Manage Blood Sugar Levels

Spinach has a low glycemic impact, meaning it does not cause sharp blood sugar spikes.

• Spinach fiber slows digestion
• Low carbs help keep blood sugar steady

This makes spinach a smart choice for people managing diabetes or trying to avoid energy crashes.

Supports Weight Management

Spinach is a classic low-calorie, high-volume food.

• One cup has very few calories
• High water content helps you feel full
• Fiber adds bulk without extra energy

You can eat larger portions of spinach without overeating, which helps with portion control and long-term weight management.

Boosts Immunity and Overall Wellness

Spinach provides vitamins A and C, both important for immune health.

• Vitamin A supports the skin and immune barriers
• Vitamin C helps the body fight infections and supports healing

Together, these nutrients help your body stay strong and recover faster from everyday stress and illness.

These evidence-based benefits explain why spinach nutrition info consistently ranks it as a smart food choice for daily health.

Spinach Nutrition Information for Different Diets

Spinach works well across many eating styles because it is low in calories, low in carbs, and rich in essential nutrients. According to the U.S. Department of Agriculture, spinach provides vitamins, minerals, and fiber without added sugar or fat. This balance makes spinach easy to fit into daily meals, no matter how you eat.

Spinach for Vegetarians and Vegans

Spinach adds value to plant-based diets by supplying key micronutrients.

• Provides small amounts of plant protein
• Rich in iron, folate, magnesium, and vitamin K
• Supports energy, bone health, and cell function

While spinach is not a main protein source, it supports overall nutrition when combined with beans, lentils, or tofu.

Spinach for Low-Carb and Keto Diets

Spinach is naturally low in carbs, making it ideal for low-carb and keto plans.

• About 1 gram of net carbs per cup (raw)
• High fiber helps reduce net carb impact
• Easy to eat in larger portions without breaking carb limits

Spinach works well in omelets, salads, and sautéed dishes for low-carb meals.

Spinach in Diabetic-Friendly Meal Plans

Spinach helps support stable blood sugar levels.

• Spinach fiber slows digestion
• Low glycemic impact prevents sharp spikes
• High volume helps with portion control

Because spinach does not raise blood sugar quickly, it is often included in diabetic-friendly meal plans.

This flexibility explains why spinach nutrition information fits so many diets without special adjustments.

Raw vs Cooked Spinach: Nutrition Differences

Raw and cooked spinach both offer health benefits, but they are not the same nutritionally. According to the U.S. Department of Agriculture, cooking spinach changes how some nutrients behave rather than removing its value.

Raw spinach keeps more vitamin C and folate, which are sensitive to heat. Cooked spinach, on the other hand, shrinks in volume. This allows you to eat more spinach at once and absorb higher amounts of minerals like iron, calcium, and magnesium.

Cooking also reduces oxalates, natural compounds that can block mineral absorption. This means cooked spinach can make certain nutrients easier for your body to use.

Nutrient Loss vs Improved Absorption

Some vitamins are lost during cooking, but that doesn’t make cooked spinach unhealthy.

• Raw spinach: higher vitamin C and folate
• Cooked spinach: better absorption of iron and calcium
• Both forms: strong antioxidant content

The best choice depends on your goal. Raw spinach works well in salads and smoothies. Cooked spinach works better for mineral intake and digestion.

Best Cooking Methods to Retain Nutrients

How you cook spinach matters.

Steaming

• Preserves most vitamins
• Softens spinach without overcooking

Sautéing

• Quick cooking keeps nutrients intact
• Use small amounts of oil

Blanching

• Brief boiling followed by cold water
• Reduces oxalates while limiting nutrient loss

Avoid boiling spinach for long periods, as nutrients can leak into the water. Short cooking times help protect spinach nutrition info while improving absorption.

Potential Side Effects and Considerations

Spinach is healthy for most people, but there are a few things to keep in mind. According to the National Institutes of Health, certain compounds in leafy greens can affect how the body absorbs nutrients or interacts with medications. These issues are not common, but they are worth understanding.

Oxalates and Kidney Stone Concerns

Spinach is high in oxalates, natural compounds found in many plant foods. In some people, oxalates can bind with calcium and raise the risk of kidney stones.

This does not mean spinach is unsafe. Most people can eat it without problems. Those with a history of kidney stones may want to:

• Limit large daily portions of spinach
• Choose cooked spinach, which lowers oxalate levels
• Drink enough water throughout the day

For most healthy adults, moderate spinach intake is not a concern.

Vitamin K Interactions With Medications

Spinach is very high in vitamin K, which helps with blood clotting. This can interfere with blood-thinning medications.

If you take blood thinners:

• Avoid sudden increases in spinach intake
• Keep vitamin K intake consistent
• Talk to a doctor before making diet changes

The issue is balance, not avoidance.

Who Should Moderate Spinach Intake

You may need to limit spinach if you:

• Have kidney stone history
• Take blood-thinning medication
• Have been advised to limit oxalates

For everyone else, spinach can be part of a healthy diet when eaten in reasonable portions. Understanding these considerations helps you use spinach safely and confidently.

How to Add Spinach to Your Daily Diet

Spinach is easy to use because it has a mild taste and cooks fast. According to the U.S. Department of Agriculture, spinach fits well into daily meals without adding many calories, fat, or sugar. You don’t need special recipes—small changes work best.

Easy ways to eat more spinach:

• Add raw spinach to smoothies with fruit and yogurt
• Toss fresh spinach into salads or wraps
• Stir spinach into eggs, soups, or pasta dishes
• Sauté spinach with garlic as a quick side dish

Spinach works raw or cooked, so you can adjust based on taste and time.

Smoothies, Salads, and Cooked Dishes

Smoothies

Spinach blends well and doesn’t overpower flavor. One handful adds nutrients without changing taste.

Salads

Use spinach as a base instead of lettuce. Pair it with nuts, beans, eggs, or grilled chicken for balance.

Cooked Dishes

Add spinach near the end of cooking. It wilts fast and keeps more nutrients when not overcooked.

How Much Spinach Should You Eat Daily?

There is no single rule, but simple portion guidance helps.

• Raw spinach: 1–2 cups per day
• Cooked spinach: ½ to 1 cup per day

Eating spinach a few times a week is enough for most people. Mixing raw and cooked spinach gives a good balance of vitamins, minerals, and fiber without overdoing it.

Small, regular portions are easier to stick with and support long-term health.

Is Spinach Worth Eating Every Day?

According to the U.S. Department of Agriculture, spinach is one of the lowest-calorie vegetables while delivering high levels of vitamin K, vitamin A, folate, iron, and fiber. Few everyday foods offer that much nutrition in such small portions.

When you look at the nutritional information spinach provides, the value is clear. Spinach adds fiber for digestion, key vitamins for bones and immunity, and minerals that support heart and muscle function. It works raw or cooked, fits most diets, and is easy to add to meals without changing taste or calories much.

The takeaway is simple: spinach is worth eating often. You don’t need large servings or fancy recipes. Add it to smoothies, salads, eggs, or cooked dishes a few times a week and let the nutrients do the work. If you found this guide helpful, bookmark it and use it as a quick reference the next time spinach is on your plate.