Apples contain vitamin C as their standout vitamin, along with small amounts of several B vitamins and trace levels of vitamins A, E, and K. A medium raw apple provides roughly 8 mg of vitamin C, which covers about 9% of the daily recommended intake. The rest of the vitamin profile is modest, but the combination adds up, especially if you eat the skin.
Vitamin C: The Main Player
Vitamin C is the most abundant vitamin in apples by a comfortable margin. It acts as an antioxidant, helping protect cells from damage and supporting immune function. While a medium apple won’t rival an orange (which delivers about 70 mg), it still contributes a meaningful amount to your daily total, particularly if you eat multiple servings of fruit throughout the day.
Vitamin C content varies significantly between apple varieties. Research comparing cultivars found that some varieties contain roughly double the vitamin C of others. Red-fleshed and heritage varieties tend to score higher, while commercial favorites like Golden Delicious and Granny Smith consistently land on the lower end for both vitamin C and overall antioxidant activity. If maximizing nutrition matters to you, choosing a less common or locally grown variety can make a real difference.
B Vitamins in Apples
Apples contain five B vitamins: B1 (thiamin), B2 (riboflavin), B3 (niacin), B6, and B9 (folate). None of these are present in large quantities. A medium apple provides about 6 micrograms of folate, for instance, against a daily recommendation of 400 micrograms. That’s roughly 1.5% of what you need.
The B vitamins in apples support energy metabolism, red blood cell production, and nervous system function. You won’t rely on apples as a primary source for any of them, but they contribute to the broader mix you get from a varied diet. Think of them as a bonus rather than a reason to eat apples specifically.
Fat-Soluble Vitamins: A, E, and K
Apples contain only trace amounts of the fat-soluble vitamins. Vitamin K, which helps with blood clotting and bone health, shows up at about 0.7 micrograms per cup of peeled apple slices. For context, adults need around 90 to 120 micrograms daily, so apples barely register. Vitamins A and E are similarly minimal. These nutrients are better sourced from leafy greens, nuts, and seeds.
Why You Should Eat the Skin
The peel is where apples concentrate much of their nutritional value. Apple skin contains 1.5 to 9.2 times more antioxidant activity than the flesh, depending on the variety. Total phenolic content (the broader family of protective plant compounds) runs 1.2 to 3.3 times higher in the peel compared to what’s inside.
Some of the apple’s vitamins, including vitamin C, are more concentrated in or near the skin as well. Peeling an apple for texture or preference is fine, but you’re leaving a measurable share of the nutrition behind. A quick wash is all that’s needed to eat the skin safely. Among popular varieties, Starkrimson (a deep red apple) showed the highest antioxidant activity in the peel, with up to 64% more than lower-ranking cultivars like Golden Delicious and Granny Smith.
How Storage Affects Vitamin Content
The apple sitting in your fridge for weeks isn’t as nutritious as the one you bought fresh. Research on Golden Delicious and Red Delicious apples found that vitamin C content dropped by 40 to 85% after five months of refrigerated storage. Red Delicious apples lost vitamin C at a faster rate than Golden Delicious under certain conditions.
For most people, apples don’t sit around for five months. But the pattern holds at shorter intervals too: the longer an apple is stored, the less vitamin C remains. Apples purchased in season from local growers, which haven’t spent months in commercial cold storage, will generally retain more of their original vitamin content than those shipped long distances and stored for extended periods.
What Happens When You Cook Apples
Baking, stewing, and other heat-based cooking methods break down vitamin C, which is sensitive to both heat and oxygen. Studies on baked apple products found that roughly half of the vitamin C is lost during baking under favorable conditions. Standard cooking without any special preservation steps likely destroys even more.
B vitamins are also water-soluble and heat-sensitive, so stewed or boiled apples lose some of those as well, particularly into the cooking liquid. If you’re making applesauce or baked apples and want to retain more nutrients, shorter cooking times and lower temperatures help. Eating apples raw remains the simplest way to get their full vitamin profile.
How Apples Fit Into Your Overall Diet
Apples are not a vitamin powerhouse compared to citrus fruits, berries, or leafy greens. Their real nutritional strength lies in fiber (a medium apple provides about 4.4 grams) and a wide range of antioxidant compounds that don’t fall neatly into vitamin categories. The vitamins they do contain, primarily C with supporting roles from several B vitamins, add to your daily totals without standing out on their own.
Where apples excel is consistency and convenience. They’re one of the most commonly eaten fruits worldwide, they travel well, and they require no preparation. A food you actually eat every day contributes more to your nutrition than a superfood that stays in the back of the fridge. Choosing red or darker-skinned varieties, eating the peel, and buying fresh rather than long-stored apples are the three simplest ways to get the most vitamins from every bite.