Fruits and vegetables supply nearly every vitamin your body needs, with vitamins A, C, K, E, and several B vitamins being the most abundant. The specific mix depends on what you eat: orange and red produce tends to be rich in vitamin A precursors, citrus and tropical fruits deliver vitamin C, leafy greens are packed with vitamin K and folate, and a handful of fruits and vegetables provide meaningful amounts of vitamin E. Eating a variety of colors is the simplest way to cover your bases.
Vitamin A and Beta-Carotene
Your body makes vitamin A from beta-carotene, a pigment found in orange, red, and dark green produce. Your intestines handle the conversion automatically, and they only convert as much as your body actually needs. The daily value for vitamin A is 900 micrograms, and many common vegetables blow past that in a single serving.
Sweet potatoes are the standout source, with one baked cup providing roughly 23,000 micrograms of beta-carotene. Carrots follow at about 10,600 mcg per cup, and cooked butternut squash delivers around 9,400 mcg. Among fruits, cantaloupe (3,575 mcg per cup), apricots (1,696 mcg), and mango (1,056 mcg) are the richest options. Dark leafy greens like romaine lettuce and spinach also carry significant amounts, despite not looking orange, because their green chlorophyll masks the underlying carotenoid pigments.
Vitamin C
Vitamin C is the vitamin most people associate with produce, and for good reason. The daily value is 90 mg, and many fruits and vegetables hit that in a single serving. Guava is one of the most concentrated sources on earth, delivering around 217 mg per 100 grams. Bell peppers, strawberries, kiwi, and oranges are all reliable sources that easily meet or exceed your daily needs. Even less obvious choices like broccoli, Brussels sprouts, and tomatoes contribute meaningful amounts.
Vitamin C is water-soluble and heat-sensitive, which means how you prepare your food matters almost as much as what you eat. More on that below.
B Vitamins, Especially Folate
Folate (vitamin B9) is the B vitamin most concentrated in produce. Dark green leafy vegetables are the top tier: turnip greens, spinach, romaine lettuce, asparagus, Brussels sprouts, and broccoli all deliver substantial folate. Fresh fruits and fruit juices contribute smaller but meaningful amounts. Your body uses folate to build DNA, produce red blood cells, and regulate an amino acid called homocysteine. Without enough folate, along with vitamins B6 and B12, homocysteine levels can creep up, which is linked to cardiovascular problems.
Vitamin B6 shows up in bananas, potatoes, spinach, and bell peppers. Thiamin (B1) is found in peas and corn. These amounts are modest compared to what you’d get from whole grains or animal products, but they add up across a day of varied eating.
Vitamin K
If you eat leafy greens regularly, you’re almost certainly getting enough vitamin K. The daily value is 120 micrograms, and a single cup of raw kale, spinach, or Swiss chard can deliver several times that amount. Broccoli, Brussels sprouts, and green peas are also solid sources. Vitamin K is essential for blood clotting and bone metabolism, and deficiency is rare in people who eat vegetables consistently.
Vitamin E
Vitamin E is harder to get from produce alone since the richest sources are nuts, seeds, and plant oils. But several fruits and vegetables still contribute. Spinach, beet greens, and collard greens are the top vegetable sources. Red bell peppers, asparagus, and pumpkin also provide some. Among fruits, mangoes and avocados stand out. The daily value is 15 mg, and most people need a combination of greens, nuts, and cooking oils to hit that number.
Why Color Matters
The color of a fruit or vegetable is a rough guide to its vitamin profile. Orange and yellow produce (sweet potatoes, carrots, mangoes) signals beta-carotene. Red fruits like strawberries and red peppers tend to be high in vitamin C. Dark green vegetables (spinach, kale, broccoli) are your best bet for folate, vitamin K, and some vitamin E. This isn’t a perfect rule, but it explains why nutritionists emphasize eating a range of colors: each color group fills different nutritional gaps.
Don’t Throw Away the Peel
A surprising amount of a fruit or vegetable’s nutrition sits in the skin. A raw apple with its peel contains up to 332% more vitamin K, 142% more vitamin A, and 115% more vitamin C than a peeled apple. A boiled potato with skin provides up to 175% more vitamin C and 111% more folate than one without. Even kiwi skin, which most people discard, adds 34% more folate and 32% more vitamin E. Orange peel is particularly concentrated: just one tablespoon provides 14% of your daily vitamin C, nearly three times more than the same amount of the inner fruit.
Up to 31% of the total fiber in a vegetable is in its skin, and antioxidant levels in fruit peels can be up to 328 times higher than in the flesh. When the peel is edible and you can buy organic or wash thoroughly, keeping it on is one of the easiest nutritional upgrades you can make.
How Cooking Changes Vitamin Content
Water-soluble vitamins, particularly vitamin C and the B vitamins, are the most vulnerable to cooking. Boiling is the most destructive method: vitamin C retention in boiled vegetables ranges from 0% (chard loses it all) to about 74% (sweet potatoes hold up best). The vitamins leach into the cooking water, so unless you’re drinking the broth, they’re gone.
Steaming does better, preserving vitamin C at rates up to about 89%. Microwaving is the gentlest common method, with retention above 90% for spinach, carrots, sweet potatoes, and broccoli. The key factor is reduced contact with water and lower temperatures. Fat-soluble vitamins like K and E tend to survive cooking better, though beta-carotene can degrade with extended heat.
If you want to maximize vitamin C, eat produce raw or microwave it briefly. For cooked dishes, steaming beats boiling every time.
Fresh vs. Frozen Produce
Frozen fruits and vegetables are flash-frozen shortly after harvest, which locks in most of their nutritional value. A study comparing eight common commodities found that vitamin C levels showed no significant difference between fresh and frozen in five out of eight items, and frozen samples actually had higher vitamin C in the remaining three. Vitamin E was also equal or higher in frozen versions for most produce tested.
The one exception is beta-carotene, which decreased noticeably in some frozen vegetables like peas and carrots. But overall, frozen produce is nutritionally comparable to fresh and often more practical. If fresh vegetables sit in your fridge for a week before you eat them, frozen may actually deliver more vitamins.
Pairing Produce With Fat for Better Absorption
Vitamins A, E, and K are fat-soluble, meaning your body absorbs them far more efficiently when you eat them alongside some dietary fat. A salad full of spinach and carrots will deliver more of its vitamins if you dress it with olive oil or toss in some avocado. Carrots dipped in hummus, kale paired with nuts, or roasted sweet potatoes cooked in a bit of oil are all combinations that boost absorption naturally. You don’t need a lot of fat for this to work. A drizzle of oil or a handful of nuts with your vegetables is enough to make a real difference.