Why a cup of strawberries can outpace an orange

Vitamin C is measured by the amount of ascorbic acid—the chemical name for the vitamin—in a given portion. A cup of sliced strawberries can provide roughly 90 milligrams, while a typical medium orange provides about 70 milligrams. The comparison is about these everyday portions, not an equal weight of each fruit; serving size changes the result.

That cup can meet or exceed a full day’s recommended amount, though the benchmark varies with age, sex, and life stage. Vitamin C helps the body make collagen, a protein used in skin and connective tissue, and helps it absorb iron from plant foods. It is water-soluble, so the body does not store large reserves; regular food sources matter.

How oranges became the shorthand

A nutrition fact does not automatically become a cultural association. Oranges are easy to recognize as a source of vitamin C, and decades of citrus promotion helped attach that message to the fruit. Once familiar, the association can persist even when another common serving compares favorably on the numbers.

The useful takeaway is not that oranges are a poor choice, but that the familiar “vitamin C fruit” is not the only one worth reaching for. A bowl of strawberries can supply a substantial share of the day’s vitamin C before an orange enters the picture.