Nectarine

Food · Fruit · Food, Typed Supps

The peach-plum-cross story about nectarines isn't true — it's just a peach without the fuzz.

Stage by stage

Intake (Chewing releases juice): Chewing breaks open the fruit's cells, releasing vitamin C, potassium, sugars, and fiber together.
Stomach (Minimal breakdown): Stomach acid does little further work on the fruit tissue; the pulp moves on to the small intestine largely intact.
Small intestine (Nutrients absorbed): Vitamin C and potassium are absorbed here, while soluble pectin fiber slows how quickly the fruit's sugar reaches the bloodstream.
Bloodstream & tissues (Collagen, heart & skin support): Vitamin C supports collagen formation and immune cells, potassium helps regulate fluid balance and heart rhythm, and absorbed carotenoids contribute to skin and eye health.

Timing

Not essential — its vitamin C and potassium absorb fine on their own — but pairing with a little fat, like yogurt or nuts, modestly improves absorption of its carotenoids.

Time to effect

Hours: Blood vitamin C rises within about 2 to 3 hours of eating a nectarine, with potassium's fluid-balance effects acting on a similar timescale.

Allergens

None of the fourteen major allergens. Derived from what this food is, not from a product label.

Eating patterns

Fits: Vegan, Vegetarian, Pescatarian, Halal, Kosher, Gluten-free. Depends on the product: Keto.

In season

June to September in the northern hemisphere, December to March in the southern.

Satiety

The satiety index is measured on 240 kcal servings. At 39 kcal per 100 g that is 623 g of this, which is not a serving anyone eats — so the index has nothing to say about it.

Environmental footprint

1.1 kg CO2e and 199 litres of freshwater per kg, matched to "Other fruit" in Poore & Nemecek (2018), Science 360.

Cost band

Cheap — roughly £3 per kg, as a band midpoint rather than a price.

Key nutrients

Nutrition per 100g

Calories: 38.5
Protein: 0.8g
Carbohydrate: 7.9g
of which sugars: 7.9g
Fat: 0g
of which saturated: 0g
Fibre: 1.6g
Sodium: 0mg

Food vs. supplement

A 100g nectarine (roughly two-thirds of a medium fruit) provides about 5.4mg vitamin C (around 6% DV) and 201mg potassium (about 4% DV), plus 1.7g fiber — a modest dose of each nutrient next to a dedicated supplement, but bundled with fiber and plant compounds no pill supplies.

Kitchen tip

Ripen at room temperature until it gives slightly to gentle pressure, then eat the skin on — it holds much of the fruit's fiber and color pigments.

Common myth

"Nectarines are a cross between a peach and a plum." In reality: Nectarines are the same species as peaches (Prunus persica) — a single recessive gene at the PpeMYB25 locus, which governs fruit-skin fuzz formation, is the entire genetic difference; peach trees occasionally sprout a smooth-skinned "bud sport" branch as living proof there's no plum involved.