📊 Full nutrition facts — per 100g
| Nutrient | Amount | % Daily value | Level |
|---|---|---|---|
| Calories | 32 kcal | 2% | |
| Carbohydrates | 7.7g | 3% | |
| Dietary fibre | 2.0g | 7% | |
| Sugars | 4.9g | — | |
| GI (Glycaemic Index) | ~40 — Low | — | |
| Vitamin C | 58.8mg | 65% | |
| Manganese | 0.39mg | 20% | |
| Folate | 24µg | 6% | |
| Anthocyanins | very high | — | |
| Ellagic acid | high | — | |
| Fisetin | highest of any food | — | |
| Potassium | 153mg | 3% |
Based on Australian NRV. Source: FSANZ Australian Food Composition Database.
📈 Glycaemic index (GI)
💊 Key vitamins & minerals
✅ Health benefits
Strawberries are the richest known dietary source of fisetin — a flavonol polyphenol now being intensively researched as a senolytic (an agent that clears damaged 'zombie' cells that accumulate with ageing). Fisetin has activated longevity pathways in multiple animal studies, extending lifespan in mice by 10% when given late in life. Multiple human clinical trials of fisetin for conditions including Alzheimer's disease, frailty and COVID complications are currently underway. Strawberries provide fisetin in a food matrix with demonstrated good bioavailability.
Strawberries consistently rank among the most studied fruits for cardiovascular protection. Clinical trials have found that regular strawberry consumption significantly reduces LDL cholesterol, total cholesterol, inflammatory markers (CRP) and blood pressure. The mechanism involves anthocyanins (which reduce arterial stiffness and platelet aggregation), ellagic acid (which reduces LDL oxidation) and the combined antioxidant activity reducing vascular oxidative stress. The Nurses' Health Study found women eating 3+ servings of strawberries per week had 32% lower heart attack risk.
Strawberry consumption is associated with significantly slower cognitive decline in ageing populations in multiple large epidemiological studies. The Nurses' Health Study found that women eating 2+ servings of strawberries per week had cognitive ageing 2.5 years slower than those eating less. The mechanisms include fisetin's direct neuroprotective effects, anthocyanins crossing the blood-brain barrier to reduce neuroinflammation, and ellagic acid inhibiting acetylcholinesterase (the same enzyme targeted by Alzheimer's medications).
Strawberries have a low GI of 40 and actively reduce the blood glucose response to carbohydrate-containing foods eaten alongside them. A clinical trial found that eating strawberries with white bread significantly reduced post-meal glucose compared to bread alone. The polyphenols in strawberries inhibit alpha-glucosidase and alpha-amylase — the digestive enzymes that break down starch into glucose — creating a natural blood sugar modulation effect.
⚠️ Who should limit or avoid
Strawberry allergy is uncommon but occurs. The red pigment protein Fra a 1 can trigger OAS (oral allergy syndrome) in people with birch pollen allergy — causing mild tingling in the mouth. White/cream-coloured strawberry varieties (like Pineberry) lack this protein and are usually tolerated by people with OAS. Cooking denatures the protein and eliminates OAS symptoms. True strawberry allergy (urticaria, systemic reactions) is rare.
Strawberries are a histamine liberator — they can trigger histamine release even without containing high histamine themselves. People with histamine intolerance (which can cause headaches, hives, nasal congestion and gut symptoms) may react to strawberries. Heat processing (stewing, baking) reduces but does not eliminate this effect.
Strawberries are high in citric acid, which can soften dental enamel. Despite the popular DIY tip of using strawberry juice to whiten teeth, the citric acid temporarily softens enamel. Rinse with water after eating strawberries and wait 30 minutes before brushing. Do not brush immediately after eating acidic fruits.
🛒 How to select & buy strawberries
The most important quality indicator is colour uniformity — a good strawberry is deep red all the way to the stem with no white or pale yellow shoulders. White shoulders indicate harvesting before full ripeness; the fruit was picked for transport durability, not flavour. The anthocyanin (red pigment) and fisetin content both correlate directly with colour depth. Small to medium-sized strawberries are typically sweeter and more flavourful than large commercial ones.
A ripe, flavourful strawberry has a penetrating, sweet, distinctively fruity aroma even through the punnet packaging. No smell means no flavour — the volatile compounds responsible for the characteristic strawberry aroma are the same ones that develop with full ripeness. Supermarket strawberries frequently lack aroma because they are picked early for shelf life. Farmers' market strawberries, in-season, typically have strong aroma and are significantly superior in flavour and fisetin content.
Strawberries mould extremely quickly once one fruit is affected — the mould (usually Botrytis cinerea) spreads through the punnet within 24–48 hours. Always check the bottom of the punnet for any signs of mould before buying. Remove any affected berries immediately and keep the rest dry. Store in the original punnet with ventilation rather than sealed bags.
🧊 Storage tips & shelf life
Strawberries deteriorate rapidly at room temperature. Only leave on the bench if eating within hours. In warm Australian weather, refrigerate immediately on purchase. Room temperature brings out the best flavour for eating but at the cost of very rapid quality loss.
Key: store DRY and unwashed — moisture is the enemy. Keep in the original punnet or spread on a paper towel-lined container. Do not wash until ready to eat. Remove any soft or mouldy berries immediately to prevent spread. Bring to room temperature for 15 minutes before eating for the best flavour.
Frozen strawberries are excellent for smoothies, compotes, ice cream and baking. Hull and halve, freeze spread on a tray lined with baking paper, then bag. Frozen strawberries retain most of their anthocyanins, fisetin and vitamin C. Ideal for buying bulk at peak-season prices and freezing for year-round use.
📖 About strawberries — complete guide
The cultivated strawberry (Fragaria × ananassa) is an accidental hybrid that was created in 18th-century Brittany, France when the American Virginian strawberry (Fragaria virginiana, small but intensely flavoured) and the Chilean strawberry (Fragaria chiloensis, large but less sweet) accidentally cross-pollinated in a French garden around 1750. The resulting hybrid combined the size of the Chilean variety with the sweetness and flavour of the Virginian, and rapidly spread through European horticulture. The strawberry is therefore a New World fruit in European cultivation — neither of its parent species is native to Europe. Botanically, the 'strawberry' is not a true berry — it is an aggregate accessory fruit, where the fleshy part develops from the receptacle rather than the ovary. The true fruits are the tiny yellow seeds (achenes) on the surface.
The discovery that strawberries are the richest known food source of fisetin has driven significant scientific interest in what was previously considered simply a flavourful summer fruit. Fisetin was first identified as a potential senolytic (a compound that selectively eliminates senescent 'zombie' cells that accumulate with ageing and drive inflammation) by researchers at the Mayo Clinic. In a 2018 study, fisetin supplementation in elderly mice reduced senescent cells by 25–50%, restored physical function to that of young mice, and extended median remaining lifespan by 10%. Multiple human clinical trials are now underway. The practical implication for strawberry consumers is that regular strawberry consumption represents the most concentrated dietary source of this compound — a food connection between a well-enjoyed seasonal fruit and active longevity research.