What the evidence says. Several controlled trials; effects real but modest or context-dependent.
Nutrition per serving 1 medium (182 g)
Water155.8 g86%
Sugars18.9 g10%
Fibre4.4 g2%
Other carbs1.8 g1%
Protein0.5 g0%
Fat0.3 g0%
What's in one serving, by weight — average composition (USDA).One serving as % of the adult daily requirement (FDA Daily Values). The bold outer ring = 100% of a day's needs.
Apple (Malus domestica) is a fruit used for modestly lowers total and ldl cholesterol versus placebo (rct meta-analysis). NutriDex grades the human evidence as Moderate. Human evidence for apples is moderate and rests largely on consistent observational cohorts plus a smaller body of RCTs. A 2022 meta-analysis of randomized trials found that more than a week of apple or apple-derived product intake significantly reduced total and LDL cholesterol versus placebo, especially in people with elevated baseline levels, though it showed no clear effect on triglycerides, glucose, CRP or blood pressure (and a small HDL reduction). Large prospective cohorts link higher apple/pear intake to lower stroke incidence and reduced type 2 diabetes risk, and flavonoid-intake meta-analyses associate apple-rich dietary patterns with lower cardiovascular and all-cause mortality. However, most outcome data are observational and confounded by overall healthy lifestyle, and the widely cited "apple a day" claim was not supported for reducing physician visits. Apples are nutrient-modest (low vitamin C, low micronutrient density) and act mainly through fibre and polyphenols rather than vitamins. Net effects on hard endpoints remain associational, not proven causal.
Purported Benefits
✓Modestly lowers total and LDL cholesterol versus placebo (RCT meta-analysis)
✓Associated with lower cardiovascular disease and stroke risk in cohorts
✓Whole-apple intake linked to reduced type 2 diabetes risk
✓Soluble fibre (pectin) supports satiety and digestive regularity
✓Higher flavonoid intake tied to lower all-cause mortality
✓Contributes to better overall diet quality and weight control
Dosing & Compounds
Typical Dose
One medium apple (~182 g) per day, eaten whole with skin where most polyphenols and fibre reside; 1-3 servings/day fits dietary fruit guidance. Whole fruit is preferable to juice.
Active Compounds
Pectin (soluble fibre)Quercetin glycosides (flavonols)Flavan-3-ols / procyanidinsChlorogenic acid (hydroxycinnamic acid)Phloridzin (dihydrochalcone)Vitamin C (ascorbic acid)PotassiumTriterpenoids (ursolic acid, in peel)
Safety & Cautions
⚠
Generally very safe. People with oral allergy syndrome (birch-pollen cross-reactivity, Mal d 1 protein) may react to raw apple; cooking usually helps. The natural sugar/FODMAP (fructose, sorbitol) load can cause bloating or diarrhoea in sensitive or IBS individuals and counts toward carbohydrate intake for diabetics. Apple seeds contain amygdalin (cyanogenic) but are harmless unless large quantities are crushed and eaten. No grapefruit-type CYP3A4 interaction. Skins may carry pesticide residues—wash well. Educational only — always check with your doctor or pharmacist before combining Apple with any medicine.
Apple is most often taken for Modestly lowers total and LDL cholesterol versus placebo (RCT meta-analysis), Associated with lower cardiovascular disease and stroke risk in cohorts, Whole-apple intake linked to reduced type 2 diabetes risk, Soluble fibre (pectin) supports satiety and digestive regularity. Fibre-rich everyday fruit with steady heart evidence
Does Apple work — what does the evidence say?
Moderate evidence. Several controlled trials; effects real but modest or context-dependent. Human evidence for apples is moderate and rests largely on consistent observational cohorts plus a smaller body of RCTs. A 2022 meta-analysis of randomized trials found that more than a week of apple or apple-derived product intake significantly reduced total and LDL cholesterol versus placebo, especially in people with elevated baseline levels, though it showed no clear effect on triglycerides, glucose, CRP or blood pressure (and a small HDL reduction). Large prospective cohorts link higher apple/pear intake to lower stroke incidence and reduced type 2 diabetes risk, and flavonoid-intake meta-analyses associate apple-rich dietary patterns with lower cardiovascular and all-cause mortality. However, most outcome data are observational and confounded by overall healthy lifestyle, and the widely cited "apple a day" claim was not supported for reducing physician visits. Apples are nutrient-modest (low vitamin C, low micronutrient density) and act mainly through fibre and polyphenols rather than vitamins. Net effects on hard endpoints remain associational, not proven causal.
What is the typical dose of Apple?
One medium apple (~182 g) per day, eaten whole with skin where most polyphenols and fibre reside; 1-3 servings/day fits dietary fruit guidance. Whole fruit is preferable to juice.
Is Apple safe? Any cautions or side effects?
Generally very safe. People with oral allergy syndrome (birch-pollen cross-reactivity, Mal d 1 protein) may react to raw apple; cooking usually helps. The natural sugar/FODMAP (fructose, sorbitol) load can cause bloating or diarrhoea in sensitive or IBS individuals and counts toward carbohydrate intake for diabetics. Apple seeds contain amygdalin (cyanogenic) but are harmless unless large quantities are crushed and eaten. No grapefruit-type CYP3A4 interaction. Skins may carry pesticide residues—wash well.
How many studies support Apple?
NutriDex cites 10 sources for Apple, graded "Moderate".
Cite this page
APA
Peh, D. (2026). Apple (Malus domestica): Benefits, Dosage, Side Effects & Evidence. NutriDex — The Supplement Research Compendium. Retrieved 16 Sept 2026, from https://nutridex.info/s/apple
BibTeX
@misc{nutridex_apple,
author = {Peh, Daryl},
title = {Apple (Malus domestica): Benefits, Dosage, Side Effects \& Evidence},
year = {2026},
howpublished = {NutriDex --- The Supplement Research Compendium},
url = {https://nutridex.info/s/apple},
note = {Reviewed by Dr Daryl Peh, MBBS Singapore, MMed FM. Accessed 2026-09-16}
}
For medical claims, citing the underlying primary studies linked above is preferred. NutriDex is an educational reference, not medical advice.