What the evidence says. Several controlled trials; effects real but modest or context-dependent.
Nutrition per serving 1 oz (28 g, ~28 peanuts)
Sugars1.3 g5%
Fibre2.4 g9%
Other carbs0.9 g3%
Protein7.3 g26%
Fat14 g50%
Other2.1 g8%
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.
Peanut (Arachis hypogaea) is a nut or seed used for higher intake associated with lower cardiovascular and all-cause mortality in large cohorts. NutriDex grades the human evidence as Moderate. Peanuts are botanically a legume but nutritionally behave like tree nuts, supplying unsaturated fat, plant protein, fiber and L-arginine. The strongest human data are observational: in a prospective study of over 200,000 people across the US Southern Community Cohort and the Shanghai cohorts (Luu 2015), higher peanut/nut intake was associated with roughly 17-21% lower total mortality, driven mainly by fewer cardiovascular deaths. A systematic review and meta-analysis of randomized trials (2019) found peanut intake produced modest reductions in total cholesterol, triglycerides and diastolic blood pressure, though effects on LDL cholesterol were inconsistent and often non-significant. Randomized evidence specific to peanuts on hard endpoints is limited; the landmark PREDIMED trial (Estruch 2018) used mixed nuts (mostly walnuts, with almonds and hazelnuts) rather than peanuts, so its ~28% reduction in major cardiovascular events is not peanut-specific. Overall the evidence is moderate and largely consistent with the broader nut literature, but causal proof for peanuts alone is weaker than for walnuts or almonds.
Purported Benefits
✓Higher intake associated with lower cardiovascular and all-cause mortality in large cohorts
✓Modest improvements in total and LDL cholesterol and triglycerides
✓Lowers diastolic blood pressure in pooled trial data
✓Helps with satiety and weight maintenance despite calorie density
✓Part of nut-supplemented Mediterranean diet shown to cut major CVD events in an RCT
✓Provides plant protein, fiber and unsaturated fat as a low-cost nut alternative
Dosing & Compounds
Typical Dose
About 1 oz (28 g) per day, a small handful, unsalted
Active Compounds
Monounsaturated fatty acids (MUFA, oleic acid)Polyunsaturated fatty acids (PUFA, linoleic acid)Plant proteinDietary fiberL-argininePhytosterolsMagnesiumNiacin and folateResveratrol and polyphenols
Safety & Cautions
⚠
Peanut allergy is one of the most common and severe food allergies and can cause life-threatening anaphylaxis; people with peanut allergy must avoid all peanuts and peanut-containing products. Peanuts are a legume, not a tree nut, but cross-reactivity and shared processing lines mean tree-nut-allergic individuals should be cautious. Peanuts are calorie-dense (~160-170 kcal per 28 g), so portion control matters for weight management; choose unsalted to limit sodium. Peanuts stored improperly can harbor aflatoxin, a mold-derived carcinogen, so buy fresh, well-stored product and discard moldy or shriveled nuts. Whole peanuts and globs of peanut butter are a choking hazard for children under 4. Salted/honey-roasted versions add sodium and sugar. Educational only — always check with your doctor or pharmacist before combining Peanut with any medicine.
Peanut is most often taken for Higher intake associated with lower cardiovascular and all-cause mortality in large cohorts, Modest improvements in total and LDL cholesterol and triglycerides, Lowers diastolic blood pressure in pooled trial data, Helps with satiety and weight maintenance despite calorie density. Affordable legume nut linked to lower CVD and total mortality
Does Peanut work — what does the evidence say?
Moderate evidence. Several controlled trials; effects real but modest or context-dependent. Peanuts are botanically a legume but nutritionally behave like tree nuts, supplying unsaturated fat, plant protein, fiber and L-arginine. The strongest human data are observational: in a prospective study of over 200,000 people across the US Southern Community Cohort and the Shanghai cohorts (Luu 2015), higher peanut/nut intake was associated with roughly 17-21% lower total mortality, driven mainly by fewer cardiovascular deaths. A systematic review and meta-analysis of randomized trials (2019) found peanut intake produced modest reductions in total cholesterol, triglycerides and diastolic blood pressure, though effects on LDL cholesterol were inconsistent and often non-significant. Randomized evidence specific to peanuts on hard endpoints is limited; the landmark PREDIMED trial (Estruch 2018) used mixed nuts (mostly walnuts, with almonds and hazelnuts) rather than peanuts, so its ~28% reduction in major cardiovascular events is not peanut-specific. Overall the evidence is moderate and largely consistent with the broader nut literature, but causal proof for peanuts alone is weaker than for walnuts or almonds.
What is the typical dose of Peanut?
About 1 oz (28 g) per day, a small handful, unsalted
Is Peanut safe? Any cautions or side effects?
Peanut allergy is one of the most common and severe food allergies and can cause life-threatening anaphylaxis; people with peanut allergy must avoid all peanuts and peanut-containing products. Peanuts are a legume, not a tree nut, but cross-reactivity and shared processing lines mean tree-nut-allergic individuals should be cautious. Peanuts are calorie-dense (~160-170 kcal per 28 g), so portion control matters for weight management; choose unsalted to limit sodium. Peanuts stored improperly can harbor aflatoxin, a mold-derived carcinogen, so buy fresh, well-stored product and discard moldy or shriveled nuts. Whole peanuts and globs of peanut butter are a choking hazard for children under 4. Salted/honey-roasted versions add sodium and sugar.
How many studies support Peanut?
NutriDex cites 12 sources for Peanut, graded "Moderate".
Cite this page
APA
Peh, D. (2026). Peanut (Arachis hypogaea): Benefits, Dosage, Side Effects & Evidence. NutriDex — The Supplement Research Compendium. Retrieved 16 Sept 2026, from https://nutridex.info/s/peanut
BibTeX
@misc{nutridex_peanut,
author = {Peh, Daryl},
title = {Peanut (Arachis hypogaea): Benefits, Dosage, Side Effects \& Evidence},
year = {2026},
howpublished = {NutriDex --- The Supplement Research Compendium},
url = {https://nutridex.info/s/peanut},
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.