Butter
A dairy fat made by churning cream until milkfat separates and forms a water-in-oil emulsion (≥80% milkfat).
Should I eat Butter?
Butter is a minimally processed dairy fat that delivers flavor but is high in saturated fat and calories. Most people can include small amounts, but milk‑allergic individuals must avoid it and anyone limiting saturated fat should watch portions.
Summary
Legally defined as at least 80% milkfat from milk or cream, butter is a whole food rather than an additive. A tablespoon provides about 102 calories and 7 g of saturated fat, plus modest vitamin A. It is very low in lactose and often tolerated by those with lactose intolerance, but it still contains milk proteins and is unsafe for milk allergy. Processing is simple churning rather than hydrogenation, and plain “butter” excludes added vegetable oils by definition. Health impact depends on dose: small amounts can fit within balanced diets, while frequent large servings raise saturated fat intake quickly.
Key Research Benefits
Very low in lactose
Because lactose is minimal, many people with lactose intolerance can handle typical portions.
Small amount of vitamin A
Butter contributes modest fat-soluble vitamin A alongside its calories and fat.
Key Research Risks
Cow’s milk allergen
Butter contains milk proteins; people with milk allergy must avoid it entirely.
Saturated fat adds up fast
Each tablespoon provides about 7 g of saturated fat, which can quickly exceed targets in heart-healthy eating patterns if portions are large.
Processing/refining note
Products labeled “butter” must be made exclusively from milk or cream and contain at least 80% milkfat, not hydrogenated vegetable oils; blends are different products.
Overview
What is it?
Why is it used?
Origin
Butter likely emerged wherever dairying took hold; written records from ancient Near East and classical texts reference churned milkfat. Codified as a standardized food in the U.S. in the early 20th century, and internationally under Codex standards as a water-in-oil emulsion made exclusively from milk or cream.
Process: Separate cream, pasteurize, churn, wash, work, and pack
Steps
Chemicals
Research & Safety
Research Summary
Digestive Effects
Because lactose is minimal, many people with lactose intolerance tolerate small amounts of butter without symptoms. Some individuals experience digestive discomfort from large amounts of fat, such as bloating or loose stools, especially if they have gallbladder issues or fat malabsorption. There is no evidence that typical portions of butter cause digestive harm in otherwise healthy people. People with milk allergy should avoid butter completely due to the presence of milk proteins.
Limit Consumption
People with cow’s milk allergy must avoid butter; milk is a major allergen and must be declared on labels. Those with lactose intolerance often tolerate standard portions because lactose is very low, which aligns with low‑FODMAP guidance. Individuals managing LDL‑cholesterol or following heart‑healthy patterns should watch saturated fat from butter, since it adds up quickly per tablespoon. Infants and children with diagnosed milk protein allergy also need to avoid butter unless advised otherwise by their clinician.
Fact Sheet
Regulatory Status
ESG & Sustainability
Allergens and Diet
Natural Alternatives
Ghee (clarified butter)
Coconut oil
Cocoa butter
Citations
21 U.S.C. §321a — “Butter” defined
1923-03-04U.S. Congress • U.S. Code
Standard for Butter (CXS 279-1971; amended 2022)
2022-12-01Codex Alimentarius Commission • Codex Alimentarius
Butter Nutrition Facts & Benefits
2024-01-01US Dairy • US Dairy (National Dairy Council)
Q&A: Food Allergen Labeling (Edition 5)
2025-01-06U.S. Food & Drug Administration • FDA
High and low FODMAP foods
2023-01-01Monash FODMAP • Monash University
Greenhouse gas emissions per kilogram of food product
2023-01-01Hannah Ritchie, Max Roser (dataset: Poore & Nemecek) • Our World in Data