Butter often appears in everyday meals. It spreads easily on bread, melts into vegetables and adds flavor to many traditional dishes.
But nutrition experts usually look beyond individual foods and focus on overall eating habits. The types of fats people consume regularly can influence long-term health, especially when it comes to the heart.
Health organizations including the World Health Organization and the Dietary Guidelines for Americans 2025–2030 recommend limiting saturated fat in the daily diet.
These guidelines suggest saturated fat should make up less than 10 percent of total daily calories.
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A familiar ingredient
Butter is one of the most common sources of saturated fat in many Western diets. It is made largely from milk fat, and much of that fat is saturated.
Even a small portion can contribute noticeably to daily intake. One tablespoon already represents a meaningful share of the recommended limit.
What studies suggest
According to the American Heart Association, diets high in saturated fat can raise levels of LDL cholesterol.
This type of cholesterol is linked to plaque buildup in the arteries, which can increase the risk of heart disease and stroke.
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Some long-term studies have also found that people who frequently use butter tend to have slightly higher overall mortality compared with those who mainly cook with plant oils.
Researchers say regular high saturated fat intake has been associated with:
- Increased LDL cholesterol
- Higher risk of type 2 diabetes
- Greater likelihood of weight gain
Scientists at Harvard T.H. Chan School of Public Health suggest replacing butter with oils such as olive or canola oil may help improve cholesterol levels.
Sources: JAMA, AHA and Verywell Health
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