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Butter contains vitamins A, D, and E, but at the same time is a source of a large amount of saturated fats. When consumed excessively, they can contribute to an increase in the level of so-called bad cholesterol and increase the risk of cardiovascular diseases. The American Heart Association recommends limiting saturated fats, preferring unsaturated fats found in vegetable oils, nuts, and fish. ### 1. People with Milk Protein Allergy In cases of confirmed allergy to cow's milk proteins, butter can be dangerous. Despite its high fat content, it retains small amounts of milk proteins that can trigger an allergic reaction. Symptoms may include skin rashes, itching, swelling, nausea, and vomiting. In severe cases, anaphylaxis—a life-threatening reaction of the body—may occur. Such individuals should exclude products containing milk proteins according to the recommendations of an allergist. ### 2. People with High Cholesterol Butter is rich in saturated fatty acids, which can increase the concentration of low-density lipoproteins (LDL) in the blood. This indicator is often referred to as bad cholesterol, as its elevated level is associated with the risk of developing atherosclerosis. If tests show an excess of LDL, specialists recommend reviewing the diet. In particular, part of the butter can be replaced with olive, canola, or sunflower oil. However, it is not necessary for everyone with high cholesterol to completely give up butter. The crucial factors are its quantity, other foods in the diet, and individual medical recommendations. ### 3. People with Heart and Vascular Diseases People with ischemic heart disease, as well as those who have had a heart attack or stroke, should pay particular attention to their butter consumption. Excessive intake of saturated fats can hinder cholesterol control, which is undesirable in the presence of high cardiovascular risk. However, there is no universal ban. A doctor may recommend significantly reducing the amount of butter or replacing it with products that have a more favorable fat composition. ### 4. People Managing Their Weight Butter is high in calories: 100 grams contain approximately 700–750 kilocalories. Even small additions to familiar dishes can subtly increase the overall energy value of the diet. For example, 10 grams of butter contain about 70–75 kilocalories. If added daily to several sandwiches, porridge, and potatoes, the total caloric intake will noticeably increase. Therefore, individuals aiming to lose or maintain weight should monitor portion sizes. ### How Much Butter Can Be Eaten Per Day? There is no single norm suitable for everyone. For a healthy adult, a small amount of butter can be part of a balanced diet. For example, a portion of 5–10 grams on a sandwich or in porridge is significantly more moderate than several large pieces throughout the day. However, it is important to consider not only butter but also other sources of saturated fats: fatty meats, sausages, cream, cheeses, pastries, and baked goods. The American Heart Association recommends limiting saturated fats to less than 6% of daily caloric intake. With a diet of 2000 kilocalories, this is approximately 13 grams of saturated fats per day—from all foods combined. ### Is It Necessary to Completely Give Up Butter? For most healthy individuals, there is no need for complete exclusion. Moderation and the overall composition of the diet are much more important. The exception is confirmed allergy to milk proteins, where even a small amount of the product can pose a danger. In cases of high cholesterol and cardiovascular diseases, restrictions are determined individually. **The main rule:** butter does not necessarily have to be excluded from the diet, but it is also incorrect to consider it an absolutely healthy product that can be consumed in unlimited quantities.
