Which type of fat is solid at room temperature and linked to heart disease more strongly?

• A. Saturated fats
• B. Trans fats
• C. Monounsaturated fats
• D. Polyunsaturated fats

Answer: (A)

Saturated fats are solid at room temperature because their hydrocarbon chains have no double bonds, so the chains are straight and can pack tightly together. That tight packing gives them a solid, buttery texture. In terms of health, they tend to raise LDL cholesterol in many people, which is a risk factor for heart disease. Monounsaturated and polyunsaturated fats have kinks from double bonds, so they don’t pack as tightly and are typically liquid at room temperature; they are generally less associated with heart disease when substituted for saturated fats. Trans fats are also solid and harmful, but this item highlights saturated fats as the type most commonly linked to heart-disease risk, making them the best answer in this context.