Butter alternatives often marketed as healthy options because they contain more monounsaturated and polyunsaturated fats are not quite all they seem, according to a Consumers' Association investigation published in Which? magazine yesterday. The study focused on the fat content of over 100 margarines, low fat, sunflower oil- and olive oil-based spreads, and found that many of the products contained high levels of saturated fats. Government dietary advice has linked saturated fats to a higher risk of heart disease and consumers are encouraged to consider that avoiding them is the predominant reason for choosing the butter alternatives in the first place.