Margarine is healthier than butter?

Myth: No. margarine is less healthy than butter fat having a trans-type, as to make it suitable consistency it suffers from the hydrogenation process, where the unsaturated fat is replaced by the structure fat trans.
This type of fat raises LDL (bad cholesterol) and lowers HDL (good cholesterol), so it is more harmful to health than butter, which should be of animal origin only increases LDL (bad cholesterol).
The ideal is to consume other forms of fat such as olive oil and vegetable oils in their natural form. Today in the market there are already margarines free of trans fat. This type of margarine yes, may be healthier than butter.