7. Margarine
There was a time when margarine was considered the healthy alternative to butter. However research into trans fats made that argument redundant. Trans fats are considered more unhealthy than any other fat, including saturated fats.
Trans fats increase bad cholesterol, which can lead to heart disease and stroke. Although the link between trans fatty acids and cancer is unclear, research by Johns Hopkins Medicine suggests lowering these fats as a part of their dietary recommendations for cancer patients and survivors.
