"Having spent more than a decade in the fitness industry, I've seen every macro nutrient demonized at various points. And the object of this demonization changes every few years.
In the 1970s and '80s it was fat, with protein caught in that undertow as well. In the late 1990s and early 2000s, carbohydrates were demonized, a trend that's coming back around. Protein has gotten some new undeserved hatred again recently. And then there's the on-again, off-again battle that consumes other ingredients, such as dairy and gluten."
Another thing to think about is if your family has a history of diabetes, it would be wise to stay away from too much sugar. This is just another article I though was decent read that gave some insight into fat gain/loss, ill do my best to keep it interesting.