Why fat for bulking?

[odessy]

I just Read through the unofficial bulk thread and cutting thread and was just wondering why change your fat intake? I can understand your body requires certain amounts of essential fats but why not keep this to a minimum, regardless of whether you are bulking or cutting as to always keep fat build up to a minimum?

In particular, the example diet has lean beef, swiss cheese and full fat mayo. Are these necessary and what role does this added fat play in bulking?

[FireGuy]

Just a way of increasing your caloric intake, your body will actually convert excess carbs to bodyfat easier than it will excess dietary fat.

[csavage0]

Like the above statement said about increasing cal and this becomes a useful tool expecially for hard gainers. It also helps in hormone regulation and cellular function