It’s not just a big pile of yellow-colored fat, there are many important nutrients in there, some of which have potent biological effects. However, this does depend on the type of butter, and the amounts of these nutrients vary greatly depending on what the cows ate.
Butter is basically just milk fat, also known as butterfat.
Butterfat is highly complex. It contains about 400 different fatty acids, and a decent amount of fat-soluble vitamins (1).
Fatty acids are actually more than just energy sources, some of them have potent biological activity.
As it turns out, many of the fatty acids in butter can affect our physiology and biochemistry in some way, leading to major health benefits.
This includes the fatty acid CLA (conjugated linoleic acid). It is popular as a fat loss supplement, and studies show that it can have powerful effects on health (2, 3).
Grass-fed butter contains 5 times more CLA than butter from grain-fed cows (4).
Butter from grass-fed cows is also much higher in Omega-3 fatty acids and vitamin K2, compared to butter from grain-fed cows (5).
As you can see, butter from grass-fed cows is a much healthier and more nutritious choice….ReadMore