In order to dive into what foods are rich in K2, we need to unpack vitamin K2 a little more. There are several different types of vitamin K2. More accurately, there are several different ‘lengths’ of the compound. Each type of K2 is designated with its length in the name. The two most well-studied types/lengths are MK-4 and MK-7 dental equipment. (For those of you who really want to know, the M in MK stands for menaquinone which is the ‘official’ name for K2. The M differentiates these compounds from a sister compound, vitamin K1, which is phylloquinone. The number after MK shows the different ‘lengths’ of the slightly varying compounds.) Both MK-4 and MK-7 forms of K2 give calcium the intelligence of where to go in our bodies. Main food sources of MK-4 The only known food sources of MK-4 vitamin K2 are from animal products. As it’s a fat soluble vitamin, it’s found in the fats from quality animal products. But quality plays a big role. For example, an egg yolk from a healthy chicken with access to plenty of green grass yields 4-5x the amount of vitamin K2 compared to a factory farmed chicken egg. An excellent source of MK-4 vitamin K2 is goose liver. Hmm, not so sure about goose liver? Read on. Good sources of MK-4 are pastured egg yolks, butter/ghee from cows on pasture, fish eggs, even organ meats from grazing animals. (Incidentally, indigenous peoples praised the termite for quality nutrition. Not surprising, termites are very high in K2 tooth scaler australia!) Main food sources of MK-7 So, MK-4 vitamin K2 comes from animal products. However, MK-7 vitamin K2 is produced by certain bacterial strains. This is very good news for those of you who choose to not consume animal products, as you can still get plenty of vitamin K2 in your diet! The best source of MK-7 vitamin K2 is a Japanese fermented soy product called natto. Other more common foods higher in MK-7 are aged cheeses (particularly gouda, brie, and even some quality cheddar cheese). If you eat cheese, why not find a quality cheese made from milk from cows who graze green pastures regularly? This way, you can get both MK-4 and MK-7 in one meal! So, how much K2 do we need? The truth is, we really don’t know. There is no ‘right amount’ for K2 for everyone. We consider trying to find the ‘right amount for everyone’ to be really going down the wrong path. Our bodies are changing all the time, so we have to be adaptive to the demands of the changing times. For example, Dr. Linus Pauling, the person credited with the discovery of vitamin C, took around 12 grams (12000 mg) of the vitamin daily. His peers all laughed at Dr. Pauling because science had already established a lower recommended daily allowance for vitamin C. Dr. Pauling lived decades longer and in better health than his nay-sayer peers. Just like our needs for vitamin C change based on many factors, our needs for K2 can also vary.  Taking Care Of Your Teeth？ for more information.