I have been taking K2 for a while, thanks to Greygoose for suggesting it I don't remember to take it every day, but recently realized I feel better when I take it. Did some simple googling and found some interesting information.
Symptoms of deficiency :
- nose bleeding
- gastrointestinal bleeding
- tendency to bruise easily
- tendency to bone fractures
- cold hands and/or feet
and digestive issues
( I feel my digestive issues lessen when taking vitamin K2)
Was also said that the healthy gut bacteria for a healthy person should be enough for one to be able to produce K2. If gut bacteria is unbalanced it can lead to K2 deficiency in 3 to 4 weeks! Diarrhea or/and antibiotics can be one reason for that.
So anyone taking antibiotics should not only take probiotics and other vitamins, but sounds like K2 is a must as deficiency can develop that fast!
Found this from Finnish site so I cannot provide any useful links here, but I believe this same information can be found in English if some wants to.
That's all folks. Do not skip K2!