Take the 2-minute tour ×
Physical Fitness Stack Exchange is a question and answer site for physical fitness professionals, athletes, trainers, and those providing health-related needs. It's 100% free, no registration required.

I've seen some studies that indicate MK4, a chemical from certain types of Vitamin K, is capable of preventing and reducing bone fractures.

I believe kale is the food with the most Vitamin K; however, I am unsure whether the vitamin K from it gives MK4 or MK7.

If you have a link, that'd be great.

share|improve this question
2  
It doesn't. It relates to the "Nutrition" part of the "Fitness & Nutrition" in big letters at the top of the page. –  Nick Aug 15 '11 at 16:24
2  
Change the title of the site if you're not going to entertain questions that 50% of the title suggests. –  ash Aug 16 '11 at 7:42
1  
I don't know why you closed my question because of YOUR stupidity to not change the title of the site. –  Nick Aug 16 '11 at 11:10
1  
From the FAQ, "Topics include exercise and training, nutrition and diets" –  Nick Aug 16 '11 at 11:12
1  
Nick, @Josie we are actually currently in the process of redefining the site scope and hence also the name. If you'd like to get involved in the discussion (make a case for keeping "Nutrition" in, as we are currently going towards kicking it out) you should write an answer to the Meta question Ivo linked to above. –  VPeric Aug 16 '11 at 13:24

1 Answer 1

up vote 1 down vote accepted

If I remember correctly, both MK4 and MK7 are types of Vitamin K2, whereas Kale would only contain K1, being a plant.

As far as sources go, I believe plants contain K1, animal products (meat, eggs, dairy, grass-fed butter!) contain MK4 and bacteria produce MK7, which is therefor found in fermented food (Sauerkraut, Natto! Yoghurt... ).

share|improve this answer
    
I thought the body converted K1 into the MK4 form of K2? Is this not correct? –  Nick Aug 15 '11 at 16:25
1  
However, supplementation of K1 appears to have no positive effect (unless it fixes a deficiency). The body seems to convert K1 to K2 at a fixed rate, and K1 is inactive in the body. Supplementation of K2 on top of what the body produces is what's beneficial. –  Waquo Aug 15 '11 at 18:40

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.