What are the major food and non-food sources of vitamin K? What factors may adversely affect vitamin K nutrition in the body?
What will be an ideal response?
Like vitamin D, vitamin K can be obtained both from foods and from a nonfood source. Bacteria in the GI tract synthesize vitamin K, although the amount is insufficient to meet the body's needs and its bioavailability is limited. Therefore the diet must also supply vitamin K, which is found primarily in leafy green vegetables such as spinach and kale, fruits such as avocado and kiwi, and some vegetable oils such as soy-bean oil. Naturally occurring vitamin K in foods is phylloquinone (sometimes called vitamin K1), whereas vitamin K produced by GI bacteria is menaquinone (sometimes called vitamin K2).
You might also like to view...
Training more than six days per week
A. substantially increases the chances of injury. B. will maximize fitness in the shortest time. C. produces double the fitness of training three days per week. D. is necessary only for competitive athletes.
Gas exchange occurs in the _______________ unit
Fill in the blank(s) with correct word
________ refers to the number of years a person can expect to spend without having serious diseases or being disabled.
A. Longevity B. Life span C. Centenarians D. Healthy life expectancy
Martha wants to follow the Dietary Guidelines recommendations for saturated fat intake. She currently consumes a diet that supplies 2700 kcal per day. To meet the recommendations of the Dietary Guidelines, she should limit her saturated fat intake to less than ________ grams per day.
A. 20 B. 30 C. 40 D. 10