人体对几种维生素可能是危险的，当你把太多的人，但对于大多数人来说，维生素K是不是其中之一。谁能够得到太多的维生素K的唯一的人是那些服用血液稀释药物华法林。
Tip
大多数人不会体验到太多的维生素K.任何影响For people taking warfarin, suddenly increasing vitamin K can interfere with how well the medication works.
Vitamin K Is OK
维生素K是不是只是一个单一的营养物质;它的给定的一组天然存在的，脂溶性维生素，包括维生素K1和两种类型的维生素K2的名称。总的来说，它们可用于制造参与凝血蛋白是必不可少的。事实上，“K”来自德国的工作“koagulation，”类似的英文单词凝固。
维生素K是维护钙水平的关键，并参与钙转运。因此，维生素K用作强大和健康的骨骼的主要营养素。根据该检讨营养学和代谢在2017年6月，维生素K2节目承诺作为一种辅助治疗骨质疏松症，其特征在于由一个条件骨量丢失和骨头是脆，容易折断。
In addition, the nutrient may also aid cardiovascular health by reducingvascular calcification，a common but potentially serious condition that can increase the risk of stroke and blood clots. Vitamin K also may be useful in the treatment of diabetes, cancer and osteoarthritis.
Sources and Vitamin K Excess
The main sources of dietary vitamin K1 are green, leafy vegetables and plant oils. Vitamin K2 is in animal foods, including butter, egg yolks, some cheeses and fermented foods. Bacteria in the digestive tract can also synthesize vitamin K2 in the intestinal tract; however, the body is able to absorb very little of it, according to authors of the营养学和代谢评论。
Vitamin K is also available in supplement form, either as a synthetic or as an extract of the fermented soy product called Nattō.
The recommended daily intake for vitamin K set by the医学国家科学院食品与营养委员会（FNB）为120微克，男性和女性的所有90微克，包括那些谁是孕妇和哺乳期。这些地区发展局都不难通过均衡的饮食来实现的，而美国国立卫生研究院reports that vitamin K deficiency is very rare.
The FNB sets upper, tolerable intake levels (ULs) for vitamins that pose health risks when taken in excess. However,不存在UL为维生素K，因为目前还没有报告从食物或补充剂在总人口中的任何量维生素K过多不利影响。
Warfarin and Vitamin K
有一个例外。如果你正在服用血液稀释药物华法林，你必须要小心K，避免低和高维生素K水平。华法林，名牌香豆，被规定有助于防止血液凝块或禁止他们的成长。因为维生素K有助于你的血液凝结，它的工作原理华法林。
Maintaining a balance between the two is crucial, so it's important not to suddenly increase or decrease your intake of vitamin K. According toMichigan Medicine，you can consume whatever amount of vitamin K you would like, but the amount needs to remain consistent from day to day. So, if you eat a lot of green vegetables normally, don't suddenly stop eating them; if you take a vitamin K supplement, don't stop taking it.
如果你决定要增加或减少维生素K摄入量，它与你的医生讨论做的最好的方法是很重要的，因为你的药量可能需要调整向上或向下。
如果你正在服用华法林，你可能会得到定期进行血液测试，以确定其疗效。你的化验结果会提供您的凝血酶原时间（PT）和国际标准化比值（INR）值。你的INR值应保持在安全范围内;如果它们是太高或太低，则可能是因为华法林和维生素K.之间的相互作用的
Vitamin K functions to lower your INR values, which means that warfarin may not be effective for preventing a blood clot. Warfarin increases your INR values, which slows blood clotting. If warfarin is too effective, you will bleed more easily and quickly, which can be dangerous.
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食品中维生素K
由于华法林和维生素K之间的微妙互动，它跟踪你多少你的饮食中获得的是非常重要的。以下是一些常见vitamin K-containing foodsand their amounts of the nutrient per serving, according to the美元一个。
- 一杯芥蓝，boiled and drained — 1,062 micrograms
- 一杯煮熟的菠菜，水煮，沥干 - 889微克
- 一杯新鲜菠菜— 144 micrograms
- One cup collards熟 - 772微克
- One cup broccoli熟 - 220微克
- 一杯汤菜，cooked — 218 micrograms
- 一杯圆白菜，cooked — 163 micrograms
- 一杯菠菜鸡蛋面，cooked— 161 micrograms
- One cup chopped raw broccoli— 92 micrograms
- 一杯芦笋，boiled and drained — 91 micrograms
- 一杯秋葵，boiled and drained — 64 micrograms
- 一杯牛油生菜(such as Boston or Bibb) — 56 micrograms
- 一杯生菜— 48 micrograms
- 一杯绿叶生菜- 46微克
- 一杯青豆，cooked— 41 micrograms
- 一杯加糖的冷冻蓝莓— 41 micrograms
- 一杯青豆，cooked — 41 micrograms
- One cup raw celery- 30微克
- 一杯生黑莓- 29微克
- 一杯蓝莓原料- 29微克
- 半杯大蒜意粉酱— 18 micrograms
一定要检查所有的包装食品上的标签eat. According to NIH, few foods are fortified with vitamin K, but some meal replacement shakes and bars may be. In addition, many supplements can contain vitamin K. If you take a daily multivitamin or another type of nutrient supplement, confirm the amount of vitamin K it contains so you can add it to your daily total.