Improve insulin sensitivity; Support cognitive health; Improve symptoms of varicose veins. Who will Benefit from Taking Liposmal Vitamin D3 + K2? Vitamin D deficiency is very common. In US, 41% of adults in the United States are vitamin D deficient and 30% is vitamin D insufficient. Vitamin D and vitamin K work synergistically as a perfect pair to support various health conditions. Many factors can affects your ability to get sufficient amount vitamin D and Vitamin K2: Being in an area with high pollution; Using sunscreen; Spending more time indoors; Inadequate sun exposure; Having darker skin; Routinely taking anticoagulants; Vegans or vegetarians; Older adults who produce vitamin D and absorb vitamin K2 less efficiently.