Vitamin D3 K2 Komplex | Shield: what are common causes?

The Vitamin D3 K2 Komplex | Shield by MyBody-X is a dietary supplement combining vitamin D3 (cholecalciferol) and vitamin K2 (menaquinone). Common causes of deficiency include inadequate sun exposure (especially in northern latitudes or with darker skin), low dietary intake (fatty fish, eggs, fermented foods), and certain medical conditions (e.g., malabsorption, kidney disease) or medications. Vitamin D3 supports calcium absorption and bone health, while vitamin K2 helps direct calcium into bones and teeth and may inhibit vascular calcification. The 'Shield' label suggests cardiovascular protection, but this is not supported by the provided context. This is a consumer product without clinical validation in this context. A blood test for vitamin D (25-OH-D) is advisable before supplementation. Evidence is based on general nutritional guidelines, not on specific studies for this product.