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For years, we've heard about vitamin D as key to keeping our bones strong, especially in old age or during the winter. But recently, science has invited us to go a step further: the true symphony for our bone health and immunity isn't played alone. It requires a finely tuned duo. We're talking about vitamin D3 and vitamin K2 , two nutrients that work in perfect harmony to strengthen the body from within.
Vitamin D3: much more than “the one from the sun”
Vitamin D3 (cholecalciferol) is probably one of the most studied and recommended vitamins in recent years. The reason is simple: it's involved in multiple essential processes in the body. Not only does it contribute to the maintenance of bones and teeth, but it also actively participates in the functioning of the immune system, calcium metabolism, muscle health, and even mood.
Our bodies can synthesize it through sun exposure, but the truth is that a large portion of the population has insufficient levels, especially during the colder months, in older people, or in those who live primarily indoors.
But… what does vitamin K2 do?
Vitamin K2 , less well-known but equally essential, acts as a kind of guide. Its mission is to help calcium—the mineral we so associate with bone strength—be deposited in the right place: the bones. At the same time, it prevents it from accumulating in arteries and soft tissues, where it can cause unwanted effects.
Without enough K2, vitamin D3 supplementation may not be as effective as we think. Or even, in some cases, counterproductive. Therefore, taking them together is a smart, evidence-based decision.
An essential tandem for bones and immunity
Viewed separately, vitamins D3 and K2 are already important. But it's when combined that they reveal their true potential. Together:
- They contribute to optimal bone mineralization , helping to prevent decalcification and fragility over time.
- They strengthen the immune system , especially in times of greater exposure to viruses.
- They support cardiovascular health by promoting proper distribution of calcium in the body.
It's the ideal combination for those who want to age with strength, mobility, and a robust and vigilant defensive system.
And what does science tell us?
In June 2023 , the prestigious scientific journal Frontiers in Nutrition published a review highlighting the synergistic role of vitamin D3 and K2 in bone and cardiovascular health. According to the authors, combined supplementation could have a key preventive effect against degenerative bone diseases and arterial calcification. The evidence continues to grow.
Our proposal at Longevitas: wise, simple, effective
At Longevitas, we believe in supplementation that respects biology and potency. That's why our vitamin D3 (4,000 IU) and vitamin K2 (menaquinone MK-7, 90 µg) formulas are designed to work together, with maximum absorption and without unnecessary additives. A simple, precise, and powerful combination for those who want to take care of themselves intelligently.
It's not about adding for the sake of adding, but rather aligning what your body needs with what time can give you.
“Health is not simply the absence of disease. It is the silent manifestation of a body in balance.”
— Dr. Ángel Durántez, specialist in preventive medicine.
Would you like to learn more about supplementing your routine with Omega 3? Visit Longevitas.es and discover how you can start taking care of your health intelligently today. Vitamin D3 (4,000 IU) Vitamin K2 (Menaquinone MK-7, 90 µg)
