Updated: Sep 18, 2020
D3 deficiency has serious consequences for good health.
The vast majority of the population is deficient, and there’s reason to believe it underlies a wide range of major health problems.
So how do you know if you’re deficient? The following symptoms are signals and should be brought to your doctor’s IMMEDIATE attention: 1. Bone Loss: A diagnosis of low bone mineral density may be a major sign of vitamin D deficiency. Getting enough of this vitamin is important for preserving bone mass as you get older. Many older women who are diagnosed with bone loss believe they need to take more calcium. However, they may be deficient in vitamin D as well. 2. Getting Sick or Infected Often: One of vitamin D’s most important roles is keeping your immune system strong so you’re able to fight off the viruses and bacteria that cause illness. Vitamin D plays an important role in immune function. 3. Chronic Fatigue and Tiredness: Feeling tired can have many causes and vitamin D deficiency may be one of them. In one case, a woman who complained of chronic daytime fatigue and headaches was found to have a D3 blood level of only 5.9 ng/ml. (Anything under 20 ng/ml is deficient). When the woman took a vitamin D supplement, her level increased to 39 ng/ml and her symptoms resolved. 4. Bone and Back Pain: Bone pain and lower back pain may be signs of inadequate vitamin D levels in the blood. Vitamin D is involved in maintaining bone health through a number of mechanisms. For one, it improves your body’s absorption of calcium. People with vitamin D deficiency are nearly twice as likely to experience bone pain in their legs or joints compared to those with blood levels in the normal range. 5. Depression: A depressed mood may also be a sign of deficiency. In review studies, researchers have linked vitamin D deficiency to depression, particularly in older adults. Some studies have found supplementing with D improves mood. When you notice persistent health issues like these, you may want to consider a quality D3 + Vitamin K2 supplement. 2 Things You NEED to KNOW when selecting a D3 Supplement 1. Warning: Never take Vitamin D Without Vitamin K2 Just as important as vitamin D3 is taking vitamin K2! Taking Vitamin D without vitamin K could actually be harmful to your Health! When it comes to calcium metabolism, vitamins D and K work together. Both play important roles. Vitamin D gets calcium into your blood and Vitamin K gets it to the bones and prevents the calcium from accumulating in your arteries, kidneys or heart. You don't want rogue calcium going to the wrong places, causing joint stiffness or arterial plaque. Vitamin K2 insures that your body uses calcium properly. 2. Most D3 Supplements are NOT absorbable. When D3 cannot be absorbed, your body is unable to assimilate and youwill not get the benefits. So you still end up with the symptoms. The folks at PuraTHRIVE have spent the last year to come up with a solution... a highly specialized liposomal formula that will deliver the highest quality D3 + Vitamin K2 directly to your cells and optimize your health! In this special report, you’ll discover a unique delivery mechanism that shuttles this essential nutrient directly into your cells.
Vitamin K2 is crucial for maximizing the benefits and minimizing the risks of vitamin D. 
Here’s how it works: one of the ways in which vitamin D aids the body is by helping it absorb calcium—this is the mechanism by which it prevents rickets and osteoporosis (because bones require calcium to stay strong and healthy).
Here’s the catch, though: new research has revealed that in order for all that absorbed calcium to be properly directed to the skeleton, sufficient levels of vitamin K2 are required.
Dr. Rheaume-Bleue, the author of Vitamin K2 and the Calcium Paradox: How a Little Known Vitamin Could Save Your Life, warns:
"There are so many people on the vitamin-D-mega-dose bandwagon, taking more and more of vitamin D. And it could absolutely be causing harm if you are lacking the K2 to complete the job to get the calcium where it's supposed to be. 
A prominent example of misplaced calcium is atherosclerosis, a hardening of the arteries characterized by arterial calcium deposits. Atherosclerosis is a major sign of serious heart disease and a significant risk factor for stroke and heart attack, so it shouldn’t be taken lightly.
Researchers dug deeper into this concern by comparing supplementation with vitamin D plus K2 versus supplementation with vitamin D alone. The results were conclusive: vitamin D combined with vitamin K2 protected against cardiovascular calcification while vitamin D alone did not. 
This means that taking too much vitamin D without the balancing effect of vitamin K2 can be worse than taking neither supplement.
The way forward
The takeaway is that vitamin D3 works even better when combined with vitamin K2, which also prevents the toxicity that can occur in the presence of excess calcium.
You can get vitamin K2 from a number of food sources, including cheese (especially Gouda, Brie, and Edam), fermented vegetables, pretty much any green fruit or vegetable, and a Japanese fermented soy product called natto, which contains the full daily requirement of vitamin K2 in just half an ounce.
If you choose to supplement, purchase the form of vitamin K2 called “MK-7” (as opposed to “MK-4) — it stays in the body for much longer, thus making it much easier to achieve an optimal blood level.
Not All Vitamin D Supplements are Created Equal
Most D3 Supplements are NOT absorbable. When D3 cannot be absorbed, your body is unable to assimilate and you will not get the benefits. So you still end up with the symptoms.
We recommend PuraTHRIVE Vitamin D3 with M-K7: a formula that’s “liposomalized”—meaning it’s specifically blended to make D3 + Vitamin K2 bind to phosphlipids (fats) that increase its bioavailability more than 20 times.
Which Critical Vitamin Burns Belly Fat?
As summer approaches and your bathing suit looms, you might be cursing your sweet tooth for the belly bulge you can't seem to shed. But deficiency in one critical vitamin could be responsible.
What is it? Vitamin D.
Dr. Keri Peterson, medical contributor and columnist at Women’s Health magazine shares these insights in her book “The Vitamin D Diet: the revolutionary plan that melts stubborn fat fast.” Dr. Peterson claims that adding Vitamin D to your diet can result in the loss of dangerous belly fat around your waistline.
“What we now know from new studies is that Vitamin D causes fat cells to become more metabolically active, which helps you burn more calories,” says Dr. Peterson. “And we’ve also learned that this is fantastic for people who carry their weight around their middle—that it helps you burn it there more easily.
So the moral of the story is… With Vitamin D you will burn more fat—especially belly fat. Vitamin D can help you lose lard all over, but it's particularly helpful for the pounds above your belt.
Over 70% of Americans are vitamin-D deficient… not only will D burn your belly fat, but it is also crucial in strengthening bones, fighting depression, boosting immunity, helps with back and muscle pain and more.
But warning: Not all Vitamin D is created equal!
Do you get enough vitamin D? Or, equally important, are you getting the benefit from your vitamin D? Lack of regulation in the supplement industry allows Vitamin manufacturers, who answer to no one in terms of the efficacy of their products, to flood the market with useless vitamins, simply to make money!
When looking for a good Vitamin D supplement … it is important to note that most Vitamin D supplements are NOT absorbable.
A formula that’s “liposomalized”—meaning it’s specifically blended to make D3 + Vitamin K2 bind to phosphlipids (fats) that increase its bioavailability more than 187x times.