Top Vitamin D Benefits

Long-term studies have shown that adequate vitamin D can reduce cancer risk and reduce fractures when taken with calcium. Many cancer research agencies and institutions now stress the importance of getting adequate vitamin D. This is especially true for those with a genetic predisposition for certain cancers like breast, prostate, skin, lung, pancreatic, and colon cancer. Breast and colon/colorectal cancers have been found to be the most closely related to lack of sunshine. And men, too, are at risk; more research found that men who lacked sunshine had a higher incidence of cancer and died sooner as a result.

New York nutrition specialist Michael Greger MD, FACLM, stated (in 2016) that scientists reviewing 56 trials involving 100,000 people who took vitamin D supplements for four years found that they lived four to five years longer than those who didn’t. And specifically, they lowered the risk of dying from cancer. Research also shows that both incidences of and death rates from certain cancers were lower among people living in southern latitudes where sunlight exposure is high, compared to those living in northern latitudes.

In studies of cancer in mice, vitamin D was found to slow or prevent cancer because it:

1. 1. Promoted cellular differentiation (so cells become specialized in order to perform a specific function rather than reproduce exactly the same)
   2. Decreased cancer cell growth
   3. Stimulated cancer cell death
   4. Reduced tumor blood vessel formation (which reduced the tumor’s ability to live)

Read more about the latest studies involving calcium and vitamin D reducing the risk of cancer.

Did you know that vitamin D-deficient people are twice as likely to develop Alzheimer’s and dementia? A 2015 article states that an international team conducted research studying 1,600 seniors for six years. They found that those who were severely deficient in vitamin D were far more likely to develop Alzheimer’s or dementia than those who had adequate levels. Participants who were mildly deficient had a 53% increased risk, and those severely deficient had a 125% increased risk.

Interestingly, people who have Alzheimer’s or dementia are more likely to break a bone. How are they related? Alzheimer’s is associated with increased hip fracture risk because many Alzheimer’s patients are homebound, sunlight-deprived, and older. This is doubly troublesome since, with aging, less vitamin D is converted to its active form, and decreased bone density is linked to reduced vitamin D (from supplements and sunlight). A 2010 study of nursing home residents with dementia found sun exposure to be extremely limited at less than 15 minutes per week.

A person with dementia is up to three times more likely to fracture a hip than a cognitively intact older adult. This is because vitamin D receptors in the brain may protect and detoxify messenger cells that enable the brain to send and receive signals to other areas of the body (like those making muscles work and legs walk.) These vitamin D receptors are reduced in Alzheimer’s and dementia patients. Also, an increase in parathyroid hormone is found in Alzheimer’s patients with hip fractures, but not in Alzheimer’s patients that haven’t broken bones. Since vitamin D helps balance this hormone, scientists feel low vitamin D further increases risks due to hyperparathyroidism.

Too little sunshine puts your heart at risk! Evidence is growing that vitamin D deficiency increases the risk of heart disease, congestive heart failure, high blood pressure, and chronic blood vessel inflammation associated with the hardening of arteries. Low levels are also linked to heart disease risk factors such as obesity, diabetes, and atherosclerosis (the formal term used to describe hardening of the arteries).

Even though women are more often the target of this outcome, a 2008 study showed that lack of vitamin D increased heart attacks in men. Another study done in the same year found that not only is low vitamin D associated with higher risk of cardiovascular disease, it’s linked with death due to all types of illnesses, including heart disease.

Why does vitamin D affect blood pressure? Vitamin D increases an enzyme called renin which regulates the amount of blood and other fluid that goes through veins and arteries. Renin also balances the amount that arteries constrict. So, too low levels of vitamin D and renin can negatively affect blood pressure. This was found to be true of women with high blood pressure and low vitamin D.

What causes diabetes? Type 2 diabetes has usually been linked to poor diet. However, when scientists analyzed 21 studies from around the world involving 76,220 participants, there was another link. There was a significant association between lack of sunshine and/or vitamin D supplements with a high risk of type 2 diabetes. This was shown across a broad range of low vitamin D levels.

The elderly may be most at risk. A 2011 study of older subjects found that getting enough vitamin D protects against type 2 diabetes. The association between lack of vitamin D and type 2 diabetes may be because it affects glucose levels and β-cell function. These directly relate to insulin secretion and insulin resistance.

Unfortunately, the link is also found in kids with type 1 diabetes. Vitamin D-deficient children have a far greater prevalence of pre-type 1 diabetes and type 1 diabetes.

How does vitamin D affect insulin? Both abnormal vitamin D levels and abnormal glucose levels are associated with high inflammation. It may be that vitamin D deficiency increases inflammation, and this inflammation is detrimental to the ability to secrete insulin. This could be because it reduces the availability of vitamin D receptors in the body which are required to make insulin.

The benefits are stacking up that a mother needs to give her child vitamin D even before she/he is born. In 2007 the Canadian Pediatric Society announced that pregnant women and nursing mothers should take a daily supplement of 2,000 IUs. Vitamin D deficiency can lead to serious repercussions in a developing fetus.

Experts from research institutes worldwide called for international agencies to “reassess as a matter of high priority” outdated dietary recommendations for vitamin D. This was meant for both the mother and unborn child.

Research from 2013 states without adequate vitamin D taken during pregnancy, preeclampsia, gestational diabetes, and cesarean section are more common. And newborns risk low birth weight, rickets, hypocalcaemia, asthma, and type 1 diabetes. Vitamin D deficiency during pregnancy also affects neurodevelopment and the baby’s immune system, even though it only shows up decades later. This study also says that vitamin D helps a woman get pregnant in addition to maintaining normal pregnancy, supporting fetal growth through the delivery of calcium, secreting placental hormones, and reducing inflammation.

Healthy children need 1,000 IU of vitamin D per 25 pounds of body weight and D3 levels should be more than 50 ng/mL year-round. Some research shows that vitamin D deficiency may contribute to the development of some diseases, including schizophrenia, autism, respiratory tract infection, newborn seizures (usually due to low calcium), heart failure, atherosclerosis, brain tumors, epilepsy, and viral pneumonia.

According to the Vitamin D Council, damage to unborn children done by deficiency may be permanent and cannot be fully reversed by taking vitamin D after birth. Vitamin D deficiency during pregnancy endangers the mother’s life and puts the child’s brain and immune system at risk. Yet prenatal multivitamins have little effect since they only contain 400 IU of vitamin D3. The Council says, “over 95% of pregnant women have D3 levels that indicate chronic substrate starvation.”

Want some evidence? Watch the testimonial of Dr. Amie Harper who took AlgaeCal Plus during her pregnancy.

Vitamin C is the classic go-to for an immune boost when you’re feeling under the weather, but vitamin D plays a critical role in keeping your immune system strong. Like vitamin C, supplementing with it reduces the likelihood of getting the flu according to 2010 research, especially in schoolchildren with asthma.

Even more recent research finds that vitamin D also helps prevent all types of autoimmune diseases. Why? It is called a “natural immune modulator,” regulating many immunological functions affected by inflammation. Low vitamin D may contribute to chronic inflammatory illnesses including lupus, rheumatoid arthritis, and cirrhosis. Vitamin D prevents autoimmune diseases including multiple sclerosis and inflammatory bowel disease (IBD) because of its effects to activate our powerful immune-boosting T lymphocyte cells and cytokines.

It’s a bit of a vicious circle that people with advanced arthritis often don’t go outside enough, and yet it is lack of sunshine that may partly cause their discomfort. Vitamin D deficiency and its relationship with inflammation have been linked particularly with rheumatoid arthritis.

A 2014 study from Oxford University found definite links between vitamin D and increased disease, inflammation, and bone loss in patients with rheumatoid arthritis. Swollen, tender joints, joint pain, and morning stiffness were associated with low levels of vitamin D. And rheumatoid arthritis patients with osteopenia or osteoporosis had even lower amounts.

Vitamin D has been found to balance inflammation by regulating proinflammatory cells. This is why it might help prevent inflammatory diseases including rheumatoid arthritis. New evidence suggests supplementing decreases risks. Also since low vitamin D increases poor outcomes of acute infections, supplementing could help heal inflammation and infections.

When you have kidney disease, your kidneys are unable to convert vitamin D into its active form. Difficulties in metabolizing vitamin D play a major role in a malfunctioning parathyroid gland and the hormones it produces, which can cause hyperparathyroidism. The progressive decline in vitamin D in chronic kidney disease is the result of several factors that limit the ability of the failing kidney to maintain the levels of vitamin D. But developing hyperparathyroidism has actually been linked to not taking enough vitamin D in supplements or food, too.