Vitamin D and Testosterone – What it Means For Men and Women

Vitamin D is a fat-soluble nutrient essential for the development of baseline characteristics for both men and women. Vitamin D plays a significant role in a range of bodily functions. One of the most crucial roles of Vitamin D is in calcium absorption for maintaining bone health. It assists in promoting bone growth and remodeling, thus helping to prevent osteoporosis and fractures.

This benefit is essential for women, particularly during post-menopause when the risk of osteoporosis increases. Vitamin D may boost testosterone production, with lower vitamin D levels being linked to low testosterone levels.

Find out how The Roots Brand’s high dose vitamin D supplement, Natural Barrier Support, can provide you with the proper vitamin D levels, boost the body’s immune support, and improve your overall health.

What is Vitamin D?

Vitamin D is a nutrient we eat and also a hormone our bodies make. This vitamin can be known as the sunshine vitamin due to its production through sun exposure. Vitamin D is not present in very many foods but is available as dietary supplements.

Vitamin D is also produced naturally by the sunlight when the UV rays hit the skin. This triggers the synthesis of Vitamin D. With the synthesis of vitamin D, the vitamin D receptor(VDR) allows the body to respond and produce the vitamin.

Vitamin D has many health benefits. These benefits include:

1. Helping the body fight disease

Vitamin D helps fight disease by boosting immune support. Vitamin D does this by boosting the production of microbe-fighting proteins. It also has anti-inflammatory properties and tempers the damaging response of inflammation.

2. Regulating mood and decreasing depression

Vitamin D deficiency has been shown to lead to a decrease in mood and increase the risk of depression. Vitamin D may be involved in the synthesis of serotonin, which is sometimes called the “feel good hormone.” Serotonin is a hormone that contributes to feelings of happiness. By using Vitamin D, you may be able to boost the production of serotonin in the brain and improve your mood.

3. Aids in weight loss

Several studies have shown that obese and overweight people often having lower Vitamin D levels than those with less body fat or lower body mass index. Some evidence suggests that getting enough Vitamin D could enhance weight loss and decrease body fat. This may be because Vitamin D alters the storage and formation of fat cells and increases hormones that can contribute to a decrease in body fat and body mass index.

4. Supports brain function

Vitamin D is neuroprotective. This refers to the strategies that help protect the brain and central nervous system. Vitamin D also supports neuroplasticity, the brain’s ability to adapt and reorganize itself. This is particularly important for learning and memory.

Vitamin D is important for brain development. It influences the growth and differentiation of neurons during development. This means it helps determine what type of cells they become and how they function.

5. Help with hormonal imbalances

Vitamin D can also influence the production of sex hormones, including estrogen, progesterone and free testosterone production in both men and women. Some studies have found that vitamin D supplementation can help increase levels of these hormones when they’re low. Thus, increasing vitamin D intake may help treat low testosterone.

Vitamin D supplementation has also been known to help the body absorb and retain calcium, which is important for bone health. There have also been studies to show that Vitamin D supplements help to fight chronic diseases, reduce cancer growth, control infections, and reduce inflammation.

Vitamin D has many potential benefits. Thus, making sure to get enough of this vitamin will support overall health. The daily recommended supplement dose of Vitamin D for healthy men and women is 600 IU for people ages 1 to 70 years and 800 IU for people over 70 years.

To get Vitamin D from the sun, can depend on where you live, but it is generally recommended to get between 10 to 30 minutes of midday sun daily for the most effective Vitamin D production.

Vitamin D in the blood is known as 25-hydroxyvitamin D or 25 (OH) D. This is measured in either nanomoles per liter (nmol/L) or nanograms per milliliter (ng/mL). One nmol/L is equal to 0.4 ng/mL. The levels of ng/mL or nmol/L are measured to determine the amount of 25 (OH) D in the body.

To determine the proper vitamin D concentration in the blood measured in ng/mL or nmol/L is:

  • Levels of 50 nmol/L (20 ng/mL) or above are average for good bone and overall health.
  • Levels below 30 nmol/L (12 ng/mL) are too low and might weaken your bones and affect your health.
  • Levels above 125 nmol/L (50 ng/mL) are too high and might cause health problems.

What is Testosterone?

Testosterone is one of the sex hormones that is essential for the development of reproductive systems and male fertility. Though testosterone is often associated with men, testosterone levels are important for both sexes. It is primarily produced by the testicles in men and in women by the ovaries and adrenal glands.

Though women tend to produce much smaller testosterone levels. Low testosterone is related to a variety of physical and mental health problems.

The Role of Testosterone in Men

Testosterone affects many physical and physiological aspects of the body. Total testosterone plays a role in the development of baseline characteristics in both healthy men and women. Leydig cells are the primary source of sex hormones in males. Impaired Leydig cell function can have can significant impacts on total testosterone production and the production of sex hormones.

Here are some of the roles that total testosterone plays in healthy male development:

Physical Development

Testosterone plays a key role in male physical development during puberty in healthy men. It is responsible for the deepening of the voice, growth of facial and body hair, and the development of the penis and testes.

Muscle and Bone Mass

Testosterone levels are involved in the development of the prostate, stimulate sperm production, and affects bone and muscle mass. It also plays a crucial role in bone density and helping to prevent conditions such as osteoporosis.

Sexual Function

In healthy men, normal testosterone levels drive libido (sexual desire) and is key to sexual function. It’s also necessary for sperm production. Decreased testosterone levels have been associated with lower sex drive and decreased sperm production. Low testosterone levels can also contribute to erectile dysfunction. While treating low testosterone can increase testosterone levels and prevent erectile dysfunction.

Mood and Quality of Life

Some research suggests testosterone deficiency can affect mood and mental capacity. Testosterone deficiency can lead to an increased risk of mood swings, depression, fatigue, and irritability.

Body Composition

Testosterone plays a role in the regulation of body fat in healthy men and women. Low amount total testosterone can lead to an increase in body fat, while high levels of total testosterone can lead to a decrease in body fat.

Heart Health

There has been an ongoing debate on testosterone supplementation and hormone and metabolic research regarding testosterone concentrations and levels and cardiovascular diseases. Some research suggests that serum testosterone concentrations can help protect the heart, while other suggest low serum levels and low testosterone concentrations are associated with various cardiovascular diseases.

Sex Hormones

The sex hormone binding globulin (SHGB) help determine the amount of sex hormones in the body. This is a protein produced in the liver that binds to certain hormones. The SHGB carries hormones throughout the bloodstream. Sex hormone binding globulin levels vary depending on age and gender, but in average adults, the amounts are:

  • Males: 10 to 57 nmol/L
  • Females (nonpregnant): 18 to 144 nmol/L

The Role of Testosterone in Women

While testosterone is typically associated with males, it also plays significant roles in women. There are not many significant differences in the role of testosterone for males and females other than males typically produce more testosterone.

In females, testosterone is produced in both the adrenal glands and the ovaries. Though testosterone levels are lower in women than in men, it still carries out critical functions for women’s health.

Testosterone is essential for bone strength and the development of lean muscle mass in women. It also plays a role in the maintenance of cognitive health and can influence mood and energy levels. Research suggests healthy testosterone levels in women are related to better memory, focus, and overall cognitive function.

Another important aspect of testosterone in women is its role in sexual health. It helps drive libido and plays a role in the health and function of reproductive tissues. Testosterone deficiency can lead to decreased sexual desire or response.

However, as with all hormones, balance is essential. Excess testosterone in women can have significant health risks. lead to issues like:

  • Excessive hair growth
  • Acne
  • Voice deepening
  • Irregular or absent menstrual periods.

These are symptoms often associated with conditions like polycystic ovary syndrome (PCOS). On the other hand, low testosterone can lead to:

  • Decreased muscle and bone strength
  • Mood swings
  • Fatigue
  • Reduced sexual desire

Therefore, maintaining appropriate testosterone levels is vital for the overall health and well-being of women.

In both sexes, maintaining an optimal balance of testosterone is important, as both low and high testosterone levels can lead to various health issues.

For those with low testosterone levels, testosterone replacement therapy is a way to increase testosterone levels and prevent health conditions. Though, for males, there still seems to be a debate as to whether testosterone replacement therapy or low testosterone levels might increase the various risk factors of prostate cancer.

The Link Between Vitamin D and Testosterone

The link between vitamin D and testosterone is still a topic of ongoing research. A few small-scale studies have suggested that Vitamin D supplementation might help increase testosterone levels in men who have low Vitamin D levels. For instance, a randomized controlled trial published in 2011 in the journal Hormone and Metabolic Research found that men who took a daily dose of Vitamin D for a year saw an increase in their testosterone levels.

Randomized controlled trials evaluated the relationship between vitamin D supplementation and testosterone levels. The hormone and metabolic research suggests an association of 25-hydroxyvitamin D- 25(OH)D – with testosterone levels in men. At the start of the study, the initial 25(OH) D levels indicated vitamin D deficiency.

The results of the study showed the vitamin D supplementation group had a significant increase in total testosterone levels and free bioavailable testosterone levels. In contrast, those who were in the placebo group and did not receive vitamin D supplementation, had no change in their total testosterone, or free bioavailable testosterone levels.

But there have been other studies that have shown vitamin D intake had no effect on testosterone levels at all.

Can Vitamin D Supplementation Boost Testosterone Levels?

So can vitamin D boost testosterone levels? The relationship between vitamin D and free testosterone, is not entirely clear. Though the randomized controlled trial mentioned above shows a positive correlation between vitamin D supplementation and testosterone concentrations, there are other studies that show vitamin D supplementation and the 25 (OH) vitamin D levels have no correlation between free testosterone levels.

2017 study showed that vitamin D supplementation did not increase testosterone levels in healthy men. Despite an increase in 25(OH) D levels and the use of vitamin D supplements, these men had no changes to their free testosterone levels.

So the relationship between vitamin D and testosterone may be inconclusive. But there are many health benefits to using vitamin D supplements which may still have a positive impact on testosterone deficiency.

What Are Vitamin D Supplements?

Vitamin D supplements are products that provide Vitamin D to the body. This vitamin is unique because the body can produce it when the skin gets sun exposure. But, because of factors like indoor lifestyles, geographic location, time of year, and the use of sunscreen, many people may have a vitamin D deficiency.

Diet alone often doesn’t provide enough Vitamin D intake, as very few foods naturally contain it. As a result, many people may require Vitamin D supplementation to achieve the recommended intake and improve vitamin D levels.

A Vitamin D supplement is typically available in two forms: D2 (ergocalciferol) and D3 (cholecalciferol). Vitamin D3 is more similar to the form of Vitamin D that your body naturally produces with sun exposure. While Vitamin D2 comes from plant and fortified food sources.

A Vitamin D supplement can range in doses and can come in various forms like:

  • Tablets
  • Capsules
  • Powders
  • Liquids
  • Gummies

What is a Vitamin D Deficiency?

Vitamin D deficiency is a condition that occurs when your body does not have enough vitamin D. According to the Endocrine Society, in clinical endocrinology, low vitamin D is very common among all age groups as vitamin D is not naturally produced in many foods. Vitamin D is unique among vitamins because your skin can produce it when it receives sunlight exposure.

Vitamin D deficiency is usually diagnosed by a simple blood test. The Endocrine Society recommends the measurement of serum vitamin 25 (OH) D levels as the initial diagnostic test to determine proper vitamin intake. The vitamin D concentration can be determined by the 25 (OH) D levels in blood samples.

If you’re deficient, an internal medicine doctor might recommend you take daily vitamin D supplements, like Roots Brand’s Natural Barrier Supprt. You should also try to get more sun exposure.

What Are the Signs of a Vitamin D Deficiency?

Vitamin D deficiency can cause problems with your bones, muscles, and overall health. Low vitamin D levels are common and affect around 1 billion people worldwide. Here are some of the signs of low vitamin D and vitamin D deficiency:

1. Fatigue

Low vitamin D levels can cause feelings of chronic fatigue. While feeling tired is very common, your vitamin D status may be the cause. This may be because vitamin D helps the part of the cell that produces energy (the mitochondria) use oxygen and power parts of the body.

2. Bone Pain

When vitamin D levels are low, the body isn’t able to properly absorb calcium. This can increase the risk of bone pain.

3. Muscle Weakness

Similarly to causing fatigue, vitamin D deficiency can result in muscle weakness due to impaired mitochondrial function and reduced production of energy in the muscles.

4. Depression

Vitamin D plays a role in mood regulation, and a deficiency can result in feelings of depression or decreased mood. Vitamin D may be involved in the synthesis of serotonin, which is sometimes called the “feel good hormone.” Serotonin is a hormone that contributes to feelings of happiness. By using Vitamin D, you may be able to boost the production of serotonin in the brain and improve your mood.

Signs of Too Much Vitamin D

High levels of vitamin D in the body can cause a range of symptoms and health problems. This condition is rare and is usually a result of taking extremely high doses of vitamin D supplements over a long period of time, rather than consuming too much vitamin D through diet or sun exposure.

The potential effects of having a high vitamin D status are:

  • Hypercalcemia

Vitamin D helps your body absorb calcium. Too much vitamin D can cause an excess of calcium in the blood, a condition known as hypercalcemia. This can cause a variety of symptoms, including nausea, vomiting, poor appetite, frequent urination, constipation, weakness, and kidney problems.

  • Bone Loss

High levels of vitamin D can cause the body to absorb too much calcium from food, which can lead to high levels of calcium in the blood. Over time, this can cause a loss of bone density.

  • Kidney Damage

High calcium levels can cause kidney stones, and in severe cases, may result in kidney damage.

  • Heart Problems

Too much calcium in your blood can affect your heart and blood vessels. It might lead to the formation of plaque in your arteries. This can increase your risk of a heart attack or stroke.

  • Nervous System Problems

Low vitamin D can result in nervous system problems. These symptoms can include confusion, disorientation, problems with concentration, dizziness, and even seizures.

High dose vitamin D supplements raise the likelihood of having vitamin D concentration in your blood. The Roots Brand can help you maintain a proper vitamin D status and improve bone health with our Natural Barrier Support.

How Does Vitamin D and Testosterone Help Women?

Some research has shown an association between vitamin D and total free testosterone alone, in women. Using a variety of measures, including vitamin D, steroid hormones, sex hormone-binding globulin, etc., researchers found vitamin D was positively correlated with total free testosterone levels.

Thus, Vitamin D and testosterone play a significant role in women’s health. The vitamin D endocrine system involves the skin, liver, and kidney functions that are essential for overall health.

Having enough vitamin D and testosterone levels contributes to maintaining strong and healthy bones. This helps to prevent conditions like osteoporosis, which is a common condition in women who often have smaller, thinner, and less dense bones than men.

Similarly, testosterone is important for women’s bone density, thus low vitamin D and testosterone levels both might contribute to more brittle bones.

Find support for vitamin D deficiency with high dose vitamin D supplements like Natural Barrier Support.


Both vitamin D and testosterone play vital roles in maintaining overall health in men and women. Low testosterone and low vitamin D can negatively impact physical health. While both vitamin D and testosterone are critical for maintaining muscle and bone mass, cognitive function and mood.

This connection is not fully understood. But there is little doubt in the benefits of vitamin D and testosterone. While testosterone replacement therapy may increase serum testosterone levels and improve low testosterone, vitamin D may be a natural way to treat low testosterone while improving other areas of physical health.

You can find high dose vitamin D support with The Roots Brand. Our Natural Barrier Support is a propriety blend of vitamin D, zinc sulfate, and vitamin C that boosts your vitamin D status without getting too much vitamin D.

Vitamin D plays a key role in the immune system by modulating the immune responses of the vitamin D receptor and T and B cells functions. Find out how to treat low testosterone while improving your vitamin D status and overall health with Natural Barrier Support.