October 12, 2021

How to Tell if You Have a Vitamin D Deficiency—and What to Do About It

The great thing about the warmer months is that our bodies can get more vitamin D, if we spend more time outside in the sun. It plays many important roles in maintaining good health. It helps with hormone regulation, bone health, immune system health, and overall health.

Sunlight is a great way to accumulate Vitamin D. A lot of people can get adequate from just 15-30 minutes of sunlight exposure. Sun exposure is not the only way. It can also be obtained from foods such as oily fish and milk or supplements.

The average person needs 600 to 800 IU of vitamin A daily, but some people require more. This applies to people with darker skin, seniors, those who rarely get in the sun and people with limited fat absorption.

Our bodies feel the consequences of a lack of vitamin D. The deficiencies can cause a variety of symptoms including fatigue, muscle pain, hair loss, and behavioral changes.

Research has shown that it is a common deficiency in a significant number of people. If you are concerned about your vitamin D levels, it’s a good idea to consult a doctor. The recommendation of blood test by your doctor is preferable in order to determine your Vitamin D levels. . Anything below 20 ng/ml will be low.

These are signs that you might be low in it.


  • Taylor Engelke, a Wisconsin-based registered nutritionist and dietitian, is the author.
  • Alana Kessler, a registered dietitian, is the founder of Be Well by AK.

Fatigue due to Vitamin D Deficiency

Research shows that people with low levels may feel fatigue. Sometimes, this fatigue can be quite severe.

Taylor Engelke, a registered dietitian nutritionist explains that fatigue could also be caused by too much of it rather than too little.

She says that the levels in excess of 250nm/mL are dangerous. This would be possible if someone were taking more than 10,000 IU per day.

Muscle Weakness and Muscle Pain

Research suggests that their deficiencies could lead to muscle weakness and pain. Talk to a healthcare professional if you are experiencing severe muscle pain or are not sure what the cause is.

Hair Loss – Vitamin D Deficiency

Engelke says that low vitamin D levels can cause hair loss and slow hair growth.

She also said that an autoimmune condition called alopecia, where hair stops growing due to follicle deaths, has been linked with their deficiency.

Why is hair loss possible due to its deficiency? This Byrdie article will explain everything. The keratin cells that make it in our skin are called keratinocytes. They are responsible for metabolizing vitamin D in our skin. If the body doesn’t get them enough, the cells called keratinocytes can have difficulty facilitating hair growth. This could lead to hair loss.

Hair loss is not usually due to its deficiencies. Hair loss can be caused by hormones, genetics and pregnancy.

You Get Sick Frequently

Immunity plays an important role in vitamin D. Research shows that vitamin D deficiencies are associated with a weaker immune response. It’s important that you know if you are frequently sick, you might be suffering from vitamin D deficiency.

It’s deficiency can lead to increased risk of infection and autoimmune diseases.

Engelke explains that it plays a significant role in immunity. This is partly due to the way white blood cells function and develop.

“Most people can benefit by 4000IU daily supplementation for upper respiratory tract infections, inflammation, and other chronic diseases,” states Alana Kessler (registered dietitian and founder at Be Well by AK).

Bone Pain – Vitamin D Deficiency

Vitamin D is useful to aid our bodies absorb calcium. Kessler explained that it acts as an enzyme to help calcium enter the bones.

There is no requirement of Vitamin D for osteoporosis, osteomalacia, bone pain, and other skeletal and connective tissue issues.

She says that if there is not enough vitamin D, the parathyroid will take calcium out of the bones as it cannot properly metabolize it.”

Depression and other Behavioral Changes

Kessler states that although there is no scientific evidence to support vitamin D as a treatment for depression, it is a common cause. However, if the system isn’t working correctly, then the body is dysfunctional systemically. This can cause fatigue, brain fog, and inflammation.

She says that if bones don’t get enough calcium, and muscles and connective tissues are working in excess to support the skeleton, people can experience exhaustion from just their daily activities. This can have a negative impact on your mental health, hormone balance, overall wellbeing, and even your mental health over time.

Weight Gain

Although there isn’t any direct link between vitamin deficiency or weight gain, research has shown that low levels of vitamin D can lead to obesity. Research suggests that people with obesity may need more to reach the same levels in their bodies as those without obesity.

We need to do more research before we can make any conclusive statements about the relationship between vitamin D intake and weight.

They plays an important role in our health and well-being. The deficiency can cause symptoms in your body. These include fatigue, bone and muscle pain, mood changes, decreased susceptibility to infection and other health issues. You should consult your doctor if you suspect you may be deficient or have other concerns.