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Top 10 Most Common Vitamin Deficiencies: What You Need to Know

Vitamin deficiencies can have a significant impact on your health, affecting everything from your energy levels to your immune system. Understanding which deficiencies are most common can help you take proactive steps to maintain optimal health. Here’s a look at the top 10 most common vitamin deficiencies, ranked from most to least prevalent, along with how you can address them.

Vitamin Deficiencies

1. Vitamin D Deficiency


  • Vitamin D deficiency is extremely common, affecting about 1 billion people worldwide. In the U.S., estimates suggest that around 42% of adults are vitamin D deficient.


  • Why it’s Common: Vitamin D deficiency is widespread due to limited sun exposure, especially in northern latitudes or during winter months. It’s also found in few foods, making it harder to get sufficient amounts through diet alone.


Symptoms:

- Fatigue

- Bone pain

- Muscle weakness

- Increased susceptibility to illness


- Harvard T.H. Chan School of Public Health – [Vitamin D](https://www.hsph.harvard.edu/nutritionsource/vitamin-d/)


2. Vitamin B12 Deficiency


  • Vitamin B12 deficiency affects approximately 6% of the U.S. population, with prevalence rising to over 20% in individuals over 60 years old.


  • Why It’s Common: Vitamin B12 deficiency is prevalent, particularly among older adults and vegetarians or vegans, as it is mainly found in animal products.


Symptoms:

- Fatigue

- Memory loss

- Tingling in hands and feet

- Difficulty walking


Sources:

- National Institutes of Health – [Vitamin B12](https://ods.od.nih.gov/factsheets/VitaminB12-HealthProfessional/)


3. Vitamin C Deficiency


  • Vitamin C deficiency, though relatively uncommon in developed countries, still affects about 7% of the U.S. population. In developing countries, the rate can be much higher.

  • Why It’s Common: Despite its presence in many fruits and vegetables, poor dietary choices and smoking can lead to deficiencies.


Symptoms:

- Scurvy (gum bleeding)

- Dry skin

- Weak immune response


Sources:

- Mayo Clinic – [Vitamin C Deficiency](https://www.mayoclinic.org/symptoms/vitamin-c-deficiency/basics/definition/sym-20050714)


4. Vitamin A


  • Vitamin A deficiency affects around 250 million children under the age of five in developing countries. In the U.S., deficiencies are rare but can still occur in individuals with malabsorption issues.

  • Why It’s Common: Deficiencies often occur in developing countries where diets are lacking in fruits and vegetables rich in vitamin A. It can also be common in individuals with fat malabsorption issues.


Symptoms:

- Night blindness

- Dry skin

- Weak immune function


Sources:

- World Health Organization – [Vitamin A Deficiency](https://www.who.int/news-room/fact-sheets/detail/vitamin-a-deficiency)


5. Vitamin E


  • Vitamin E deficiency is rare but is estimated to affect less than 1% of the U.S. population. However, it is more common among individuals with certain medical conditions affecting fat absorption.

  • Why It’s Common: Vitamin E deficiencies are rare but can occur due to malabsorption disorders or very low-fat diets.


Symptoms:

- Muscle weakness

- Vision problems

- Immune system issues


Sources:

- National Institutes of Health – [Vitamin E](https://ods.od.nih.gov/factsheets/VitaminE-HealthProfessional/)


6. Folate (Vitamin B9)


  • Folate deficiency affects about 10% of women of childbearing age in the U.S., with a higher prevalence in developing countries.

  • Why It’s Common: Folate deficiencies are common in people with poor dietary intake, particularly in those who don’t consume enough leafy greens or fortified foods.


Symptoms:

- Fatigue

- Weakness

- Pale skin

- Shortness of breath


Sources:

- Office of Dietary Supplements – [Folate](https://ods.od.nih.gov/factsheets/Folate-HealthProfessional/)


7. Vitamin K


  • Vitamin K deficiency is relatively uncommon but can occur in approximately 1% of the U.S. population, particularly among those with specific health conditions or on long-term antibiotic therapy.

  • Why It’s Common: Vitamin K deficiencies are rare but can occur due to conditions that affect the absorption of fats or the use of certain medications.


Symptoms:

- Easy bruising

- Excessive bleeding

- Bone weakness


Sources:

- National Institutes of Health – [Vitamin K](https://ods.od.nih.gov/factsheets/VitaminK-HealthProfessional/)


8. Biotin (Vitamin B7)


  • Biotin deficiency is quite rare, affecting less than 0.1% of the population. It is more likely in individuals with genetic disorders or those who consume raw egg whites excessively.

  • Why It’s Common: Biotin deficiencies are uncommon but can occur in people with genetic disorders or those who consume raw egg whites in large quantities over long periods.


Symptoms:

- Hair loss

- Skin rashes

- Brittle nails


Sources:

- Mayo Clinic – [Biotin Deficiency](https://www.mayoclinic.org/symptoms/biotin-deficiency/basics/definition/sym-20050880)


9. Pantothenic Acid (Vitamin B5)


  • Pantothenic acid deficiency is rare but can occur in severe malnutrition cases. Its prevalence is not well-documented but is considered less common in developed countries.

  • Why It’s Common: Deficiencies in pantothenic acid are rare but can happen due to severe malnutrition or certain medical conditions.


Symptoms:

- Fatigue

- Digestive issues

- Mood changes


Sources:

- National Institutes of Health – [Pantothenic Acid](https://ods.od.nih.gov/factsheets/VitaminB5-HealthProfessional/)


10. Choline


  • Choline deficiency affects about 90% of Americans not meeting the recommended intake levels, with significant gaps in choline intake observed in various populations.

  • Why It’s Common: Choline deficiencies can occur in individuals with poor dietary intake, as this nutrient is found in a limited range of foods.


Symptoms:

- Liver damage

- Muscle damage

- Cognitive issues


Sources:

- National Institutes of Health– [Choline](https://ods.od.nih.gov/factsheets/Choline-HealthProfessional/)


How Key Basis IV Can Help


At Key Basis IV, we understand that managing vitamin deficiencies is crucial for maintaining overall health and well-being. We offer personalized blood tests to identify any vitamin, mineral, or antioxidant deficiencies you might have. Our comprehensive testing helps pinpoint specific needs so you can address them effectively.


In addition to our detailed testing services, we provide at-home IV therapy and customized supplements tailored to your unique health profile. Our goal is to help you restore balance and enhance your health with targeted solutions.


Don’t let deficiencies impact your quality of life. Contact Key Basis IV today to schedule your personalized blood test and start on the path to optimal health with our expert support.


Contact Us

(305) 998-0047


Your health is our priority, and we're here to help you achieve your wellness goals.


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Sources:

1. Harvard T.H. Chan School of Public Health. (n.d.). Vitamin D. Retrieved from [Harvard](https://www.hsph.harvard.edu/nutritionsource/vitamin-d/)

2. National Institutes of Health. (n.d.). Vitamin B12. Retrieved from [NIH](https://ods.od.nih.gov/factsheets/VitaminB12-HealthProfessional/)

3. Mayo Clinic. (n.d.). Vitamin C deficiency. Retrieved from [Mayo Clinic](https://www.mayoclinic.org/symptoms/vitamin-c-deficiency/basics/definition/sym-20050714)

4. World Health Organization. (n.d.). Vitamin A deficiency. Retrieved from [WHO](https://www.who.int/news-room/fact-sheets/detail/vitamin-a-deficiency)

5. National Institutes of Health. (n.d.). Vitamin E. Retrieved from [NIH](https://ods.od.nih.gov/factsheets/VitaminE-HealthProfessional/)

6. Office of Dietary Supplements. (n.d.). Folate. Retrieved from [NIH](https://ods.od.nih.gov/factsheets/Folate-HealthProfessional/)

7. National Institutes of Health. (n.d.). Vitamin K. Retrieved from [NIH](https://ods.od.nih.gov/factsheets/VitaminK-HealthProfessional/)

8. Mayo Clinic. (n.d.). Biotin deficiency. Retrieved from [Mayo Clinic](https://www.mayoclinic.org/symptoms/biotin-deficiency/basics/definition/sym-20050880)

9. National Institutes of Health. (n.d.). Pantothenic Acid. Retrieved from [NIH](https://ods.od.nih.gov/factsheets/VitaminB5-HealthProfessional/)

10. National Institutes of Health. (n.d.). Choline. Retrieved from [NIH](https://ods.od.nih.gov/factsheets/Choline-HealthProfessional/)

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