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How to Spot Vitamin Deficiencies and What to Do About Them

Writer's picture: Dean CranneyDean Cranney

Introduction

Feeling constantly tired? Struggling with brittle nails or frequent colds? These could be signs your body is lacking essential vitamins. Vitamin deficiencies are more common than you think, and they can affect people of all ages. The good news? They’re often easy to detect and correct. In this guide, we’ll explore how to spot vitamin deficiencies, what they mean for your health, and the best ways to restore balance.


Common Signs of Vitamin Deficiencies (And What They Mean)


Fatigue and Low Energy


Potential Deficiencies: Vitamin B12, Iron, Vitamin D

If you find yourself constantly drained, despite getting enough sleep, you might be lacking these key nutrients. Vitamin B12 helps produce red blood cells, while iron carries oxygen throughout the body. Low Vitamin D levels have also been linked to chronic fatigue.


What to Do:

  • Eat more iron-rich foods (spinach, lentils, red meat)

  • Incorporate B12 sources (fish, eggs, fortified cereals)

  • Get at least 15-20 minutes of sunlight daily or consider a Vitamin D supplement


A fatigued man sitting at a desk with a coffee cup, struggling to stay awake.
Feeling exhausted all the time? You may need more Vitamin B12 or iron

Brittle Nails and Hair Loss


Potential Deficiencies: Biotin (Vitamin B7), Iron, Zinc

Cracked nails, thinning hair, and excessive shedding may indicate a lack of biotin, iron, or zinc. These nutrients support hair and nail growth and maintain their strength.


What to Do:

  • Increase intake of nuts, eggs, and whole grains for biotin

  • Eat lean meats and legumes for iron

  • Incorporate pumpkin seeds and seafood for zinc


    A close-up of cracked nails and dry hands.
    Weak nails and thinning hair could be signs of a biotin or iron deficiency

Frequent Colds and Slow Wound Healing


Potential Deficiencies: Vitamin C, Zinc, Vitamin A

If you’re catching every bug that comes your way or noticing slow-healing cuts, your immune system may be weakened due to a deficiency.


What to Do:

  • Eat citrus fruits, bell peppers, and strawberries for Vitamin C

  • Include dairy, eggs, and fish liver oils for Vitamin A

  • Get zinc from nuts, shellfish, and whole grains



A person wrapped in a blanket holding a cup of tea while sneezing.
Getting sick often? Your immune system might need a Vitamin C boost

4. Muscle Cramps and Tingling Sensations


Potential Deficiencies: Magnesium, Calcium, Vitamin E

Muscle cramps, tingling in hands or feet, and frequent spasms might indicate a shortage of these essential nutrients.


What to Do:

  • Add almonds, spinach, and avocados for magnesium

  • Drink dairy or fortified plant-based milk for calcium

  • Eat sunflower seeds and spinach for Vitamin E


    A man clutching his calf in discomfort from a leg cramp
    Cramps and tingling? You might be low in magnesium or calcium

How to Prevent Vitamin Deficiencies


  • Eat a Balanced Diet: Focus on whole, nutrient-rich foods.

  • Take Blood Tests: Regular check-ups can help identify deficiencies before they cause symptoms.

  • Consider Supplements: If your diet isn’t meeting your needs, supplements can help fill in the gaps.

  • Stay Hydrated: Proper hydration aids in nutrient absorption.


Conclusion

Your body gives you signals when it lacks essential vitamins—don’t ignore them! By making small dietary adjustments, taking supplements when needed, and getting routine check-ups, you can maintain optimal health. If you suspect a severe deficiency, consult your doctor for professional guidance.

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Dr Cranney Family Medicine

2020 E 29th Avenue, Suite 235, Spokane, WA 99203

(509) 673-7221 / info@drcranney.com

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