From the Lab

Vitamin D is essential | The guide

May 13, 2026 · By Xavier Savage · Resources

Why Vitamin D is essential

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Vitamin D is essential to many different functions in our body.

Bodily functions such as:

  1. insulin sensitivity
  2. mood
  3. and mineral absorption.

All of those functions and more utilize vitamin D.

Almost more than 50% of the world has a vitamin d Deficient.

While you can get vitamin D from the sun. It’s harder in cold climates like the midwest.

Therefore supplementing with vitamin D is a much easier process. Plus the pills ar super tiny no matter the brand.

What happens if you are deficient in Vitamin d

Poor or inhibited muscle recovery. If you work a laborious job, or train a lot, you’re more susceptible to  injury, sprains and tears.

Supplementing Vitamin D is not going to make you superhuman. It will help maximize your recovery.

Depression can also occur in someone deficient in Vitamin D.

This can include a form of depression called seasonal affective disorder.

The symptoms can  include:

  1. insomnia
  2. weight gain
  3. fatigue

This is commonly experienced in the winter time.

The summer time is the most optimum time for obtaining vitamin d from the sun. Supplementation is still key.

How to take it

Its a fat soluble vitamin and is best taken with a fatty food like avocado for example.

Vitamin D summary

You can’t get vitamin d from diet alone. In fact  due to the way most foods are grown or processed I believe a multivitamin can help alleviate most of the shortages.

For those who are of a lighter skin complexion wearing sun block won’t hinder your ability to get vitamin d from the sun.

Additional reads

How to figure out your protein needs

Healthier bbq and grilling

Important foods for improved gut health

Lemon water does it really stimulate weight loss

What are the worst foods to eat before a workout

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Xavier Savage

Founder, XPERFORMANCELAB

I do not shape muscle. I shape structure. The person you become is the person you construct.

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