La Vitamine D et ses bienfaits || The benefits of Vitamin D

Mar 29, 23

7 minutes

By Charles Lacasse

The benefits of Vitamin D


Is vitamin D essential?

The short answer: yes! But still...


WHO needs it?

  • Active people.
  • People who are overweight.
  • Canadians.
  • Everyone, really!


Due to the lack of sun exposure, most of the Quebec population is deficient in vitamin D. In fact, 32% of Canadians are deficient in vitamin D and the figures increase in winter: we are talking about 40% of the population according to Statistics Canada.


Active people have a greater need for this vitamin, which accentuates its deficiency.


When overweight or obese, this deficiency also increases:

  • 35% more likely to be deficient when obese.
  • 24% more likely to be deficient when overweight.


Also, it has been noted that sleep disorders are often associated with a vitamin D deficiency.

Supplementation is therefore essential for everyone.



When we become aware of the benefits that the sunshine vitamin brings to our body, we jump at the opportunity to optimize our health on so many levels! Here are some of its benefits:

  • Increases the efficiency of the immune system
  • Improves the quality of sleep
  • Increases muscle strength
  • Increases free testosterone levels
  • Prevention of degenerative diseases (such as Parkinson's).
  • Increases muscle strength by 1.37% to 18.75%.
  • Improves the efficiency of satellite cells (muscle regeneration), thus extending their life span. 

For active people we recommend a dosage of 25 to 35 times the body weight in pounds. As an example, a person weighing 180 lbs, can consume 4500 IU to 6300 IU.


Our coaches can help you establish a supplementation plan that meets your daily needs. We are offering you a free consultation with one of them today to discuss this further:





Pereira-Santos, M., Costa, P. R., Assis, A. M., Santos, C. A., & Santos, D. B. (2015). Obesity and vitamin D deficiency: a systematic review and meta-analysis. Obesity reviews : an official journal of the International Association for the Study of Obesity, 16(4), 341–349.

Zhou, Z., Zhou, R., Zhang, Z., & Li, K. (2019). The Association Between Vitamin D Status, Vitamin D Supplementation, Sunlight Exposure, and Parkinson's Disease: A Systematic Review and Meta-Analysis. Medical science monitor : international medical journal of experimental and clinical research, 25, 666–674.

Chiang, C. M., Ismaeel, A., Griffis, R. B., & Weems, S. (2017). Effects of Vitamin D Supplementation on Muscle Strength in Athletes: A Systematic Review. Journal of strength and conditioning research, 31(2), 566–574.

Abboud M. (2022). Vitamin D Supplementation and Sleep: A Systematic Review and Meta-Analysis of Intervention Studies. Nutrients, 14(5), 1076.

Mirzaei-Azandaryani, Z., Abdolalipour, S., & Mirghafourvand, M. (2022). The effect of vitamin D on sleep quality: A systematic review and meta-analysis. Nutrition and health, 28(4), 515–526.

Alfaqih, M. S., Tarawan, V. M., Sylviana, N., Goenawan, H., Lesmana, R., & Susianti, S. (2022). Effects of Vitamin D on Satellite Cells: A Systematic Review of In Vivo Studies. Nutrients, 14(21), 4558.

Robles, L. A., Harrison, S., Tan, V. Y., Beynon, R., McAleenan, A., Higgins, J. P., Martin, R. M., & Lewis, S. J. (2022). Does testosterone mediate the relationship between vitamin D and prostate cancer progression? A systematic review and meta-analysis. Cancer causes & control : CCC, 33(8), 1025–1038.

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Alexis Beriault

Trainer and naturopath
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Specialist in fat loss and recognized for my "LEG DAY" programs, I help you reach your full physical potential and adopt the best mindset through a clear and precise structure for your training, your diet and your lifestyle.
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Weight loss
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Kasandra Hamel

Dietary Technician and Certified Trainer
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Fitness specialist and recognized for my BOOTY DAY. I help you create a routine that works for you and your unrestricted lifestyle. Above all, I guide you to love the process and make it an enjoyable long-term routine.
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Francis Menard

Trainer and Naturopath
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Naturopathy practitioner, Francis curiosity and very human spirit pushes him to take an interest not only in your physical health, but also in everything that surrounds it to fully understand your needs as a whole. He describes himself as a "health educator". Coach Francis is an expert in fat loss, nutrition, digestive health and supplementation.
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Charles Lacasse

Kinesiology and physiotherapy technologist
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With his educational approach, Charles helps you better understand the impact of your training, your diet and your lifestyle on your body. An expert in body recomposition and performance, achieving your goals has never been easier.
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