When it comes to healthy longevity, one nutrient stands out – vitamin D! This is due to its surprising roles in aging, resilience, and overall wellness. For your health needs, our IV therapy Toronto lounge offers this nutrient in the form of intramuscular vitamin injections. 

Integrative health providers agree that diet and personal nutrient levels have parts in enriching or downgrading your health. “Among many factors, vitamin D plays an important role as a nutrient capable of affecting the aging process at a cellular/molecular level, with a wide range of actions,” confirms an International Journal of Molecular Sciences paper. 

So, why should we care about vitamin D for longevity? The Toronto Functional Medicine Centre sheds light in this new article. 

(Side note: If aging isn’t on your mind, this article will still interest you – it’s never too soon or too late to take preventative health measures! Bookmark this page now for future reading.)  

How Vitamin D Can Help the Aging Process

Vitamin D levels should be paid attention to – after all, the body naturally produces less of the nutrient as we age. According to a Journal of Nutrition, Health, and Aging paper, “Studies have shown that up to 50% of older adults may have insufficient levels of vitamin D, which can have significant implications for their overall health and longevity.” Below, we highlight how the nutrient is beneficial for improving longevity: 

• • It’s been found to positively affect cellular health. The ends of our chromosomes contain caps called telomeres. Shortened telomeres have been associated with age-related concerns, including heart disease and dementia. In a recent study, vitamin D supplements (2000 IU/day) were shown to minimize the shortening of telomeres – scientists imply that this action might delay biological aging by three years. 

• • It may reduce the risks for forming age-related conditions. Regular D supplements can help ensure you don’t form a nutrient deficiency. This specific deficiency has been linked to bone disorders (i.e. osteoporosis), increases in fractures, and the formation of some cancers, heart conditions, chronic kidney disease, and inflammatory bowel disease. 

• • It supports the absorption of calcium. Did you know that you need vitamin D to properly absorb calcium? “In cases of chronic or severe vitamin D deficiency, reduced intestinal absorption of calcium and phosphorus leads to lower blood calcium levels,” confirms StatPearls Publishing. Calcium is imperative for sustaining bone mineralization, especially during postmenopause. When you supplement with vitamin D, you’re potentially improving your calcium uptake, which can help prevent or recover from fractures as you age. 

Vitamin D Tips to Try

Boosting vitamin D can be accomplished! Consider the following tips: 

• • Get tested: Functional integrative clinics, like ours, offer laboratory testing that might not be available at some conventional health practices. Get your vitamin D levels measured and, if there are concerns with nutrient absorption, your gut microbiome bacteria can also be quantified. 

• • Consume foods containing vitamin D: Though food contains lower amounts of vitamin D compared to supplements, they can still help increase levels. Read food labels to see if what you’re eating is fortified; milk, orange juice, and soy milk are a few examples of items that vitamin D is added to. You can also eat oily fish, such as rainbow trout. “A 3-ounce serving of rainbow trout has 16.2 mcg and a similar serving of sockeye salmon has 14.2 mcg,” confirms WebMD. 

• • Take oral supplements: Tablets, capsules, and liquids are available. We recommend taking these supplements with healthy fats (i.e. foods such as avocado or nuts), as vitamin D is a fat-soluble nutrient. 

• • Ask your functional medicine provider about a vitamin D D3 IM shot prescription: Oral vitamin D supplements may not suffice if you struggle with malabsorption. A vitamin D intramuscular (IM) injection is made to bypass the digestive system, delivering the nutrient directly into the bloodstream and guaranteeing a full absorption of the dosage. Injections provide a stable and sustained release of vitamin D in the body over time. Healthcare providers may recommend vitamin injections for patients with low vitamin D levels, where rapid correction is required. It’s also a suitable treatment for patients with swallowing difficulties (dysphagia). 

There are several ways to promote healthy longevity – so, how can we optimize your wellness for the long haul? Discover our complementary therapies, including intravenous therapy and IM vitamin shots – take your wellness to the next level today! For instance, many patients seek IV therapy in Toronto to address absorption issues, such as managing a folate deficiency, which may impact cellular repair.

Gain Access to Our Lab Tests and IV Therapy

In our downtown Toronto practice, therapies are customized with functional medicine principles. Functional medicine is a health care model that emphasizes individuality in patient protocols – this means that modalities are customized for your uniqueness. Treatments are personalized by taking genetic predisposition, current nutrition, lifestyle, and environmental factors into account. 

As a functional integrative practice, we offer several complementary medicine treatments, including herbal/botanical remedies, psychotherapy, Western and naturopathic medicine, holistic nutrition, hormone optimization therapies, and more. These therapies can be modified into one treatment plan, which may be beneficial for managing autoimmune diseases, digestive issues, menopause and andropause, and chronic stress. 

Our clinicians can also prescribe IV vitamin therapy and intramuscular vitamin injections, and these are administered in our IV Lounge. IV drips are freshly blended on a daily basis without added preservatives – we only use natural ingredients! We customize doses of nutrients, including high dose vitamin C infusions, several amino acids, and the popular Myers Cocktail drip treatment. Glutathione, vitamin D, and B12 doses are personalized as IM vitamin shots only. When IV drip therapy and nutrient injections are combined with healthy lifestyle changes and other functional medicine therapies, they can help optimize general needs.

Furthermore, we stand by our patient-centred approach to wellness. We make functional laboratory testing accessible to everyone so that they can be aware of what is happening in their bodies. Patient education is key to sustaining optimal health and functioning – so let’s join forces and explore your health goals today!

Intramuscular vitamin injections can be prescribed by our Toronto IV therapy Lounge – come visit our downtown Toronto location. Simply start here to fill in our contact form to request your initial consultation. 

Disclaimer: The information in this article is designed for educational purposes only and is not intended to be a substitute for informed medical advice or care. This information should not be used to diagnose or treat any health problems or illnesses without consulting a doctor. You should always consult with a health care practitioner before relying on any information in this article or on this website. Never delay or disregard seeking professional medical advice from your doctor or other qualified healthcare provider because of information you have read from the Toronto Functional Medicine Centre website or other affiliate media. 

 

References

“6 Healthy Foods High in Vitamin D.” WebMD, WebMD LLC, 7 Jan. 2025, www.webmd.com/diet/foods-high-in-vitamin-d. Accessed 7 Sept. 2025.

Annweiler, C., Souberbielle, JC. Vitamin D-Sire for Longevity: Can Vitamin D Contribute to Life Expectancy?. J Nutr Health Aging 27, 607–608 (2023). https://doi.org/10.1007/s12603-023-1964-3

Fantini, Cristina, et al. “Vitamin D As a Shield against Aging.” International Journal of Molecular Sciences, vol. 24, no. 5, 2023, p. 4546, https://doi.org/10.3390/ijms24054546. Accessed 6 Sept. 2025.

Freeborn, Jessica. “Vitamin D Supplements May Slow Biological Aging, Preserve Telomere Length.” Medical News Today, updated 1 Sept. 2025, www.medicalnewstoday.com/articles/vitamin-d-supplements-may-slow-biological-aging-preserve-telomere-length. Accessed 8 Sept. 2025.

Giustina A, Bouillon R, Dawson-Hughes B, Ebeling PR, Lazaretti-Castro M, Lips P, Marcocci C, Bilezikian JP. Vitamin D in the older population: a consensus statement. Endocrine. 2023 Jan;79(1):31-44. doi: 10.1007/s12020-022-03208-3. Epub 2022 Oct 26. PMID: 36287374; PMCID: PMC9607753.

Hill TR, Aspray TJ. The role of vitamin D in maintaining bone health in older people. Ther Adv Musculoskelet Dis. 2017 Apr;9(4):89-95. doi: 10.1177/1759720X17692502. Epub 2017 Feb 14. PMID: 28382112; PMCID: PMC5367643.

Kaur J, Khare S, Sizar O, et al. Vitamin D Deficiency. [Updated 2025 Feb 15]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK532266/

Lanske B, Razzaque MS. Vitamin D and aging: old concepts and new insights. J Nutr Biochem. 2007 Dec;18(12):771-7. doi: 10.1016/j.jnutbio.2007.02.002. Epub 2007 May 24. PMID: 17531460; PMCID: PMC2776629.

“Vitamin D Capsules or Tablets.” Cleveland Clinic, Cleveland Clinic Foundation, last reviewed 2 years ago, my.clevelandclinic.org/health/drugs/19456-vitamin-d-capsules-and-tablets. Accessed 7 Sept. 2025.

Zhu H, Manson JE, Cook NR, Bekele BB, Chen L, Kane KJ, Huang Y, Li W, Christen W, Lee IM, Dong Y. Vitamin D3 and marine ω-3 fatty acids supplementation and leukocyte telomere length: 4-year findings from the VITamin D and OmegA-3 TriaL (VITAL) randomized controlled trial. Am J Clin Nutr. 2025 Jul;122(1):39-47. doi: 10.1016/j.ajcnut.2025.05.003. Epub 2025 May 21. PMID: 40409468; PMCID: PMC12308094.