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The role of vitamins and supplements in senior wellness

Posted on July 22nd, 2025

As we age, maintaining good health requires a balanced approach that includes nutritious food, physical activity, social connection, and rest. For many older adults, vitamins and supplements become part of that equation — but knowing what’s beneficial and what’s unnecessary can sometimes feel confusing.

In this blog, we explore the role that vitamins and supplements can play in senior wellness. We’ll cover the essentials, discuss considerations, and share tips for making informed choices — all without advocating for specific products or brands.

In this blog:




Why nutrition matters as we age

Healthy eating provides the essential nutrients our bodies need to function well — supporting everything from energy levels and bone health to cognitive function and immunity. As we age, our bodies may process nutrients differently, or we may face challenges that affect our diet, such as changes in appetite, medication interactions, or difficulty preparing meals.

Incorporating nutrient-dense foods, such as vegetables, fruits, whole grains, lean proteins, and healthy fats, is key. In some cases, however, supplements may help fill nutritional gaps that diet alone might not cover.


How nutritional needs change in older adults


Ageing brings changes to metabolism, digestion, and overall nutritional needs. Some common factors that affect nutrition in older adults include:

  • Reduced calorie needs: Older adults often require fewer calories but still need the same (or higher) levels of certain nutrients.

  • Digestive changes: The body may produce less stomach acid, which can affect the absorption of nutrients like vitamin B12 and iron.

  • Medications: Some prescriptions can interfere with the absorption of vitamins and minerals.

  • Appetite changes: Factors like taste changes, dental issues, or health conditions can impact how much or what types of food seniors eat.

These factors may lead to deficiencies in certain vitamins and minerals, making it important to pay attention to dietary intake. For a more in-depth look at how nutritional needs evolve with age, Alberta Health Services offers a helpful guide on senior health and nutrition.


Common vitamins and minerals for seniors


Here are some of the most commonly recommended vitamins and minerals for older adults, based on general health needs:

  1. Vitamin D - Vitamin D supports bone health by helping the body absorb calcium. It also plays a role in immune function. Older adults, especially those with limited sun exposure, may benefit from vitamin D through diet, fortified foods, or supplements.

  2. Calcium - Essential for maintaining bone strength and reducing the risk of osteoporosis. Dairy products, leafy greens, and fortified foods are good sources; however, supplements may be advised when dietary intake is low.

  3. Vitamin B12- Important for nerve function and the production of red blood cells. As we age, absorption of B12 from food can decrease, particularly for those on certain medications or with digestive conditions.

  4. Fibre - While not a vitamin, fibre is crucial for digestion and heart health. It can be increased through whole grains, fruits, vegetables, and fibre supplements if needed.

  5. Omega-3 Fatty Acids - Found in fish like salmon and mackerel, omega-3 fatty acids support heart and brain health. Supplements, such as fish oil, may be considered if dietary intake is insufficient.

  6. Iron - Iron supports oxygen transport in the blood. While not all seniors require extra iron, those with specific iron deficiencies may need supplementation under a doctor's advice.

  7. Magnesium - Magnesium contributes to muscle and nerve function, regulates blood sugar levels, and maintains bone health. It can be found in nuts, seeds, and whole grains.

  8. Potassium - Helps regulate blood pressure and support muscle function. Bananas, potatoes, and beans are rich in potassium, though supplements may sometimes be suggested.


When supplements might be helpful


While the ideal way to meet nutritional needs is through a varied diet, supplements can play a role when:

  • A healthcare professional diagnoses a deficiency.

  • Dietary restrictions or preferences limit certain food groups.

  • Certain health conditions affect nutrient absorption.

  • Medications interfere with nutrient levels.

  • A physician identifies risk factors for conditions like osteoporosis or heart disease.

For a helpful breakdown of which vitamins are most beneficial for older adults and when supplements might be needed, this article from Best Health Magazine offers clear, age-specific insights tailored to seniors' wellness. It’s important to remember that supplements are not a cure-all. They can support, but not replace, a balanced diet and healthy lifestyle.


Potential risks and considerations with supplements

Not all supplements are necessary, and taking them without guidance can have unintended effects. Here are some considerations:

  • Interactions with medications: Some vitamins and minerals can interact with prescription medications, affecting their effectiveness or causing side effects.

  • Over-supplementation: More isn’t always better. For example, too much vitamin A or iron can be harmful, particularly for older adults.

  • Quality and regulation: Not all supplements are created equal. In Canada, supplements are regulated; however, it’s still important to choose reputable brands and consult with professionals.

  • False health claims: Be wary of products that promise quick fixes or broad health cures.

Approaching supplements thoughtfully can help avoid unnecessary risks while ensuring health benefits. For more insights on which vitamins and minerals are most important for older adults—and how to choose supplements safely—check out this guide from the Government of British Columbia.


How to choose supplements safely

If you and your healthcare provider decide that a supplement is right for you, here are some tips to ensure you choose wisely:

  • Look for third-party testing or certification to ensure quality and purity.

  • Choose supplements appropriate for your age and health needs.

  • Follow dosage instructions carefully, and don’t exceed recommended amounts.

  • Purchase from reputable pharmacies or trusted health stores rather than unverified online sources.

When considering supplements, it’s important to choose products that are safe, effective, and appropriate for your needs. This guide from HealthLink BC offers helpful tips on what to look for, including age-specific formulations, proper dosages, and how to verify product safety through NPN or DIN numbers. Additionally, Canada’s Natural Health Products regulations provide a level of oversight. Products with a Natural Product Number (NPN) have been reviewed for safety and efficacy.


The importance of speaking with healthcare providers


Before adding any vitamins or supplements to your routine, it’s essential to consult with a healthcare provider, such as your family doctor, a pharmacist, or a registered dietitian.

A healthcare professional can:

  • Identify any specific nutrient deficiencies.

  • Recommend appropriate dosages tailored to your needs.

  • Check for potential interactions with medications.

  • Provide advice on dietary improvements that may reduce the need for supplements.

At Optima Living communities, our wellness teams encourage residents to discuss any health concerns — including nutrition and supplements — with their medical support network.


Final reflections on balanced wellness

Vitamins and supplements can play a valuable role in senior wellness, especially when used under the guidance of a medical professional. But they’re just one part of a broader picture of health.

Prioritizing:

  • A balanced and varied diet

  • Regular physical activity

  • Adequate hydration

  • Restful sleep

  • Social connection

…all contribute to feeling your best at every age.

If you’re curious about your nutritional needs, consider speaking with your doctor or a registered dietitian. Together, you can develop a plan that supports your health, well-being, and the joyful life you deserve.

At Optima Living, we believe that food is a form of care. That’s why our teams go the extra mile to ensure your food is both nutritious and enjoyable. Let us welcome you home — to a place where meals are shared, friendships are nurtured, and every bite brings comfort.

Continue your journey here

Looking to take the next step in your senior living journey or simply stay connected? Here are a few helpful links:


About Optima Living 

Optima Living is a trusted community of senior living residences across Western Canada, with over 15 years of commitment to creating home-style living rooted in respect, dignity, and purpose. With a range of independent, assisted, memory living, and long-term care options and a heartfelt commitment to our North Star, “Let us welcome you home,” Optima Living empowers seniors to thrive in a caring environment where personal choice, meaningful connections, and well-being come first.


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