As we age, our bodies naturally become less efficient at absorbing nutrients. Combined with modern diets, stress, and lifestyle factors, many adults over 40 are unknowingly deficient in key vitamins and minerals.

These deficiencies can impact energy levels, immunity, brain function, and long-term health.

Here are seven supplements that many people over 40 may not be getting enough of.

 

1. Vitamin D

Vitamin D is one of the most common nutrient deficiencies, particularly in countries with limited sunlight like the UK.

It plays a crucial role in:

• Bone strength

• Immune function

• Muscle health

• Mood regulation

Low vitamin D levels have been linked with fatigue, frequent illness, and reduced bone density.

Because vitamin D is primarily produced through sunlight exposure, many adults—especially those who work indoors—struggle to maintain optimal levels.

Supplementing with vitamin D can help support immune health and maintain strong bones as you age.

Proactive Healthcare recommends - Nanoemulsified D3K2 from Quicksilver Scientific or Seeking Health D3 + K2 Capsules  

2. Magnesium

Magnesium is involved in more than 300 biochemical reactions in the body, yet many people fail to meet their daily requirements.

This mineral helps regulate:

• Muscle and nerve function

• Sleep quality

• Stress response

• Blood sugar levels

As people get older, magnesium levels often decline due to poor diet, medication use, and reduced absorption.

Common signs of low magnesium include muscle cramps, fatigue, sleep problems, and irritability.

Supplementing magnesium can help support relaxation, better sleep, and overall metabolic health.

We recommend - Magnesium Glycinate Capsules from Metagenics or Magnesium Breakthrough from Bioptimizers 

3. Omega-3 Fatty Acids

Omega-3 fatty acids are essential fats that support heart, brain, and joint health.

Unfortunately, many modern diets contain far more inflammatory omega-6 fats than omega-3s.

Omega-3 benefits include:

• Supporting cardiovascular health

• Helping maintain cognitive function

• Reducing inflammation

• Supporting joint mobility

As we age, maintaining adequate omega-3 intake becomes increasingly important for protecting long-term health.

High-quality fish oil or algae-based supplements can help ensure sufficient intake.

Proactive Healthcare recommends - Life & Soul Pure Omega (clinical Strength) fish oil capsules or Optiyou® Algae Omega-3 DHA+EPA

4. Vitamin B12

Vitamin B12 plays a vital role in energy production, red blood cell formation, and neurological health.

After the age of 40, the body’s ability to absorb vitamin B12 often decreases due to reduced stomach acid production.

Low B12 levels may cause symptoms such as:

• Fatigue

• Brain fog

• Weakness

• Tingling in hands or feet

Vegetarians and vegans are particularly at risk of B12 deficiency because it is primarily found in animal products.

Supplementing with B12 can help maintain healthy energy levels and support nervous system function.

Proactive Healthcare Recommends - Vitamin B12 Complex from New Roots Herbal or Methyl B12 5000 by Seeking Health

5. Zinc

Zinc is an essential mineral involved in immune function, hormone balance, and wound healing.

As we age, zinc absorption can decline, and dietary intake is often insufficient.

Zinc supports:

• Immune resilience

• Skin health

• Hormonal balance

• Cognitive function

Low zinc levels may contribute to weakened immunity and slower recovery from illness.

Maintaining adequate zinc intake can help support the body’s natural defence systems.

Proactive Healthcare Recommends - Zinc Supreme from Designs For Health or Zinc Caps 15mg from Life Extension 

6. Collagen

Collagen is the most abundant protein in the body and provides structural support to skin, joints, and connective tissue.

Unfortunately, natural collagen production begins to decline as early as our mid-twenties and continues to decrease with age.

This decline can lead to:

• Joint stiffness

• Reduced skin elasticity

• Weaker hair and nails

Collagen supplements can help support joint health, skin structure, and overall connective tissue strength.

Proactive Healthcare Recommends - Liquid Health Marine Collagen or Collagen MultiMax 5 from New Roots Herbal

7. Creatine

Creatine is often associated with sports nutrition, but research increasingly shows that it may also support healthy ageing.

Creatine helps the body produce energy at the cellular level and supports muscle and brain function.

Benefits may include:

• Maintaining muscle mass as we age

• Supporting cognitive performance

• Improving physical energy and strength

Because muscle mass naturally declines with age, creatine supplementation can be particularly beneficial for adults over 40 who want to maintain strength and vitality.

Proactive Healthcare recommends - Creatine + Peptide from Applied Nutrition or Optimal Electrolyte from Seeking Health  

Supporting Your Health After 40

While a balanced diet remains the foundation of good health, modern lifestyles make it difficult to consistently obtain all the nutrients the body needs.

High-quality supplements can help bridge these nutritional gaps and support long-term health, energy, and resilience as we age.

Before starting any supplement routine, it is always advisable to consult a healthcare professional, particularly if you have existing health conditions or take medications.