Signs You Are Low In Vitamin D: What To Look For & How To Support Your Levels
Most People Don't Realise They're Low in Vitamin D
Vitamin D deficiency is far more common than most people realise. Data from the Australian Bureau of Statistics shows that 1 in 4 adults are deficient, with levels dropping even further during winter. Research from Curtin University also highlights that modern lifestyle (spending more time indoors and getting less sun exposure) are contributing to widespread deficiency.
The challenge is that the signs of vitamin D deficiency are often overlooked. They quietly affect your energy, mood and overall wellbeing.
In this article, we will break down the most common signs to look for and what you can do to support your vitamin D levels.
Why Vitamin D Matters More Than You Think
Vitamin D is often associated with bone health but its role in the body goes much deeper. Vitamin D plays as essential role in:
- Supporting calcium absorption
- Promoting bone mineralisation
- Supporting immune system health
- Maintaining muscle function
Its impact goes beyond just long-term health. Low vitamin D levels can influence your energy levels, slow your recovery and reduce your resilience to stress. This means it doesn't just shape your future health, it directly affects how you feel, perform and function every day.
Common Signs of Vitamin D Deficiency
Vitamin D supports multiple systems in the body, deficiency can show up in different ways. Here are some of the most common signs associated with Vitamin D deficiency:
1. Low Energy or Constant Fatigue
Feeling tired despite getting enough sleep? Vitamin D plays a role in supporting general health and wellbeing. Low levels may be associated with feeling:
- Flat
- Unmotivated
- Slower to recover
Many people accept this as normal, when it may be linked to low vitamin D levels.
2. Getting Sick More Often
Vitamin D supports immune system health. If you:
- Pick up colds frequently
- Take longer to recover
- Feel rundown more often
It may indicate your immune system isn't fully being supported, which can be associated with low vitamin D levels particularly during winter months.
3. Muscle Weakness or Poor Recovery
Vitamin D helps maintain muscle function. Low levels may be associated with:
- Reduced strength
- Slower recovery after training
- General muscle fatigue
You are putting in the training but not recovering in the way you would expect. Check your vitamin D levels.
4. Bone or Joint Discomfort
Vitamin D helps support calcium absorption and bone mineralisation. Without sufficient vitamin D levels:
- Calcium may not be effectively utilised
- Bone strength may be impacted over time
This is why vitamin D plays an important role in long-term skeletal health.
5. Low Mood or Lack of Motivation
Vitamin D levels naturally drop during winter, at this time many people experience:
- Low mood
- Reduced motivation
- Less drive to train or stay active
While it is not the only factor, it may play a role in overall wellbeing.
Why Vitamin D Deficiency Is So Common
Even with a balanced whole food diet, many people still fall short. This is because vitamin D isn't easily absorbed through food alone. The main source of vitamin D is sunlight and that comes with limitations.
Common reasons for deficiency include:
- Limited sun exposure
- Indoor lifestyle
- Seasonal changes
- Geographic location
- Use of sunscreen (blocking UVB absorption by 97%)
Data from the Australian Bureau of Statistics found that around 23% of Australian adults have low vitamin D levels, with rates increasing in winter months. Research from Curtin University by Eleanor Dunlop found that 95 per cent of Australians have low vitamin D intakes.
What To Do If You're Low in Vitamin D
1. Get Safe Sun Exposure
Sunlight is the most natural source of vitamin D. When your skin is exposed to sunlight, your body produces vitamin D naturally making it the most efficient way to support vitamin D levels.
However, in reality:
- It is not always consistent
- It varies depending on location and season
- Many people spend most of their time indoors
- Winter months significantly reduce natural production
Even with regular outdoor time, it can still be difficult to maintain adequate levels year-round. That is why relying on sunlight alone isn't always enough especially with modern lifestyles.
2. Support With the Right Supplement
When sunlight exposure is limited, supplementation can help support healthy vitamin D levels but not all vitamin D supplements are created equally.
One of the most overlooked factors is what vitamin D is taken with; because how your body uses it matters just as much as how much you take. Vitamin D needs the right support within the body to work effectively.
Why Vitamin D Should Be Taken With Vitamin K2
Vitamin D helps support calcium absorption in the body but here's what most people don't realise. Absorbing calcium is only part of the process, it also needs to be properly utlised within the body.
This is where vitamin K2 plays an important role. Vitamin K2 helps support how calcium is used in the body particularly in maintaining calcium absorption in bones whilst also supporting blood vessel health and cardiovascular system function.
Together, Vitamin D3 and K2 work in combination to support these processes. This synergy is one of the most important factors when it comes to effective supplementation.
What To Look For in a Vitamin D Supplement
If you are supplementing, it's important to focus on quality, formulation and how well your body can use it not just the dose on the label. Because ultimately, it's not just what you take it's what your body can actually absorb and utilise.
1. Vitamin D3 (Cholecalciferol)
Not all forms of vitamin D are the same. Vitamin D3 (cholecalciferol) is the form naturally produced by the body in response to sunlight and is the preferred form used in supplementation.
It helps support:
- Immune system health
- Muscle function
- General health and wellbeing
Choosing D3 ensures you are using the form your body recognises and uses most effectively.
2. Combined With Vitamin K2
One of the most important and often overlooked factors is what vitamin D is taken with. Vitamin D supports calcium absorption, but vitamin K2 plays a role in how that calcium is utilised in the body.
Together, they support:
- Calcium absorption in bones
- Bone mineralisation
- Cardiovascular system health
- Blood vessel health
This synergistic combination supports both both health and cardiovascular function, rather than focusing on one system in isolation.
3. Quality and Testing Standards
Not all supplements are created equally. Quality matters because it directly impacts consistency, purity and trust.
Look for products that prioritise:
- High-quality ingredient sourcing
- Minimal fillers or unnecessary additives
- Transparent labelling
- Third-party or batch testing
TGA Listed and HASTA™ Certified helps ensure what is on the label reflects what is actually in the product.
4. Bioavailability and Formulation
Beyond ingredients, the formulation matters. The way nutrients are delivered can influence how well they are absorbed and utilised by the body.
Factors include:
- Ingredient form
- Delivery method (capsule vs tablet)
- Combination with supporting nutrients
All these factors play a role in how effective a supplement is in being utilised.
Best Time To Take Vitamin D3 & K2
Vitamin D3 and Vitamin K2 are both fat-soluble vitamins, which means they are best taken with a meal containing healthy fats.
Taking them alongside foods such as:
- Eggs
- Avocado
- Coconut oil
- Nuts
- Fatty fish
These foods help support absorption and ulitisation within the body. For consistency many people prefer taking Vitamin D3 & K2 with breakfast or lunch as part of their daily routine. The most important factor is taking it consistently over time.
A Simple Way to Support Your Vitamin D Levels
Supporting healthy vitamin D levels doesn't need to be complicated. Alongside safe sun exposure and a balanced diet, choosing a high-quality supplement can help support your daily intake (particularly during winter months with limited sun exposure).
That's exactly why we created our Vitamin D3 & K2 formula.
Our formula combines:
- Vitamin D3 (cholecalciferol) from natural algae
- Vitamin K2 (menaquinone-7)
- High-quality ingredients and testing standards: TGA Listed and HASTA™ Certified (Batch tested for 250+ WADA banned substances)
Together, these nutrients synergistically support:
- Immune system health
- Muscle function
- Bone mineralisation
- Calcium absorption
- Cardiovascular system health
- Healthy blood circulation
Supporting vitamin D levels isn't just about taking more vitamin D, it's about choosing a formula designed to support how your body absorbs and utilises it.
Final Thoughts
Low vitamin D levels are more common than many people realise particularly during winter months and in modern lifestyles where time spent indoors continues to increase. The signs can be subtle but they may still impact how you feel day to day, from recovery and muscle function to immune system health and overall wellbeing.
Supporting healthy vitamin D levels isn't just about long-term health, it's about helping your body function at its best every day. By focusing on:
- Safe sun exposure
- Consistent daily habits
- High-quality supplementation
- Right nutrient combinations like vitamin D3 & K2
Taking a more complete approach to supporting your health and wellbeing all year round.
