Feeling Tired & Run Down? You Might Be Low on Vitamin D
Vitamin D is one of the most essential nutrients for immune function, energy, and inflammation control, yet deficiency is extremely common. Many people struggle with fatigue, poor immunity, and even chronic pain, not realizing that low vitamin D may be the culprit.
The problem? Simply taking a vitamin D supplement isn’t enough—your body needs proper liver function, vitamin K, and sun exposure to absorb and use vitamin D effectively.
Let’s break down why so many people are deficient, how to fix it, and why liver health plays a major role in vitamin D levels.
Why Are So Many People Vitamin D Deficient?
If you’re low in vitamin D, you’re not alone. Studies show that over 40% of U.S. adults have low vitamin D levels, and the numbers are even higher in people with chronic inflammation, fatigue, and immune challenges.
Main Causes of Vitamin D Deficiency:
- Lack of sun exposure – Many people spend too much time indoors or live in climates with little sunlight.
- Liver congestion & poor detox function – The liver must convert vitamin D into its active form—if it’s sluggish, vitamin D levels stay low.
- Not enough vitamin K – Without vitamin K, vitamin D cannot be properly absorbed or used by the body.
- Winter & spring blood draws – Many doctors test vitamin D levels during these seasons, when people have had less sun exposure for months. If you would like to monitor your levels from home, try using a an at-home test.
- Poor gut health – Fat malabsorption or gut inflammation can limit vitamin D absorption.
If any of these apply to you, fixing the root causes is key to improving vitamin D levels.
The Liver-Vitamin D Connection: Why Detox is Crucial
Your liver is responsible for converting vitamin D into its active form so the body can use it. If the liver is congested with toxins, sluggish, or inflamed, this conversion doesn’t happen efficiently, leading to low vitamin D levels even if you supplement.
Signs Your Liver May Be Slowing Down Vitamin D Conversion:
- Fatigue & sluggish metabolism
- Poor digestion & bloating
- Hormonal imbalances
- Skin issues (acne, rashes, eczema)
- Difficulty losing weight
- Chronic inflammation & body aches
Solution:
- Support liver function with bitter greens, lemon water, and detox herbs.
- Take LivComplete to support detox pathways & vitamin D activation.
Why Vitamin K Is Essential for Vitamin D Absorption
Taking vitamin D without vitamin K can lead to poor absorption and improper calcium distribution. Vitamin K helps direct calcium to the bones instead of letting it build up in the arteries or joints.
How Vitamin K Supports Vitamin D Function:
- Helps absorb vitamin D properly
- Prevents calcium buildup in arteries (calcification)
- Supports bone & heart health
Best Food Sources of Vitamin K:
- Grass-fed butter & ghee
- Pastured egg yolks
- Leafy greens (kale, spinach, collard greens)
- Fermented foods (natto, sauerkraut, kimchi)
If supplementing vitamin D, always pair it with vitamin K2 for proper absorption and function.
What About Seasonal Blood Tests? Why Vitamin D Is Lowest in Winter & Spring
Many doctors test vitamin D levels in late winter or early spring, when people have had less sun exposure for months. This often makes deficiency appear worse than it is, but it also highlights how important sun exposure is for maintaining vitamin D year-round.
Why Vitamin D Drops in Winter & Spring:
- Less sun exposure → Body produces less vitamin D.
- More time indoors → Lack of natural UVB rays.
- Winter diet changes → Less fresh, vitamin D-rich foods.
Instead of relying only on supplements, consider supporting vitamin D naturally with light therapy and food.
Best Food Sources
While sunlight is the best source of vitamin D, certain foods help boost levels naturally.
Top Vitamin D-Rich Foods:
- Wild-caught salmon & sardines – Best animal-based sources of vitamin D3.
- Egg yolks – Contain bioavailable vitamin D + K2.
- Grass-fed dairy (butter, ghee, raw milk) – Provides both vitamin D & K.
- Mushrooms (UV-exposed varieties) – Vegan-friendly source of vitamin D2.
Eating whole, nutrient-dense foods ensures you’re getting both vitamin D and its essential cofactors.
Can Light Therapy Help with Vitamin D Levels?
If you live in an area with limited sunlight or struggle to get outside, a light therapy box can help compensate for vitamin D loss.
How Light Therapy Works for Vitamin D:
- Mimics natural sunlight → Helps trigger vitamin D production in the body.
- Supports mood & energy → Beneficial for Seasonal Affective Disorder (SAD).
- Improves sleep & circadian rhythm → Helps regulate melatonin & cortisol balance.
For those with long winters, indoor jobs, or low sun exposure, using a high-quality light therapy box for 20-30 minutes daily can help reduce vitamin D deficiency symptoms.
The Best Strategy for Optimizing Vitamin D & Immune Health
Instead of just taking vitamin D supplements, the best way to improve levels naturally is by:
- Supporting the liver to properly activate vitamin D
- Pairing vitamin D with vitamin K for better absorption
- Eating vitamin D-rich foods daily
- Using light therapy if sun exposure is low
Need a deeper vitamin D & immune health protocol?
✔ LivComplete – Supports liver detox & vitamin D activation.
✔ D3/K2 Complete – Ensures proper vitamin D absorption & calcium distribution.
✔ Light Therapy Box – Helps boost vitamin D in winter & spring months.
Final Thoughts
While sun exposure is the best way to get vitamin D, liver health, vitamin K, and proper absorption are just as important.
By focusing on whole-food sources, supporting detox pathways, and using light therapy as needed, you can optimize your vitamin D levels naturally—without relying on endless supplements.
Want to start supporting your vitamin D levels today? Check out our top products for immune health & detox support!