10/12/2025
Did you know high dose vitamin D supplements can throw your minerals out of balance in a big way?
One of my favorite ways to really assess how a person is feeling is by looking at their thyroid ratio on a hair analysis (calcium to potassium levels). If you're taking vitamin D which raises calcium levels and lowers potassium, you're moving these minerals in the opposite direction of what is desirable to support your thyroid's ability to do its job!
A disrupted calcium:potassium ratio can look like:
-fatigue
-brain fog
-low body temperature
-blood sugar issues (hypoglycemia)
-sluggish digestion
-sluggish thyroid
Why does this mineral imbalance happen with high dose vitamin D?
Well, for starters, vitamin D tells your body to absorb more calcium from your food, so the presence of vitamin D in the bloodstream means that the person taking vitamin D supplements is going to absorb more calcium from their food than someone who isn't taking vitamin D supplements.
On some occasions, a tiny bit of supplemental vitamin D might be helpful if one happens to be low in calcium (most people have plenty), but it's still not preferred, and no-one really takes just a little bit of vitamin D for a short while. Most people start taking high dosages and make it a habit. This can quickly create chronically high calcium levels and that leads to calcification of your body (think stiffness among other undesirable things, like back pain, joint issues, osteoporosis).
High calcium is just not good, it SLOWS things down in the body.
The next thing vitamin D does is it lowers potassium levels. This can cause a whole host of symptoms such as:
-Acne
-Weakness, tiredness, or cramping in arm or leg muscles
-Numbness and/or tingling
-Constipation
-Excess water consumption
-Depression
-Nausea or vomiting
-Edema
-Fatigue
-Insomnia
-Nervousness
-Mental impairment
-Abdominal cramping and/or bloating
-Fainting due to low blood pressure
-Heart palpitations (irregular heartbeat)
Some vitamin D is good ☀️, more is not better. Testing before taking high dosages is smart 🧠.
Read more https://butternutrition.com/vitamin-d-supplement-warning/