Vitamin D3 Level

Vitamin D levels that are too high or too low can affect your health:

Adequate

A level of 20 nanograms per milliliter (ng/mL) or higher is generally considered adequate for most people.

Deficient

Levels below 12 ng/mL (30 nmol/L) are too low and might weaken your bones and affect your health.

Too high

Levels above 50 ng/mL (125 nmol/L) are too high and might cause health problems.

Vitamin D is important for bone health and overall health. You can check your vitamin D levels with a blood test.

Vitamin D level

Category

Less than 30 nmol/L

Deficiency

30 to below 50 nmol/L

Inadequate

50 to 124 nmol/L

Adequate

Over 125 nmol/L

Too high

Some factors that can increase your risk of vitamin D deficiency include:

Living in a northern climate

Staying inside most of the time

Wearing sunscreen whenever you go out

Having dark skin

Kidney or liver disease

Having a condition that affects your ability to absorb vitamin D

Taking certain medications