Guess Who's Not Sick Right Now?
- drbrandanlee
- Dec 31, 2025
- 2 min read
People with great Vitamin D levels, that's who.
Have you been sick recently? Do you know someone who's been sick this month?
"All of my daughters' friends are sick right now, it's crazy!" This is what one mother said to me about her middle school-aged daughter over the weekend.
If it seems like everyone around you is sick, it's because a lot of people are sick right now! And it's not just kids, chances are you know a mix of children and adults who are not feeling well. Headlines claim we are in the midst of a bad flu season, and this time of year leaves many immune systems compromised.
There is one particular demographic of people who are not sick. It's people who have optimal Vitamin D levels. The globally accepted range for blood Vitamin D levels considered optimal for immune and overall health is 40 to 60 ng/mL.
The more I research Vitamin D's role in immune function, the more convinced I am that this is the most crucial piece of the puzzle determining whether people get sick during cold and flu season.
Major Disconnect:
Most people think they've got Vitamin D covered. This is the central dilemma. Between getting a little sunshine and taking a multi, many people mistakenly assume that their Vitamin D levels are just fine.
The Reality: You have an 89% chance of not having optimal Vitamin D levels.
Surveys and studies indicate that 9 out of 10 people have suboptimal vitamin D levels. The average North American has a Vitamin D level of 26 ng/mL. The ideal range is 40 to 60 ng/mL, so this means the average North American has about half the Vitamin D level they need to experience the immune benefits Vitamin D offers.
If your Vitamin D level is below 40 ng/ml, or you don't even know your Vitamin D level, you're doing Vitamin D wrong!
Critical Mistakes:
You've never had your Vitamin D level checked.
You haven't had your Vitamin D checked in over a year.
You can't tell me your Vitamin D level off the top of your head.
Take the first step towards having a great Vitamin D level.
It's not that hard to optimize your Vitamin D, and your immune system craves it! Finding out your current Vitamin D level is one of the most eye-opening and helpful steps you can take.
We offer several helpful resources.
A simple and inexpensive action step is to check your Vitamin D status with our Vitamin D Home Test.
We also offer a Vitamin D Challenge Home Study that guides you, step by step, through the process of raising your Vitamin D level from where it is to where it should be.
Dr. Brandan Lee wrote this article. No AI was used for this article.
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