UPDATE: The Medicine Cabinet Refill is shipping at capacity this month. Lock in 20% off your first order plus 3 free gifts.
A Message From Dr. Will Cole: "Your Labs Are Normal" Is Not the Same as "Your Tank Is Full"
If you have ever left a physical with perfect numbers and a nap schedule, this article is for you.
Featured In
Today
There is a particular conversation I have heard hundreds of times in my career. It goes like this.
A woman in her late 60s sits down. She is tired in a way she was not five years ago. Her calves cramp at two in the morning.
Words she has known her whole life have started hiding from her mid-sentence. She has raised this with her doctor, responsibly, more than once. The labs come back.
And she hears the four words that are supposed to be good news and somehow land like a door closing: "Your labs are normal."
She believes her doctor. She should, the labs ARE normal. And so, with nothing left to blame, she blames the calendar. It must just be age.
She adjusts her expectations of herself downward, quietly, the way millions of people do every year.
Normal labs mean no disease was detected. They do not mean your tank is full.
What the Standard Panel Actually Checks
The panel at your annual physical is built to find disease:
blood sugar for diabetes, a metabolic panel for your kidneys and liver, a blood count for anemia and infection, cholesterol for cardiovascular risk. It is good at that job.
| Blood sugar, metabolic panel, blood count, cholesterol | Usually included |
| Vitamin B12 level | Not unless ordered |
| Magnesium level | Not unless ordered |
| CoQ10 level | Essentially never measured |
The three nutrients most involved in steady energy, calm muscles, and clear thinking are, for most people, simply not on the report that declared them normal.
And even when they are ordered, there are two honest problems with the word normal:
The Magnesium Problem
Less than 1% of your body's magnesium is in your blood at all. The NIH states plainly that serum levels correlate poorly with total body stores.
Your serum magnesium can read normal while your reserves run low. [1]
The B12 Problem
Normal ranges for B12 are wide and the cutoffs are debated. A reading can sit inside the range while sitting well below where you feel your best. [2]
Low-normal is normal on paper. It does not always feel normal at 3 p.m.
Now Add the Drain
For adults over 60 on daily medications, this measurement gap collides with a second, well-documented fact:
some of the most prescribed drugs in America gradually deplete these exact nutrients.
- Heartburn pills: Linked to malabsorption of vitamin B12 and magnesium, connected to muscle weakness, poor balance, and falls, per the Cleveland Clinic. [3]
- Metformin: One in five long-term users had low or borderline-low B12 in the Diabetes Prevention Program follow-up. [4]
- Statins: Work by blocking the same pathway your body uses to make CoQ10. [5]
- Water pills: Flush magnesium in the same water they were prescribed to remove. [1]
A person can be genuinely healthy by every measured standard, and genuinely running on a low tank, at the same time. Both things are true.
That is the whole mystery of "normal labs, tired anyway," and it never required the calendar to explain it.
What I Tell My Own Patients
Take the word normal as the beginning of a conversation, not the end of one.
The next sentence to say in the exam room: "Could we look at my B12 specifically? I'd also like to talk about magnesium, given my medications."
Compare backward, not just against the range. The most useful question is not "am I inside the normal range?" but "how do I feel against my own baseline from a year ago?"
Mind the forms. Most drugstore B12 must be converted before your body can use it and that conversion slows with age [2], and most drugstore magnesium is the oxide form, poorly absorbed.
Methylated B12 and peptide-bound magnesium exist precisely because the standard forms fail the people who need them most.
The Simplest Next Step
Below is the routine built for exactly this gap: methylated B12, peptide-bound magnesium, and support built for the medications that quietly drain them.
See the Routine Built for This GapYour labs can be normal and your tank can be low. You deserve to know which conversation you are actually in.
The Medicine Cabinet Refill
Balance your body's natural rhythms with the Hormone Health Bundle, a synergistic duo designed to calm stress, restore energy, and support optimal hormone function. Doctor-formulated to target the root drivers of imbalance, this stack helps you feel more resilient, focused, and in control every day.
- Stress & Sleep Support
- Mitochondrial Energy
- Hormone & Mineral Balance
- Doctor-Formulated Duo
FREE Shipping, always · 90-Night Guarantee · Third-party tested
About the Author
Dr. Will Cole, MD
Functional Medicine Practitioner
Dr. Will Cole is a leading functional medicine practitioner who works to find the root cause of fatigue, inflammation, and hormone imbalance. After reviewing thousands of genetic profiles in his clinic, he formulated MitoMultiply for Longevity Rx to give the body the methylated nutrients it can actually use.
References
- [1] NIH Office of Dietary Supplements. Magnesium Fact Sheet for Health Professionals. ods.od.nih.gov.
- [2] NIH Office of Dietary Supplements. Vitamin B12 Fact Sheet for Health Professionals. ods.od.nih.gov.
- [3] Cleveland Clinic. Sarcopenia (Age-Related Muscle Loss).
- [4] Aroda VR, et al. Long-term Metformin Use and Vitamin B12 Deficiency in the DPPOS. J Clin Endocrinol Metab. 2016;101(4):1754-1761.
- [5] Qu H, et al. Effects of Coenzyme Q10 on Statin-Induced Myopathy. J Am Heart Assoc. 2018;7(19):e009835.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Never stop or change a prescription medication without consulting your healthcare provider.