Prefer to listen? Click on the audio player below.
Have you ever taken the same supplements as a friend, only to notice they feel great and you feel... nothing?
You're not imagining it, and you're not doing anything wrong.
The truth is, the same vitamin, at the same amount, can work beautifully for one person and do almost nothing for another. The difference often comes down to your genes.
Why Multivitamins Are Built for a Person Who Doesn't Exist
Most multivitamins are formulated for an “average” person. The problem is that person doesn't actually exist.
Everyone's body processes nutrients a little differently, and those differences are often written into your DNA.
On top of that, many over-the-counter supplements use cheaper, harder-to-absorb forms of key nutrients. A common example is B12, where many products use a form your body has to convert before it can use it, while other forms are ready for your body to use more directly.
If your genes make that conversion process slow or difficult, you may be taking a supplement every day and getting very little benefit from it.
Can the Wrong Supplement Actually Cause Problems?
It can.
This isn't just about wasted money. Sometimes the wrong supplement, or the wrong amount, can work against you.
One well-known research trial found that giving the same nutrient, at the same amount, to a group of people at high risk for lung cancer actually increased their risk instead of lowering it. The trial had to be stopped early because the results were so significant.
That same nutrient has been shown to be protective in other people.
Same nutrient, same amount, completely different outcome, depending on the person.
How Genetic Variants Affect the Vitamins You're Already Taking
Here are a few examples of how this plays out in real life:
Vitamin A
Many multivitamins use a form called beta carotene, which your body has to convert into usable vitamin A.
Research suggests that a significant number of people, especially women, have a genetic variant that makes this conversion inefficient. That means the vitamin A on the label may not be translating into vitamin A your body can actually use.
Folate
You may have heard of the MTHFR gene and its role in folate processing. But there's another gene, DHFR, that also affects how well your body converts folic acid into its active, usable form.
Depending on your genetic variants, this conversion can vary significantly from person to person.
Vitamin D
Beyond the vitamin D receptor, other genes play a role in how well your body absorbs and activates vitamin D in the first place.
If those genes aren't working efficiently for you, taking more vitamin D isn't necessarily the answer.
When Combining Supplements Gets Complicated
It's not just about individual nutrients, either. Sometimes combinations matter just as much.
For example, some people take methylated B vitamins because they've learned they have an MTHFR variant. But if that person also has a variant affecting how quickly they clear certain mood-related chemicals, adding methylated B vitamins can sometimes lead to increased anxiety, irritability, or trouble sleeping rather than the boost they were expecting.
This is why looking at your genetic variants together, rather than one at a time, matters so much.
So Where Do You Start?
Understanding your unique genetic blueprint is the first step toward supplementing with precision instead of guesswork.
Genetic testing gives you a permanent map of how your body processes key nutrients because your genes don't change over time. Bloodwork adds another layer by showing where things stand for you right now, since nutrient levels can shift over time.
Together, they can help you and your practitioner build a more personalized approach instead of relying on generic advice that may not be doing much for you at all.
Ready to Understand What Your Genes Are Telling You?
Your genetic blueprint holds valuable information about how your body processes the nutrients you're already taking.
Learn more about the MyHappyGenes® DNA Kit and Reports
