Vitamin B12 is the main fuel source for your body. However, some people cannot absorb it well because of their DNA. A FUT2 gene test at dnaPower reveals if you are a “Non-Secretor”, blocking this nutrient. This insight helps you choose the right vitamins for real energy. Finally, stop the cycle of unexplained fatigue.
The FUT2 gene determines whether you are a “Secretor” or a “Non-Secretor.”
This gene controls whether your body puts (secretes) your blood type markers into your body fluids, like saliva and the mucus lining of your gut. This might sound small, but it has a huge impact on:
In simple terms, FUT2 decides how “welcoming” your gut environment is for nutrients and microbes.
dnaPower tests the FUT2 gene to see how your gut is wired.
Neither status is “bad.” However, Non-Secretors often need a specific plan to stay energized and healthy.
The FUT2 gene is often overlooked, but it influences several key systems in your body.
Vitamin B12 is the fuel for your cells. Even if you eat enough B12, being a Non-Secretor means you might not absorb it well. This can lead to:
FUT2 creates sugars in your gut lining that feed good bacteria. If you are a Non-Secretor, you have fewer of these sugars. This can weaken your gut barrier and make you more susceptible to imbalances.
Vitamin B12 is the key ingredient for methylation (your body’s detox and repair process). If FUT2 issues block B12 absorption, your entire methylation cycle can slow down. This is why we include FUT2 in our comprehensive methylation panel, rather than looking at digestion alone.
Your environment interacts with your genes. Certain lifestyle factors make knowing your FUT2 status even more important.
For Non-Secretors, simply “taking more B12” isn’t always the answer.
Your genetics help explain why oral supplements might not raise your levels. You may need a different form of B12 (like drops or sprays) or specific probiotics to support your gut lining. Knowing this prevents frustration and saves you money on supplements that don’t work for you.
Understanding your FUT2 status gives you a clear advantage. Your report will help you personalize:
All results are delivered as part of your total health report, with simple guidance you can use immediately.
Your gut health is the foundation of your energy. If standard advice isn’t working, your FUT2 gene likely holds the answer. Get clear, science-backed insights into your digestion and immunity. One simple test can change how you fuel your body for life.
Yes. If you are a FUT2 “Non-Secretor,” your genetics may block efficient B12 absorption in the gut. This can lead to unexplained fatigue and low energy levels.
Secretors (80% of people) release blood type markers into their gut mucus to support healthy bacteria and B12 absorption. Non-Secretors do not, which often results in a more sensitive digestive system and a higher risk of nutrient deficiencies.
Because Non-Secretors struggle with gut-based absorption, sublingual B12 (drops or sprays) is often most effective. These delivery methods bypass the traditional digestive route.
No. A standard blood test only measures your current B12 levels. To understand the root cause of an absorption issue, a DNA test is required to identify the specific FUT2 genetic variation.
