Blog · Technology · 5 September 2026 · 4 min read
Why hair? What the root bulb says about your body
The hair bulb is a living archive of the last few months. How S-Drive reads it and why no blood is needed.
"From hair?" is the first question everyone asks. The short answer: because the hair bulb is one of the most active tissues in the body and keeps a trace of what has happened in the last few months.
The bulb, not the strand
The hair strand we see is dead material. The bulb, at the root, is alive: it is fed by the blood, divides cells constantly and reacts to food, stress and environment. That is why we take strands with the bulb, and why colouring or treatments of the strand don't affect anything.
Four strands are enough. They are taken from the back of the head, where bulbs are most active, and it takes less than a minute.
Why not blood
Blood tests are essential and the report does not replace them. But blood shows a snapshot of the moment: what you ate yesterday, how much water you drank, how much you slept. Many deficiencies don't show because the body keeps blood values stable by drawing on reserves.
The hair bulb reflects a longer period and a different level: the epigenetic information, that is how the body is reacting to conditions. The two views together give a more complete picture.
Blood says where you are today. Hair says where you are coming from.
How S-Drive reads it
Cell Wellbeing's S-Drive device reads the sample and sends the encrypted data to the processing centre in Hamburg. In about 15 minutes the report comes back:
- over 800 nutritional and environmental markers
- grouped into categories with clear priorities
- with no personal data sent abroad
- with a 90-day nutrition plan as a starting point
What it is not
It is not a genetic test, it is not a medical diagnosis and it does not replace your doctor. It is a tool to optimise nutrition and lifestyle, certified and repeatable, that shows you where to start.
If you still have questions about the sample, the FAQ page has the most common answers, or write to us directly.
Dorina Mema · Epigenetics
This blog is for information only and does not replace a visit to your doctor. The epigenetic report is not a medical diagnosis.
