I never imagined that a vitamin deficiency would have anything to do with my hair.
When I first noticed more strands in my hairbrush, I brushed it off. I told myself it was probably stress. Work had been hectic, I wasn’t sleeping enough, and life just felt… busy. Hair fall happens, right?
But after a few weeks, it became harder to ignore.
Every wash day felt like a small shock. My drain collected more hair than usual, and my ponytail didn’t feel as full as it once did. I caught myself checking my scalp in different lighting, wondering if I was imagining things. Like most people, I went down the internet rabbit hole, convincing myself it had to be hard water, genetics, or maybe the shampoo I’d recently switched to.
The funny thing is, I never once thought about what was happening inside my body.
Around the same time, I was constantly exhausted. Not the kind of tired that disappears after a lazy Sunday, but the kind that sticks with you from morning until bedtime. I also started getting an odd tingling sensation in my hands every now and then. I kept telling myself I just needed more sleep or another cup of coffee.
Eventually, I decided to stop guessing and booked a basic blood test.
The results surprised me.
My Vitamin B12 levels were much lower than normal.
I remember staring at the report, wondering how something I’d barely thought about could possibly explain everything I had been experiencing. My doctor explained that Vitamin B12 helps the body make healthy red blood cells, which carry oxygen and nutrients throughout the body—including to hair follicles. If those levels are low, the body naturally focuses on keeping essential organs functioning first, and hair growth can become less of a priority.
For the first time in weeks, everything started making sense.
The hair shedding. The constant fatigue. Even the tingling.
My treatment wasn’t complicated, but it wasn’t instant either. I started taking B12 supplements as advised and made a few changes to my diet. My doctor also explained that some people need injections instead of tablets because their bodies struggle to absorb the vitamin properly, so it’s not really something to self-diagnose.
What surprised me even more was learning how common Vitamin B12 deficiency can be. People who follow vegetarian or vegan diets, older adults, and those with certain digestive conditions may all be more likely to have lower levels without even realising it.
As I looked into it further, I came across several articles discussing the connection between Vitamin B12 for hair and overall hair health. Reading other people’s experiences made me feel less alone. It reminded me that hair loss isn’t always about finding the perfect shampoo or expensive serum. Sometimes the real answer is hidden somewhere you wouldn’t think to look.
I’m not going to say my hair magically became thick again overnight because it didn’t. Hair takes time, and recovery is rarely instant. But finding the actual reason behind my shedding gave me something I hadn’t had in months: clarity.
Looking back, I wish I’d spent less time buying products that promised miracles and more time trying to understand what my body was trying to tell me.
If you’re going through unexplained hair shedding, I’m not saying Vitamin B12 is definitely the reason. Everyone’s situation is different. But my experience taught me that sometimes the answer isn’t on your bathroom shelf—it could be in a simple blood test.
For me, discovering a Vitamin B12 deficiency changed the entire conversation around my hair. It wasn’t the answer I expected, but it was the one I needed.
Photo by Kasia Serbin on Unsplash
