Vitamin B12 is an essential nutrient that plays a key role in keeping your nerves, brain, and blood cells healthy. It helps your body produce DNA and supports energy production. However, many people don’t realize they are low in this vitamin until symptoms become more serious. Vitamin B12 deficiency can develop slowly, and the warning signs are often subtle at first.

Here are nine hidden signs that your body may need more vitamin B12.

1. Persistent Fatigue

Feeling tired all the time is one of the most common signs of vitamin B12 deficiency. This happens because your body needs B12 to produce healthy red blood cells that carry oxygen throughout the body. Without enough oxygen circulating, you may feel weak, drained, or unusually exhausted even after a full night’s sleep.

2. Tingling or Numbness in Hands and Feet

Vitamin B12 is vital for maintaining healthy nerves. When levels are too low, it can damage the protective coating around nerves. This may cause a “pins and needles” sensation or numbness in your hands, legs, or feet. Many people mistake this for poor circulation, but it can actually be linked to low B12.