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Vitamin B12 is an essential nutrient that helps keep your nerves, brain, and blood cells healthy. It also plays an important role in DNA production and normal red blood cell formation. When your body doesn't get or absorb enough vitamin B12, a deficiency can develop gradually, sometimes causing symptoms that are easy to overlook at first.
Because the early warning signs can resemble everyday problems such as stress, poor sleep, or fatigue, some people may not realize that a vitamin deficiency could be contributing to how they feel.
Recognizing possible symptoms is important, especially because untreated vitamin B12 deficiency can lead to complications, including nerve damage. However, these symptoms can have many different causes, so they should not automatically be attributed to low B12.
Here are nine potential signs to know about and when it may be worth speaking with a healthcare professional.
1. Persistent Fatigue
Feeling unusually tired is one of the possible signs of vitamin B12 deficiency. Your body needs B12 to produce healthy red blood cells, which carry oxygen throughout the body. When a deficiency leads to anemia, you may feel weak, exhausted, or less energetic than usual.
You might notice that everyday activities feel more difficult, even after a full night's sleep. Some people also experience reduced stamina or a general sense of weakness.
Fatigue is extremely common and can result from many causes, including sleep problems, stress, iron deficiency, thyroid disorders, and other medical conditions. If tiredness persists or interferes with daily life, a healthcare professional can help identify the cause.
2. Tingling or Numbness in Your Hands and Feet
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