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Neuropathy is nerve damage that causes tingling, numbness, weakness, and pain in the hands and feet. It is caused by vitamin B12 deficiency, folate deficiency, diabetes, autoimmune disorders, and other metabolic conditions. The Vitamin B12 test is the most important test for neuropathy diagnosis because B12 deficiency is one of the most common and treatable causes of nerve damage.
Neuropathy is caused by vitamin B12 deficiency, folate deficiency, diabetes, autoimmune disorders, infections, toxins, and certain medications. The most common nutritional cause is vitamin B12 deficiency, which damages the protective myelin sheath around nerves. Diabetes is the leading metabolic cause, with high blood sugar levels gradually damaging small blood vessels that supply nerves. Other causes include chemotherapy drugs, alcohol abuse, kidney disease, thyroid disorders, and inherited genetic conditions that affect nerve function.
The Vitamin B12 test is the most important blood test for neuropathy because B12 deficiency is one of the most common and reversible causes of nerve damage. This test measures serum B12 levels to identify deficiencies that cause tingling, numbness, and weakness in the hands and feet. The Vitamin B12 and Folates test is also essential because it evaluates both B12 and folate levels together, providing a comprehensive view of nutritional deficiencies affecting nerve health. Low levels of either vitamin can damage nerves and cause balance problems, making early detection critical for preventing permanent nerve damage.
You should get tested if you experience persistent tingling, numbness, or burning sensations in your hands or feet, especially if symptoms worsen at night. Testing is also important if you have unexplained weakness, difficulty walking, loss of balance, or sharp shooting pains in your limbs. People with diabetes, a history of vitamin deficiencies, heavy alcohol use, or those taking medications like chemotherapy should get tested promptly when nerve symptoms appear, as early detection can prevent permanent damage.
What this means
Your testosterone levels are slightly below the optimal range. While this is not necessarily cause for concern, it may contribute to occasional fatigue, reduced motivation, or lower muscle mass over time.
Recommended actions
Increase resistance or strength training
Prioritize 7–8 hours of quality sleep per night, try to reduce stress
Include more zinc- and magnesium-rich foods (like shellfish, beef, pumpkin seeds, spinach)
Consider retesting in 3–6 months
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