from foods, not high-dose supplements.
4. Vitamin B12
Vitamin B12 is essential for healthy blood cells and nerves. This matters because some symptoms people describe as “poor circulation,” such as tingling, numbness, burning, or weakness in the feet, may sometimes be related to nerve problems instead.
The NIH says vitamin B12 deficiency can cause fatigue, neurological changes, and anemia, and its consumer information notes that numb or tingling hands and feet can be a sign of nerve problems.
Vitamin B12 is mainly found in animal foods such as eggs, dairy,
