Numbness on Hands and Feet
Tingling or numbness in hands, feet, or both common and bothersome symptom. Such tingling can sometimes be temporary. For example, it could result from pressure on nerves when your arm is crooked under your head as you fall asleep. Or it could be from pressure on nerves when you cross your legs too long. In either case, the "pins and needles" effect -- which is usually painless -- is soon relieved by removing the pressure that caused it.
But in many cases, tingling or numbness in the hands, feet, or both can be chronic. It also can come with other symptoms, such as pain, itching, numbness, and muscle wasting. In such cases, tingling may be a sign of nerve damage, which result from poor blood flow, stress injuries, bacterial or viral infections, toxic exposures, and systemic diseases such as diabetes.
Arginine has a dramatic effect on the nerve by dilating the blood vessel, which means opening up the blood vessel that supplies the nerve and increasing the oxygen supply to the nerve so that the nerve can actually heal itself. Early research shows that applying L-arginine to the feet daily can improve circulation in people with diabetes, which might be helpful in preventing diabetic foot ulcers. However, it does not have much effect for those who already have ulcer on their foot.
Besides relieving numbness and tingling, Arginine can reduce high blood pressure, reduce chest pain (angina), improve blood flow to the heart and brain, improve sexual function and improve wound healing.

