14 Causes of Peripheral Neuropathy

Nerves are part of the body’s communication system. They carry signals between the brain, spinal cord, and different body regions to support movement, coordination, and awareness of the surrounding environment. This network helps the body respond to everyday activity and maintain balance across many functions.

Outside the brain and spinal cord, nerves extend through the arms, legs, and internal systems. Because this network is so widespread, its performance depends on many internal and external influences. Daily habits, environmental exposure, and natural changes in body systems can all affect how smoothly signals travel over time.

This article explores 14 commonly discussed factors linked to changes in peripheral nerve function. Each section explains how certain influences may interact with the nervous system and why these factors are often grouped together when examining overall nerve health.

1. Diabetes

The peripheral nervous system depends on steady energy supply and consistent circulation to support clear nerve signaling. Blood sugar and insulin play an important role in this process by helping move glucose from the bloodstream into cells, where it is used for energy. When this balance shifts, the systems that support and maintain nerve activity may respond differently over time.

Peripheral nerves, especially those extending into the feet and legs, rely on small blood vessels and stable fuel delivery to maintain smooth communication. Changes in how glucose is regulated can influence these support systems, which may alter how nerve signals are carried.

Because insulin and blood sugar regulation influence circulation and cellular energy use, they are often discussed as a key factor connected to broader changes in peripheral nerve function. This helps explain why glucose balance is frequently included when examining influences on nerve health.