润色这段话：砷（Arsenic）作为一个常见的的金属元素广泛的分布于自然环境中，应用于各种工业技术开发中，适量的控制砷摄入可能会提高我们人体自身免疫力，有助于胎儿生长发育，但长期服用低剂量或者摄入过量的砷会对人体的神经系统、皮肤、消化系统、呼吸系统、循环系统等都可能会产生明显的化学毒害。目前，国内砷制品污染对脑和人体健康产生巨大影响，研究最多的课题是关于砷污染对外周神经系统和中枢神经系统的损害影响，其中对于中枢神经的功能损害尤为敏感。

Arsenic, a common metal element, is widely distributed in the natural environment and is used in various industrial technologies. Controlling arsenic intake in moderation may enhance our body's own immune system and promote fetal growth and development. However, long-term ingestion of low doses or excessive intake of arsenic can cause significant chemical toxicity to the human nervous system, skin, digestive system, respiratory system, and circulatory system. Currently, arsenic pollution from domestic arsenic products has a huge impact on the brain and human health. The most researched topic is the harmful effects of arsenic pollution on the peripheral nervous system and central nervous system, particularly the sensitivity to central nervous function damage.