free radical

简明释义

自由基

英英释义

例句

1.Exposure to UV rays can increase the production of free radicals 自由基 in the skin.

暴露在紫外线下会增加皮肤中自由基的产生。

2.Smoking generates a high level of free radicals 自由基, contributing to lung damage.

吸烟产生大量的自由基，导致肺部损伤。

3.The body produces free radicals 自由基 as a natural byproduct of metabolism.

身体在新陈代谢过程中自然产生自由基。

4.Antioxidants are known to neutralize free radicals 自由基 in the body.

抗氧化剂被认为可以中和体内的自由基。

5.Certain foods, like berries and nuts, are rich in compounds that fight free radicals 自由基.

某些食物，如浆果和坚果，富含对抗自由基的化合物。

作文

Free radicals are atoms or molecules that have unpaired electrons, making them highly reactive and unstable. These particles can be found in various forms, including oxygen-derived species, and they play a significant role in numerous biological processes. Understanding the behavior of free radicals (自由基) is essential for comprehending their impact on health and aging. They are produced naturally in the body during metabolic processes, but they can also be introduced through external sources such as pollution, radiation, and cigarette smoke.The presence of free radicals (自由基) in the human body can lead to oxidative stress, a condition that occurs when there is an imbalance between the production of free radicals (自由基) and the body's ability to neutralize them with antioxidants. This oxidative stress is linked to various diseases, including cancer, cardiovascular diseases, and neurodegenerative disorders like Alzheimer's. Therefore, it is crucial to maintain a balance between free radicals (自由基) and antioxidants to promote overall health.Antioxidants are substances that can donate an electron to free radicals (自由基), effectively neutralizing their reactivity and preventing cellular damage. Common antioxidants include vitamins C and E, selenium, and various phytochemicals found in fruits and vegetables. A diet rich in these antioxidants can help combat the harmful effects of free radicals (自由基) and reduce the risk of chronic diseases.Moreover, lifestyle choices significantly influence the levels of free radicals (自由基) in our bodies. For instance, excessive exposure to UV light, smoking, and poor dietary habits can increase the production of free radicals (自由基). Conversely, regular exercise, a balanced diet, and avoiding environmental toxins can help minimize their impact. It is essential to recognize that while free radicals (自由基) are often portrayed as harmful, they also play a role in certain physiological functions, such as immune response and cell signaling.In conclusion, free radicals (自由基) are a double-edged sword in the realm of health and biology. While they can contribute to cellular damage and disease, they also serve essential functions in the body. By understanding how to manage the levels of free radicals (自由基) through diet and lifestyle choices, we can enhance our well-being and potentially extend our lifespan. Ultimately, embracing a holistic approach to health that acknowledges the role of free radicals (自由基) will empower us to make informed decisions about our health and longevity.

自由基是具有未配对电子的原子或分子，使其高度反应性和不稳定。这些粒子可以以多种形式存在，包括氧衍生物，并在许多生物过程中发挥重要作用。理解自由基（free radicals）的行为对于理解它们对健康和衰老的影响至关重要。它们在代谢过程中自然产生，但也可以通过污染、辐射和香烟烟雾等外部来源引入。人体内自由基（free radicals）的存在可能导致氧化应激，这是一种当自由基（free radicals）的产生与身体中和它们的抗氧化剂之间失衡时发生的状态。这种氧化应激与各种疾病有关，包括癌症、心血管疾病和阿尔茨海默病等神经退行性疾病。因此，维持自由基（free radicals）和抗氧化剂之间的平衡对于促进整体健康至关重要。抗氧化剂是能够向自由基（free radicals）捐赠电子的物质，有效中和它们的反应性，防止细胞损伤。常见的抗氧化剂包括维生素C和E、硒以及水果和蔬菜中发现的各种植物化学物质。富含这些抗氧化剂的饮食可以帮助抵御自由基（free radicals）的有害影响，并降低慢性疾病的风险。此外，生活方式选择显著影响我们体内自由基（free radicals）的水平。例如，过度暴露于紫外线、吸烟和不良饮食习惯可以增加自由基（free radicals）的产生。相反，定期锻炼、均衡饮食和避免环境毒素可以帮助最小化它们的影响。需要认识到，虽然自由基（free radicals）通常被描绘为有害，但它们在某些生理功能中也发挥作用，例如免疫反应和细胞信号传导。总之，自由基（free radicals）在健康和生物学领域是双刃剑。虽然它们可能导致细胞损伤和疾病，但它们在体内也具有重要功能。通过了解如何通过饮食和生活方式选择来管理自由基（free radicals）的水平，我们可以增强我们的健康并潜在地延长我们的寿命。最终，采用一种整体健康的方法，承认自由基（free radicals）的角色，将使我们能够做出明智的健康和长寿决策。