Polymers play a significant role in the modern world and have broad applications, particularly in medicine and pharmacology. However, polymer debris represents a significant environmental threat. Therefore, new materials with exceptional performance and environmental safety are needed. The circular economy has led to the development of ‘green polymers’ with enhanced renewability, biodegradability and compostability and properties similar to those of conventional polymers but with a significantly reduced carbon footprint. Green polymers have been extensively utilized in formulating diverse materials for medical purposes. Using green polymers for medical and pharmaceutical applications may improve outcomes for non‐communicable diseases by providing safer and more effective drug delivery systems, reducing side effects with improved biocompatibility and enhancing targeted disease treatments. Green polymer‐based materials can be engineered in various applications, making them particularly beneficial in managing chronic conditions like cancer, diabetes or cardiovascular diseases, where reliable and long‐term treatments are vital. Therefore, this review highlights the importance of a comprehensive understanding of green polymers as novel material sources for improving the treatment and control of non‐communicable diseases. © 2024 Society of Chemical Industry. Published by John Wiley & Sons Ltd