Dineolignans are a group of natural chemical compounds found in various plants, including flaxseeds, sesame seeds, and tomatoes. They are known for their antioxidant and anti-inflammatory properties, which can potentially improve health outcomes. Synonyms for dineolignan include "lignan dimer," "neolignan dimer," and "cyclolignan." These terms are often used interchangeably to describe the same class of compounds. Dineolignans have been studied for their potential in reducing the risk of chronic diseases, such as cancer and cardiovascular disease, and may also have a role in the prevention of cognitive decline with aging. Further research is needed to fully understand the health benefits of dineolignan-rich diets.