51 A new study examining the impact of fructose on human lung cells has revealed that sugar, commonly found in fruits and processed foods, may be playing a significant role in the development of lung cancer. Researchers from Lodz University of Technology used advanced Raman spectroscopy to observe changes in lung cells after fructose supplementation. The findings suggest that fructose may alter lipid metabolism in cancer cells, potentially promoting their growth. The findings were published in the journal Chemistry and Physics of Lipids. Fructose is known for its role in providing energy to cells, but this study delves deeper into its effects on both normal bronchial cells and cancerous lung cells. The researchers found that fructose had a noticeable effect on lipid droplet metabolism in both cell types. Lipid droplets, which store fats in cells, are critical in maintaining energy balance and supporting cellular functions. Alterations in their metabolism, however, are often linked to cancer progression, as cancer cells require large amounts of energy to grow and proliferate. The study focused on human bronchial epithelial cells (BEpiC) and human cancer lung cells (A549). Using Raman spectroscopy and Raman imaging techniques, the research team observed changes in cellular composition after fructose supplementation. The most significant changes were detected in cancerous lung cells, suggesting that fructose may have a more profound impact on the metabolism of cancer cells compared to normal cells. The researchers used different concentrations of fructose, ranging from 50 µM to 100 mM, and compared the effects to those of glucose, another common sugar. Their analysis showed that fructose led to higher intensities in specific biomarkers related to lipid metabolism, particularly in cancer cells. Peaks in the Raman spectra at 750 cm⁻¹, 1126 cm⁻¹, 1584 cm⁻¹, and 2845 cm⁻¹ were found to be more pronounced after fructose supplementation. These biomarkers are now being considered as potential indicators for tracking how sugars affect cancer cell metabolism. Fructose has long been associated with adverse health effects, particularly in relation to obesity and cardiovascular diseases. Its consumption has increased dramatically in recent years, primarily due to its presence in processed foods and sugary drinks. Previous research has also suggested a link between high fructose intake and the development of various cancers, including prostate and pancreatic cancer. This new study adds lung cancer to the list of cancers that fructose may affect. One of the key mechanisms at play appears to be fructose’s ability to promote lipogenesis, or the creation of fat. This process is especially active in cancer cells, which need lipids to grow rapidly. Fructose, unlike glucose, is primarily metabolised in the liver, but this research suggests its effects extend beyond the liver and into the lungs, where it may contribute to the aggressive behaviour of cancer cells.