<p>The Sundarbans, the largest mangrove forest in the world, acts as a major natural defense against cyclones along the coast of Bangladesh. This paper examines the relationship between vegetation health (measured by the Normalized Difference Vegetation Index, NDVI, and the Enhanced Vegetation Index, EVI) and cyclone-induced deaths and housing losses from 2007 to 2024. Remote sensing data from Landsat, cyclone impact data from the Bangladesh Bureau of Statistics (BBS) and EM-DAT, and spatial GIS were integrated to measure vegetation change and cyclone impact in Sundarban-protected and unprotected coastal districts. Findings indicate a minor shrinkage in thick vegetation (86% in 2007 to 85% in 2024) and growth in water bodies, which are evidence of erosion and storm activities. Statistical analysis showed that vegetation indices and cyclone impacts were negatively related, and several of these relationships were statistically significant. Regression analysis showed that EVI exhibited significance negative relationships with the death rate (<b>p &lt;</b> 0.05) and the house damage rate (<i>p</i> &lt; 0.05) in protected areas, suggesting an association between higher vegetation greenness and reduced cyclone impacts. Similar, but weaker relations were found in NDVI. The results show how important mangrove ecosystems are as natural ways to protect the coast, while acknowledging that vegetation indices show how green the canopy is, not how strong it is.</p>