Climate change is posing unequivocal significant threats to the human population. Various literatures cite these impacts, specifically on human health, which demand immediate action. Studies and international organizations also add that low income nations are the most exposed to these changes. Thus, this study focused on the three territory of Asia, Africa, and Latin America where majority of the underdeveloped and developing countries are located, and described the global warming effects on the status on its inhabitants using descriptive-correlational approach. With the aid of Cluster Analysis and PCA method, this study also generated a theory to explain ecological labels and common diseases that cause high mortality rate among nations.