The Himalayan Glaciers, the largest water source compared to the polar ice caps, and the seven great Asian rivers, is melting fast. What makes it different from the polar ice caps, its a major source of drinking water within the regions surrounding the Himalayan. As a result, lack of fresh drinking water will pose a major health risk in the near future, and not only that, with the glaciers melting fast, raising sea levels will be some of the issues that will be faced in the near future.
As the water level declines (of course after decades), chances of drought happening is for sure, which will have a large affect to the agricultural sectors. Countries surrounding the Himalayan, China, India, Nepal as well as the people far away from this region depend on agricultural, so you get the picture as too why this is serious.