Kathmandu. Cases of kidney stones tend to increase during the summer season. Rising temperatures in summer increase the risk of dehydration, or a lack of water in the body. This causes calcium and other mineral crystals to accumulate in the kidneys, eventually forming stones.During summer, a significant amount of water is lost from the body through sweat. Not drinking enough water can lead to dehydration.When the body lacks water, minerals like calcium and oxalate increase in the urine. These minerals combine to form small crystals, which later turn into kidney stones.Crystals form when calcium, oxalate, and uric acid levels rise...