What happens to your blood if too much water is lost and not replaced?

If too much water is lost from the body and not replaced, the blood becomes more concentrated, leading to a condition called dehydration. This results in an increase in blood viscosity, making it thicker and more difficult for the heart to pump. Additionally, the levels of electrolytes can become imbalanced, potentially disrupting normal bodily functions. Severe dehydration can lead to complications such as kidney damage and cardiovascular issues.