Why Dehydration Can Be Harmful To Your Heart Water plays a vital role in maintaining health, but most individuals do not realize exactly how dehydration affects your heart. When dehydration develops due to excessive fluid loss, whether through normal bodily processes, perspiration, and physical activity, your body begins to struggle. https://medium.com/@dramitpatil24/how-dehydration-affects-your-heart-a3b0130481c3