Question

What hormone is responsible for regulating sodium and water balance in the body?

Answer 1

Mechanisms meant to maintain circulatory integrity and plasma osmolality, respectively, regulate sodium and water balance independently. Variations in sodium intake and excretion regulate sodium balance, whereas changes in water intake and excretion affect plasma osmolality.
When electrolytes are dissolved in body fluids like blood, they have an electric charge. The majority of sodium in the body is found in the blood and the fluid surrounding cells. Sodium aids in the natural balance of fluids in the body.

Complete answer:
Water is the body's principal fluid, accounting for $60$ to $70$ percent of its weight, therefore keeping salt and water levels in check is essential for maintaining good fluid balance. Despite the wide variety of sodium and water consumption, your body strives to maintain a certain sodium and water balance. The body uses a complex system that includes two hormones, your kidneys, and a region of your brain called the hypothalamus to do this.
Aldosterone- Aldosterone is a crucial steroid hormone that regulates salt and water balance in the body. It controls the concentration of minerals in the fluid outside your cells, such as sodium and potassium. The body tells the adrenal glands to release aldosterone into the blood when sodium levels fall or potassium levels rise.
Antidiuretic hormone- The other important hormone that helps control fluid balance is antidiuretic hormone, often known as arginine vasopressin. Its purpose is to keep track of how much water your body loses through urination. It binds to kidney receptors and stimulates water reabsorption into circulation, reducing urine production.

Note:
Limiting the quantity of salt in your food will help your health while your hormones perform the heavy job in managing sodium that's already in your body. You should limit your salt consumption to fewer than $1,500$ milligrammes per day, while some people's limit is $2,300$mg. To do so, eat minimally processed meals such fruits, vegetables, whole grains, and lean protein sources, and avoid sodium-laden packaged and restaurant items.