Fatigue:

Dehydration is responsible for slowing down enzyme activity.

Constipation:

In dehydration, the colon soaks up more water than normal, spreading it to other parts of the body.

Digestive problems:

Dehydration reduces the secretion of digestive juices; this may be the cause of heartburn, gastritis and ulcers.

Hypertension:

The body's blood volume consists mainly of water. Dehydration causes the blood to thicken, making it harder to pump.

Respiratory disorders:

A large amount of water is exhaled during normal breathing. Dehydration causes the airways to narrow in an attempt to reduce water loss.

Acid-base imbalance:

Dehydration significantly reduces the body's ability to remove acid waste.

Weight gain:

Thirst is often confused with hunger. When food is consumed in place of water, weight gain can result.

Skin problems:

The skin is the body's most important detoxification pathway. Lack of water reduces the movement of toxins through the skin and causes premature wrinkles.

Liver, kidneys and bladder problems:

The liver, kidneys and bladder all require large amounts of water for detoxification. Dehydration increases the concentration of toxins these organs must eliminate.

Joint problems:

Cartilage is made up mainly of water. Dehydration increases its wear and delays healing.

Premature aging:

The body of a newborn contains over 90% water. This amount of water decreases with age by almost 50% in the elderly population.