Smelly breath - When you are dehydrated, your mouth produces less saliva. Reduced saliva, which cleanses, creates conditions for more bacteria to grow, causing smelly breath.
Fatigue -
When you are dehydrated, your blood has less fluid. This means the heart has to work harder to pump nutrients, oxygen, and fluid to different cells, causing fatigue.
Difficulty losing weight -
A lack of water in your body causes a slowing down of the body’s chemical reactions, meaning that the body’s ability to burn calories is slower.
Dry skin -
All types of skin, even oily skin, can become dry because of dehydration. This is caused simply by a lack of water in the skin, as the body prioritizes water for other activities.
Not sweating -
Dry skin is also driven by a lack of sweat, as sweat naturally moisturizes the skin. A decrease in sweating is the result of the body attempting to retain water.
Moodiness -
Moodiness can be understood as a secondary symptom of other symptoms of dehydration. A lack of energy, chapped lips, sore skin, etc. can all cause somebody to feel moody.
Dark circles -
The skin underneath your eyes begins to change color when the body does not have enough water, making them look sunken.
Headaches -
When the brain doesn’t have enough water content, it shrinks. In shrinking, it pulls away from the skull, causing a dehydration headache.
Sickness -
As the body needs water for most of the processes it goes through, a lack of water means that the immune system is compromised, causing a host of problems.
Heartburn -
A lack of water can cause ulcers, gastritis, and acid reflux because the stomach doesn't have enough water to produce digestive acid.