The effects of dehydration:

Not drinking enough water can cause several health problems:

• Fatigue:   Lack of water can make daily activities more difficult, making people feel tired and weak.
• Headache:   This can be a direct consequence of dehydration, due to decreased blood volume.
• Difficulty concentrating:   Mental clarity may be impaired.
• Dry skin:   Without enough water, skin becomes dry and more prone to wrinkles.
• Kidney problems:   Chronic dehydration can cause kidney stones.
• Digestive disorders:  May cause constipation and indigestion