Water

• What is the definition of hydrated?

  The body has enough water
• What is the definition of dehydrated?


  The body does not have enough water
• Why is water vital for life?


  We can only survive a few days without it.
• What are the functions of water in the body?

  1. All cells and body tissues contain water.
  2. All bodily fluids contain water (e.g. saliva, sweat, blood, urine, digestive juices).
  3. Many chemical reactions in the body use water.
  4. Body temperature is controlled by removing heat from the body during sweating.
  5. It is needed for the digestion of food and the absorption of nutrients from the small intestine into the body.
  6. It removes waste products from the body in the urine (made in the kidneys) and faeces (made in the large intestine).
  7. It keeps the linings of the digestive system, mucous membranes, and the lungs healthy and moist.
  8. It controls the concentration of substances, such as minerals, in the blood.
  9. It helps keep the skin moist and healthy.
• What do all cells and body tissues contain?


  Water
• What bodily fluids contain water?

  Saliva, sweat, blood, urine, and digestive juices
• How does water participate in chemical reactions in the body?


  Many chemical reactions in the body use water.
• How does sweating help control body temperature?


  It removes heat from the body.
• Why is water needed for digestion?


  It is needed for the digestion of food and absorption of nutrients.
• Why is water vital for life?


  We can only survive a few days without it.
• How does water help in waste removal from the body?

  It removes waste products in urine and faeces.
• What role does water play in maintaining the health of the digestive system?


  It keeps the linings of the digestive system, mucous membranes, and lungs healthy and moist.
• How does water control the concentration of substances in the blood?


  It controls the concentration of substances, such as minerals, in the blood.
• What are the functions of water in the body?

  1. All cells and body tissues contain water.
  2. All bodily fluids contain water (e.g. saliva, sweat, blood, urine, digestive juices).
  3. Many chemical reactions in the body use water.
  4. Body temperature is controlled by removing heat from the body during sweating.
  5. It is needed for the digestion of food and the absorption of nutrients from the small intestine into the body.
  6. It removes waste products from the body in the urine (made in the kidneys) and faeces (made in the large intestine).
  7. It keeps the linings of the digestive system, mucous membranes, and the lungs healthy and moist.
  8. It controls the concentration of substances, such as minerals, in the blood.
  9. It helps keep the skin moist and healthy.
• How does water contribute to skin health?


  It helps keep the skin moist and healthy.
• What do all cells and body tissues contain?


  Water
• What bodily fluids contain water?

  Saliva, sweat, blood, urine, digestive juices
• How does water participate in chemical reactions in the body?


  Many chemical reactions in the body use water.
• How does sweating help control body temperature?


  It removes heat from the body.
• Why is water needed for digestion?


  It is needed for the digestion of food and absorption of nutrients.
• How does water help in waste removal from the body?

  It removes waste products in urine and faeces.
• What role does water play in maintaining the health of the digestive system?


  It keeps the linings of the digestive system, mucous membranes, and lungs healthy and moist.
• How does water control the concentration of substances in the blood?


  It controls the concentration of substances, such as minerals, in the blood.
• How does water contribute to skin health?


  It helps keep the skin moist and healthy.
• What is an essential part of a healthy lifestyle regarding water consumption?


  Drinking plain water regularly throughout the day
• Why is tap water in the UK considered a good option for drinking?


  It is very safe to drink, inexpensive, and easily available
• How does the cost of bottled water compare to tap water in the UK?


  Bottled water costs 500-1,000 times more than tap water
• What environmental issue is associated with the disposal of used plastic bottles?


  It causes significant environmental problems due to energy used in production and disposal
• In which types of foods is water found naturally?


  Fruits, vegetables, milk and milk products, meat, fish, and eggs
• How is water added to foods during preparation?


  Water is added during cooking and processing
• What are some examples of foods that have water added during preparation?

  • Soft drinks
  • Fruit juices
  • Pastries
  • Breads
  • Soups
  • Sauces
  • Meats (e.g., ham and bacon)
  • Boiled rice and pasta
• What are the ways water is lost from the body?

  Through sweating, breathing, urine, and faeces
• Why is it important to regularly replace lost water in the body?

  To stay hydrated and prevent dehydration
• What happens to the body if it does not replace lost water?

  The body will start to dehydrate and suffer
• What triggers the feeling of thirst in the body?

  An area in the brain detects dehydration
• How does dehydration lead to headaches?


  Dehydration causes blood to become more concentrated, affecting the brain
• What color does urine become when the body is dehydrated?


  Very dark in color
• Why does urine darken when the body is dehydrated?

  The kidneys conserve water, concentrating the urine
• What symptoms might indicate dehydration?


  Feeling weak and sick
• How does dehydration affect the body's normal chemical reactions?


  It disrupts them, leading to symptoms like weakness and sickness