- Created by: Grace Sinclair
- Created on: 24-01-11 20:25
a balanced diet
A balanced diet
what makes a balanced diet?
-A Balanced diet supplies all your Essential Nutrients.
- We need a variety of nutrients for functions like respiration, movement, growth and repair of tissues
-It can cause health problems if you have too many or too little of any key nutrient.
- You need fibres in your diet as well.
vitamins and Minerals
vitamins A -helps healthy eyesight, keeps mucous membranes free from infection.
B vitamins- release energy form carbs, maintain the nervous system
Vitamins D- maintain healthly teeth and bones, absorptions of calcium and phosphorus.
Vitamins K- helps blood clots
Vitamins C- maintains the immune system, maintains the skin, and lining the digestive system.
minerals are iron, calcium, phpsphorus and zinc.
-Not eating enough vitamins can make you ill.
-Vitamins A - problems with adjusting eyes to dim light, dry skin
- Vitamins B- Anaemia, mouth sores, nerve cells degeneration.
-Vitamins c- bleeding gums, poor healing on cuts.
-Vitamins D- weak teeth and bones.
different additives thats do different things
flavouring- good taste
colourings- certain colours
preservatives- stops the food spoiling
sweeteners- add a sweet taste
thickeners- increase viscosity
pros and cons of food additives
improves appearance, taste, flavour and texture of food
add colours to food
increase shelf life
not sure how safe some are
some cause allergic reactions
some people think it causes hyperactive behavior
bacteria like warm, and moist condition
but the growth of bacteria can be slowed or stopped by:
plants need minerals for healthy growth
nitrates - needed to make proteins, which are needed for cell growth
phosphates- needed for respiration and growth
potassium- needed to help photosynthesis and respiration
magnesiums- essential for making chlorphyll
finding the optimum diet
athletes need different diets from other people
you need plenty carbs for energy
protein to build or repair muscle
plenty of water to be hydrated and control body temp
monitor fat intake
body mass index
bmi indicates if you are overweight and underweight
to work out bmi you need to
divide your body mass in kg by your height squared in m
isotonic sport drinks
during exercise you lose water,glucose and electrolytes
you use up a lot of glucose by breaking it down to release energy
sweat contain lots of water and ions called electrolytes you lose these from your body
you need to replace all of these and isotonic drinks do this.