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==Key Stage 3==
===Meaning===
A '''deficiency disease''' is an illness caused by missing some nutrients from your diet.
===About Deficiency Diseases===
: Not having a balanced diet can cause a deficiency disease.
Some Deficiency diseases you should know:
*Starvation - Not enough food, especially carbohydrates and [[Lipid|fats]]. This can be cured by eating more food.
*Kwashiorkor - Not enough [[protein]]. This can be cured by eating more meat, beans or lentils.
*Anemia - Not enough [[Iron]]. This can be cured by eating more red meat or spinach.
*Scurvy - Not enough VitaminC. This can be cured by eating [[Citrus]] fruits.
*Rickets - Not enough Vitamin D. - This can be cured by eating more fish, drinking more milk or spending more time in [[The Sun]] as the skin can make Vitamin D with the help of sunlight.
{| class="wikitable"
|-
| style="height:20px; width:200px; text-align:center;" |'''Scurvy'''
| style="height:20px; width:200px; text-align:center;" |'''Kwashiorkor'''
| style="height:20px; width:200px; text-align:center;" |'''Rickets'''
|-
|[[File:Starvation.png|center|200px]]
|[[File:Scurvy.png|center|200px]]
|[[File:Kwashiorkor.png|center|200px]]
|[[File:RicketBones.png|center|200px]]
|-
| style="height:20px; width:200px; text-align:center;" |Not enough food, especially foods with a lot of energy, causes you to become too thin.
| style="height:20px; width:200px; text-align:center;" |Too much food, especially foods with a lot of energy, causes you to gain weight and increases the risk of heart attack.
| style="height:20px; width:200px; text-align:center;" |Not enough Vitamin C causes your wounds to stop healing, sores to appear on the tongue and skin and teeth to fall out.
| style="height:20px; width:200px; text-align:center;" |Not enough [[protein ]] causes your organs [[organ]]s to swell.| style="height:20px; width:200px; text-align:center;" |Not enough Vitamin D causes [[bone]]s to become bendy.
|}
===References===
====AQA====
:[https://www.amazon.co.uk/gp/product/1782945954/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945954&linkCode=as2&tag=nrjc-21&linkId=100574c08fbbb64318256eb79ed61a76 ''Deficiency diseases (in plants), page 151, GCSE Biology, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1471851338/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851338&linkCode=as2&tag=nrjc-21&linkId=425855d5890466e47189e1c21b67a1ea ''Deficiency diseases, page 105, GCSE Biology, Hodder, AQA '']
====Edexcel====
:[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''Deficiency diseases, page 70, GCSE Combined Science, Pearson Edexcel '']
:[https://www.amazon.co.uk/gp/product/1292120207/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120207&linkCode=as2&tag=nrjc-21&linkId=22455ff53961978667722edaa64c0be5 ''Deficiency diseases, page 98, GCSE Biology, Pearson, Edexcel '']