diff --git a/education/nutrition/Proteins.md b/education/nutrition/Proteins.md
index b999d3b..f76abce 100644
--- a/education/nutrition/Proteins.md
+++ b/education/nutrition/Proteins.md
@@ -151,4 +151,18 @@ Summary:
 	- Osteoporosis
 	- Dehydration
 	- Poor kidney health
-- **undernutrition** is the
\ No newline at end of file
+- **Undernutrition** is the lack of food
+	- Widespread in poor nations
+- **Protein-eneregy malnutrition (PEM)** occurs where the diet lacks sufficient protein and energy
+	- Edema is a sign of PEM
+- **Kwashiorkor** is a form of undernutrition that results from consuming adequate energy and insufficient high quality protein
+- Symptoms in children include:
+	- Stunted growth
+	- Blond, sparse, brittle, hair
+	- Patches of skin that have lost normal coloration
+	- Swollen cheeks, arms, legs, and belly
+- **Marasmic kwashiorkor** is a form of undernutrition that results in a child with kwashiorkor who then starts to not consume enough energy; characterized by edema and wasting
+- Marasmus is a form of undernutrition that results from starvation; diet lacks energy and nutrients
+	- Loss of subcutaneous fat and deeper fat stores
+
+# Food allergies