diff --git a/education/nutrition/Nutrients.md b/education/nutrition/Nutrients.md
index 5f6b297..39eb155 100644
--- a/education/nutrition/Nutrients.md
+++ b/education/nutrition/Nutrients.md
@@ -61,13 +61,16 @@ Biological and physiological factors influence eating habits. Examples of factor
 - Relationships
 - Income
 
+## Physiological Composition
+The proportions present in males and females varies, but between 50 and 70% by weight of the body is composed of water. 
+
 # Definitions
 | Term               | Definition                                                                                                                                                                                                    |
 | ------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | Nutrients          | The life sustaining substances found in food. Necessary for growth, maintenance, and repair.                                                                                                                  |
 | Nutrition          | The study of how nutrients affect our body.                                                                                                                                                                   |
 | Diet               | A person's usual pattern of food choices. Everyone has a diet, and you don't begin and end diets, you just make changes to your existing diet.                                                                |
-| Lipid              | Fat                                                                                                                                                                                                           |
+| Lipid              | Fats and oils.                                                                                                                                                                                                |
 | Organic            | An organic substance contains *carbon*, and can be degraded.                                                                                                                                                  |
 | Essential nutrient | A nutrient is considered *essential* if it *must* be supplied by food, because the body cannot create it in sufficient quantities. If an essential nutrient is missing, it results in a *deficiency disease*. |
 | Deficiency disease | A deficiency disease occurs when an essential nutrient is missing. Examples include anemia (iron) and scurvy (vitamin c)                                                                                      |