diff --git a/education/nutrition/Minerals.md b/education/nutrition/Minerals.md
index 6c36a08..ea29b4b 100644
--- a/education/nutrition/Minerals.md
+++ b/education/nutrition/Minerals.md
@@ -62,4 +62,18 @@ Anemia is the deficiency disorder caused by iron efficiency
 - **Goiter** is the enlargement of the thyroid gland that is **not** the result of cancer
 	- Often occurs among populations living in areas that lack iodine in locally produced foods
 - Iodine is required for **normal thyroid functions** and the production of thyroid hormone
-- Hyperthyroidism refers to abnormally high blood levels of thyroid hormone
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+- Hyperthyroidism refers to abnormally high blood levels of thyroid hormone
+- Hypothyroidism refers to low levels of thyroid hormone
+- Signs and symptoms include:
+	- Reduced metabolism
+	- Elevated blood cholesterol levels
+	- **Cretinism** is a condition in infants who are born to iodine-deficient women. The infants have permanent brain damage and growth retardation
+	- Iodine deficiency is the most common cause of preventable intellectual disability worldwide
+
+## Zinc
+Zinc is necessary for:
+- Growth and development
+- Wound healing
+- Sense of taste and smell
+- DNA synthesis
+- Proper functioning of the nervous and immune system
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