diff --git a/education/nutrition/Minerals.md b/education/nutrition/Minerals.md
index ea29b4b..40af628 100644
--- a/education/nutrition/Minerals.md
+++ b/education/nutrition/Minerals.md
@@ -76,4 +76,37 @@ Zinc is necessary for:
 - Wound healing
 - Sense of taste and smell
 - DNA synthesis
-- Proper functioning of the nervous and immune system
\ No newline at end of file
+- Proper functioning of the nervous and immune system
+- Oysters are one of the best sources of Zinc
+
+### Zinc Toxicity
+- Excess of the UL -> Decreases HDL levels
+- Even higher can cause:
+	- Diarrhea
+	- Cramps
+	- Nausea
+	- Vomiting
+	- Decreased immune function
+	- Interfere with copper absorption and metabolism
+### Zinc Deficiency
+- loss of appetite
+- Diarrhea
+- Hair loss
+- Skin rash
+- Poor wound healing
+- Impaired sense of taste
+- Mental slowness
+- Iron deficiency anemia
+- Poor growth and development
+
+# Selenium
+- Antioxidant
+
+# Fluoride
+Fluoride is not considered an essential nutrient
+- Regular fluoride intake helps:
+	- Mineralize teeth and bones
+	- Presents tooth decay
+
+### Fluoride Toxicity
+- Dental fluorosis is an abnormal change in the appearance of tooth enamel due to chroncially high fluoride exposure during  tooth development