Iron is a mineral that the body needs for growth and development. Your body uses iron to make hemoglobin, a protein in red blood cells that carries oxygen from the lungs to all parts of the body, and myoglobin, a protein that provides oxygen to muscles. Your body also needs iron to make some hormones.
The amount of iron you need each day depends on your age, your sex, and whether you consume a mostly plant-based diet. Average daily recommended amounts are listed below in milligrams (mg). Vegetarians who do not eat meat, poultry, or seafood need almost twice as much iron as listed in the table because the body doesn’t absorb nonheme iron in plant foods as well as heme iron in animal foods.
Genes go from DNA to (m)RNA via transcription. Then, RNA is converted to protein via translation. For eg, the insulin hormone is a peptide hormine (peptide is basically protein) which comes from insulin mRNA which was the result of transcription of insulin gene in beta islet cells of pancreas.
The hormonal method of birth control interferes with the hormonal balance in a woman’s body in order to hamper fertilization, ovulation or fertilized egg implantation.