Iodine

Iodine is a crucial component of thyroid hormones. About 60% of the body’s iodine is stored in the thyroid gland, making it indispensable for growth, neurological development, and metabolism.

Functions and Benefits

Hormone Production: Essential for synthesizing T3 and T4 hormones, which regulate metabolism, energy, and body temperature.

Fetal Development: Critical for the brain and nervous system development of fetuses and infants, ensuring normal mental growth.

Metabolic Regulation: Supports weight control and energy use by maintaining a healthy metabolic rate.

Antiseptic Use: Iodine (povidone-iodine) is vital for wound healing, effectively killing bacteria and preventing infections.

Recommended Dietary Allowance (RDA)

Life Span	Age Group	Men (μg/day)	Women (μg/day)
Infants	0 – 12 months	110 – 130 μg	110 – 130 μg
Children	1 – 8 years	90 μg	90 μg
Teens & Adults	14+ years	150 μg	150 μg
Maternal	Pregnancy / Nursing	–	220 – 290 μg

*Tip: Just 1/4 teaspoon of iodized salt provides 95 μg of iodine, meeting nearly half of an adult’s daily needs.

Top Food Sources (μg)

Seafood: Cod (146μg), Seaweed (116μg), Oysters (93μg).

Dairy: Milk (88μg), Greek Yogurt (87μg), Swiss Cheese.

Essentials: Iodized Salt (78μg), Hard-boiled Egg (31μg).

Processed: Fish fingers (57μg), Cottage cheese.

Risks of Deficiency

Goiter & Hypothyroidism

Severe deficiency leads to an enlarged thyroid (goiter) and reduced hormone production, causing weight gain and fatigue.

Cognitive Impairment

In pregnancy, deficiency can cause cretinism—mental retardation and stunted physical growth in the child.

Disease Prevention

Intellectual Health: Maintaining adequate iodine levels is directly linked to higher intelligence levels and cognitive efficiency, especially in growing children.
Immune & Dental Health: Its antiseptic properties help protect the body from infections and support oral hygiene.