Iodine

What Does Iodine Do?

Iodine is a critical trace mineral that serves as the primary building block for thyroid hormones, specifically thyroxine (T4) and triiodothyronine (T3). In the context of performance, these hormones act as the master regulators of your metabolic rate and energy expenditure, ensuring your body is primed for physical exertion.

• Metabolic Regulation: By supporting the thyroid, iodine ensures your body efficiently converts macronutrients into energy rather than storing them as fat.
• Thermoregulation: Proper iodine levels help your body maintain internal temperature and sweat response during intense exercise and varying environments.
• Neurological Health: It plays a role in maintaining cognitive function and mental clarity, preventing the 'brain fog' that can occur during long, grueling workouts.
• Cellular Repair: Thyroid hormones are essential for protein synthesis and the repair of tissues damaged during heavy lifting sessions.
• Energy Production: It facilitates the optimal functioning of mitochondria, the powerhouses of your cells, which is vital for sustained endurance.

Clinical vs. Gym Bro Dosing

Key Insight: Since iodine is rarely the 'star' of a pre-workout, it is usually included at the 100% Daily Value (0.15 mg). If you already consume a diet high in iodized salt, dairy, or sea vegetables, additional supplementation in a pre-workout is likely unnecessary but generally safe within the RDA limits.

Side Effects & Warnings

• Thyroid Irregularity: Consuming excessive iodine over a long period can paradoxically lead to thyroid inflammation or goiter.
• Gastrointestinal Distress: Some users report nausea, stomach pain, or a burning sensation in the throat when taking iodine supplements without food.
• Metallic Taste: A common sign of acute iodine excess is a distinct metallic taste in the mouth or increased salivation.
• Skin Reactions: High doses can occasionally cause 'iodine mumps' or acne-like skin eruptions in sensitive individuals.

Contraindications: If you have a history of thyroid disease, such as Hashimoto’s or Graves’ disease, you should avoid supplemental iodine unless specifically directed by a medical professional.