Thyroid

The thyroid is a butterfly-shaped gland located in the front of your neck. It produces hormones that regulate how your body uses energy, control temperature, and influence heart rate and mood. These hormones, mainly thyroxine (T4) and triiodothyronine (T3), are essential for maintaining your overall metabolic balance. The thyroid's activity is controlled by the brain’s pituitary gland, which releases signals to keep hormone levels in check. When the thyroid doesn’t work properly—either producing too much or too little hormone—it can lead to health issues like weight changes, fatigue, mood shifts, or heart problems.