Can thyroid problems cause excessive hair loss and weight gain?
1. Introduction Thyroid dysfunction, specifically an underactive thyroid or hypothyroidism, directly causes excessive hair loss and unintended weight gain. A deficit in thyroid hormones fundamentally slows the basal metabolic rate, which drastically reduces cellular energy expenditure across all organ systems. This systemic slowdown prompts the body to store unburned calories as fat, leading to progressive … Read more