Thai Actor Nadech Reveals Thyroid Damage From Overtraining

Thai actor Nadech Kugimiya opened up on the program 'On the Way with Chom' about a major health wake-up call. He described how he threw himself into gym training obsessively from his teens until he was diagnosed with hypothyroidism, which caused his hormone and vitamin levels to crash to those typical of a 60-year-old. He has since been forced to rebalance his lifestyle and take medication under close medical supervision.

He revealed plans to enter the HYROX fitness competition next year as a mixed doubles pair with 'Yaya' (Urassaya Sperbund), though they have yet to find a day to train together. Nadech explained that his drive to master every sport stems from a dislike of long-term monotony, but his running coach warned that spreading focus across too many disciplines prevents peak performance in any single one.

If limited to one event next year, he said he would choose Olympic weightlifting — snatch and clean and jerk — because he enjoys it deeply, but he is prioritizing HYROX to honor his commitment to Yaya. He admitted he becomes restless after just two days without exercise, which explains his constant travel between training sessions across Bangkok.

Asked if he is satisfied with his current physique, Nadech said he wants to grow significantly larger without steroids, targeting a 150 kg chest press, 200 kg deadlift, and 20 bodyweight pull-ups within the year. However, an upcoming film project requires him to lean down for a specific character, so he is now cutting weight while preserving as much muscle as possible. He added that competing in a major Men's Physique show remains a future dream.

The fitness journey began nearly a decade ago during the filming of 'Lom Son Rak,' when a comfortable schedule and heavy eating led to unnoticed weight gain. Seeing himself on screen after wrapping was the catalyst for change.