Kirill Tereshin, better known as the ‘Synthol Kid,’ faces a harrowing battle to save his arms. On Nov. 24, 2025, Russian reports indicate he’s fighting a severe infection, and doctors are considering having both of his arms removed in surgery.

Site enhancement oils like synthol have been widely used in the sport of bodybuilding. It can add extra volume to muscle groups without training or nutrition, making it an attractive option for some. However, since 2017, Tereshin has taken it a step too far .

Aiming to boast some of the biggest arms on the internet, he’s injected his biceps with synthol several times throughout the years. In 2018, he expressed fear of dying , given how out of control the habit had become. This wouldn’t be Tereshin’s first arm surgery. He received a life-savi

See Full Page