What nationality is Joesthetics? German fitness influencer Jo Lindner, widely known as Joesthetics on Instagram, passed away last week at the age of 30. The renowned bodybuilding star succumbed to an aneurysm – which obstructs blood circulation and causes a clot. Jo Lindner, a popular German fitness influencer, passed away at the age of 30 due to an aneurysm. The condition occurs when an artery enlarges and causes a bulge due to blood flow pressure. While small aneurysms may not be concerning, a ruptured one can be life-threatening. The condition, which can happen in any part of the body, occurs in the weak arterial wall when an artery enlarges and causes a bulge due to the pressure of blood flow. While most may not be a cause of concern since they are small, a ruptured aneurysm can be life-threatening as it can result in internal bleeding.