Dr Karim Ali is an Egyptian doctor who received his master's and doctorate degrees from Al-Azhar University in Cairo, where he specialised in forensic medicine and clinical toxicology. He also holds a master's degree in family medicine from Oradea University in Romania and has practiced medicine in his home country for several years. Then he travelled to Europe to begin a new story, one about his success as one of the most well-known and followed Arab doctors on YouTube. He is the author of the Functional Medicine Encyclopaedia, which is divided into five parts, as well as the book "Life Taught Me".

Dr Karim founded "Fekr Tani" (Think Again), a health awareness company with 6 million followers that aims to educate young people and future generations on the importance of maintaining a healthy mind and body, as well as gaining the necessary experiences and skills to change the future for the better. It also promotes a holistic approach to health, which includes physical, mental, emotional, and social health.

In "Fekr Tani," Dr Karim recognises that positive change requires collective efforts and works to foster a supportive community in which individuals can share their experiences, challenges, and success stories, thereby creating a network of like-minded people on a journey to better health.