Vadim Nemkov disclosed that he suffered kidney problems in 2022 that severely impacted his cardio, causing him to gas out after one round in sparring and in his first fight with Corey Anderson. He would feel strong in the first round but run out of energy quickly in the second and third. After medical consultations and tests, doctors identified the kidney issue and found a legal medication that resolved the problem. Nemkov has since eliminated all sports supplements from his diet, including creatine, protein, and BCAAs, keeping only vitamins like omega-3, fish oil, magnesium, and vitamin B. He reports feeling no worse without supplements as long as he maintains proper nutrition and sleep.
