Despite speculation about the Russian leader’s health in recent days, the Kremlin has categorically denied that Mr Putin is ill. The famous Putin critic Valery Slovei has claimed that the head of state has cancer.
This is the first time Mr Putin has been diagnosed with Parkinson’s disease, according to a report published by The Sun for the first time.
Now, Putin critics and political analysts are making more demands on the Russian leader’s health.
Mr Slovene cited sources in the Kremlin with whom he had contacts.
He told The Sun on Friday that Mr Putin, who is eight years old, had two health conditions, adding that “one was of a psycho-nervous nature, the other a cancer problem.”
He said: “If anyone is interested in making an accurate diagnosis, I am not a doctor and I have no moral right to disclose these issues.”
Mr Slovei, a former head of the PR department at the Moscow State International Relations Institute, further claimed that Mr Putin had undergone an operation in February this year.
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Meanwhile, Mr Slovei has suggested that several of Russia’s top presidential candidates are in the running.
These include Katrina Tikhonova, Mr Putin’s 34-year-old daughter, who is currently leading an AI program.
Others include Dmitry Medvedev, who resigned as prime minister earlier this year, and Dmitry Petroshev, the country’s agriculture minister and chief executive of the Russian Agricultural Bank.
Kremlin spokesman Ms Peshkov had earlier this month denied that Mr Putin had planned to resign in the near future.
This week, Russia’s lower house of parliament, the Duma, backed a bill that would acquit Putin and his family of criminal charges despite his resignation as president.
The bill forms part of several amendments to the Russian constitution that were agreed in July this year.
Other changes include allowing Putin to run for president in two more terms.
His current term is set to end in 2024, which means he will be in power for about 24 years.
Alexei Navalny, one of Putin’s leading critics and opposition leader, tweeted: “Why does Putin need immunity now?”
Mr Navalny is slowly recovering after being poisoned by a nerve agent on a flight to Siberia earlier this year.
German medical investigators have decided that the chemical agent Novichak was used. The Kremlin has been widely blamed, but has denied any involvement.