That's the claim that the man described in this article (link to article) makes. Of course, it's false. What is interesting, though, is that his claims are being taken seriously and investigated.
Roman Catholic priest, Dwight Longenecker, pointed out an interesting coincidence, namely that he noticed a related article on the feast day of Catherine of Sienna, a woman who is allegedly a saint within the Roman Catholic pantheon of saints (link to article).
Longenecker notes that Catherine of Sienna is alleged to have lived for decades on nothing except the Eucharistic host. There are many parallels between Indian mystical claims and those associated with ascetic sects and branches. As Longenecker points out: "He's a sadhu-- a Hindu holy man. The sadhus are well known for their extreme asceticism and amazing supernatural powers--levitation, painless body piercings, being impervious to extreme cold, fire walking etc."
Asceticism, whether it be Hindu or Roman Catholic, is a surprisingly attractive error. The good things that God has given are to be received with thanks by believers, not treated with contempt. The alleged miracles of ascetics, however persuasive they may seem, are no match for the teachings of Scripture. Even if it could be demonstrated that this sadhu is honestly not consuming food or water, we will simply pity the man for his intentional self-abuse.