Actor Philip Seymour Hoffman's overdose death at the weekend (02Feb14) appears to have had a profound effect on Demi Lovato, who has taken to Twitter.com in a bid to warn fans away from drugs. As celebrities from the worlds of music and movies continue to pay their respects, Lovato, who spent three months in rehab for addiction issues and an eating disorder in 2010 and 2011, is using the tragic news to encourage her followers to stay away from drugs. In a series of tweets, the Skyscraper singer writes, "I wish more people would lose the stigma and treat addiction as the deadly and serious DISEASE that it is. Drugs are not something to glamorize in pop music or film to portray as harmless recreational fun. It's not cute, 'cool' or admire able (sic). "It's very rare when people can actually predict their addiction and even then, you never know when too much is going to take their life or take a bad batch of whatever it is their using. It's time people start really taking action on changing what we're actually singing/rapping about these days because you never know if you could be glamorizing a certain drug to a first time user or alcoholic who could possibly end up dead because they end up suffering from the same deadly disease so many have already died from. "This stuff is not something to mess with. Why risk it? Addiction IS a disease. Please spread the word so we can take the taboo out of discussing this illness and raising awareness to people of all ages." She concludes, "RIP Philip Seymour Hoffman. An INCREDIBLE artist who lost his life to this horrible disease... May you rest peacefully and in complete serenity now that your pain is gone. God Bless..."