The study, published by St George's Hospital Medical School in London, showed there had been a steady decline from a peak of 151 deaths in 1990.
Ms Jowell said: "This increase in deaths, after such an encouraging downward trend in previous years, is most alarming.
"Equalling distressing is the recognition that every one of these 68 deaths was preventable and might have been avoided if the individuals concerned had been fully aware of the potentially fatal consequences of solvent abuse."
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- Department Of Health And Social Issues
- Tessa Jowell
- University Of The Arts London