The trouble with men

By Thea O'Connor
Updated July 15 2013 - 2:23pm, first published June 18 2013 - 12:08pm

Tim Perkins isn't nearly so grumpy these days. His wife readily testifies to this. Since partaking in a diabetes prevention research trial earlier this year and losing 8½ kilograms, the 67-year-old feels much more energetic and motivated.

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