While many diets can induce short-term weight loss, dieters often regain a significant portion within a year, in part because dieting tends to increase sensations of hunger.

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The measuring sticks for the rankings are nutrition, daily calories, drop-out rates and both short- and long-term weight loss scores from published clinical studies.

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In advising clients with a long-term focus, Warne and Edward Jones try not to give too much weight to short-term factors.

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Although most short-term risks are mild -- bloating, weight gain and abdominal pain -- less is known about long-term risks.

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Traditionally, losing weight has required short-term sacrifices for long-term benefits.

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But this digital Battle of Verdun is not the only challenge for Google as Mozilla is also launching its mobile operating system: FirefoxOS. To make a long story short, FirefoxOS is the equivalent of ChromeOS for smartphones: a light-weight mobile operating system where the user interface and all applications are web-based.

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Under the classical gold-coin standard (1717-1914) private banks and central banks alike issued currency convertible into a fixed weight of gold, with balance sheets consisting primarily of gold coins and short-term loans denominated in local (but gold-convertible) money.

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Some of the more advanced ones required big add-ons that didn't add much to the weight (which, for the relatively short period we spent wearing the device, wasn't especially cumbersome).

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In short, GPs are well equipped to treat the consequences of obesity with drugs but not the core problem - the weight gain itself.

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