What type of diet would you recommend for someone who wants to lose weight as quickly as possible?

What type of diet would you recommend for someone who wants to lose weight as quickly as possible?

It seems like there is a new type of diet every other day.  Low-carb, no-carb, cabbage soup, high protein, low protein, etc.  What type of diet would you recommend for someone who wants to lose weight as quickly as possible?  Why

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