The habit of drinking water with lemon for weight loss came about as a result of the Master Cleanse, which came out in the late 1970s. The master cleanse consists of 6 to 12 glasses a day of:
You can mix enough for each glass, or make a pitcher of it for all-say drinking. You're supposed to drink a glass whenever you're hungry, instead of eating food, for at least 10 days. The lemon cleanses your system