5:2 Diet - 2 Week Fast Weight Loss

The 5:2 diet, or fast diet, is a diet which stipulates calorie restriction for two non-consecutive days a week and unconstrained eating the other five days. The diet originated and became popular in the UK, and spread in Europe and to the USA. It is a form of intermittent fasting.

The diet is claimed to promote weight loss and to have several beneficial effects on health; however, there is little evidence about its safety and effectiveness.

Description

The diet specifies a low calorie consumption (sometimes described as "fasting") for two days a week, which should not be consecutive, but allows unmoderated eating for the other five days. Men may eat 600 calories (2,500 kJ) on fasting days, and women 500 calories (2,100 kJ). A typical fasting day may include a breakfast of 300 calories (1,300 kJ), such as two scrambled eggs with ham, water, green tea, or black coffee, and a lunch or dinner of grilled fish or meat with vegetables, amounting to 300 calories.

Proponents say that fasting for only two days a week may be easier for dieters to comply with than daily calorie restriction.

Evidence

There is limited evidence of the diet's safety and effectiveness.

According to NHS Choices, people considering the diet should first consult a physician, as fasting can sometimes be unsafe.

Reception

The diet became popular in the UK after the BBC2 television Horizon documentary Eat, Fast and Live Longer written and presented by Michael Mosley was broadcast on 6 August 2012 and many books on the diet quickly became bestsellers, soon after.

The diet has enjoyed media attention and celebrity endorsement, but the UK National Health Service and its critics have termed it a fad diet.

See also

• Calorie restriction
• Fasting
• Intermittent fasting

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References

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