Doctor: Drink you shouldn’t consume lots of if you want to lose weight ‘Long term issues’

This Morning: Dr Sara on the pros and cons of juice cleanses

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Dr Sara Kayat was invited onto This Morning to discuss some of this year’s diet trends; Veganuary, juicing and fasting. The practising NHS GP revealed the pros and cons of each diet and whether they contribute to weight loss. When speaking about juicing in particular, Dr Sara spoke about it producing rapid weight loss but also “significant” long term issues. 

Many see fresh fruit juice as a healthy way to not only get a mega-dose of vitamins but also contribute to the all important five-a-day. 

And for some, making their own fruit and vegetable juices is part of leading a healthy lifestyle. 

Around this time of year, following an over-indulgent festive period, lots of people embark on a ‘detox’ which sometimes involves the ‘juicing diet’. 

For anyone looking to lose weight especially, the ‘juicing diet’ does produce short term results, but Dr Sara was keen to explain why consuming too much juice isn’t good for your health. 

Presenter Dermot O’Leary asked: “Let’s move on to juice cleanse – what are the pros and cons to a cleanse diet?” 

“I get loads of patients doing juice cleansing,” Dr Sara admitted. 

“I guess the pros are you’re getting lots of fruits and vegetables in, in a short space of time. 

“I think the negatives are it is a very difficult diet to continue, it’s not really sustainable, people can’t really live on juice diets. 

“You tend to get more cranky and feel more angry at life when you’re on something on that long-term, you’re probably not getting enough calories and you’re not getting enough nutrients you need. 

“Also when you juice, it releases sugars more quickly and that can release little sugar-spikes.

“[In turn] you feel grumpy and it also removes a lot of the fibre which we need for our gut health and to stabilise our blood sugar. 

“So while it can cause sudden and short-term weight loss, the long term issues with it can be more significant,” the doctor added. 

It’s recommended by the World Health Organisation that adults have no more than 30g of added sugar, the equivalent of 150ml of fruit juice, per day. 

Anyone looking to increase their fruit and vegetable intake is advised to eat whole fruit rather than excessive volumes of fruit juice as you get the benefits of fibre and less sugar. 

Another diet trend Dr Sara talked about was fasting. 

She said: “Intermittent fasting has got a lot of health benefits, we can’t deny that. 

“There are things like reduction in type 2 diabetes and even longevity in life has been proved through research recently, and there is weight loss associated with it. 

“Weight loss is not because of something special to do with fasting, it’s more because you tend not to be able to eat much – calorie-wise – in the eight hours you are allowed to each versus the 16 hours you can’t [eat]. 

“So it’s because of the calorie deficit and it has been shown to reduce rates of obesity,” Dr Sara commented. 

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