Giving up sugar was the worst thing I ever did.BBC3/Getty

Giving up sugar was the worst thing I ever did

Radhika Sanghani

I’m sobbing at my desk. My colleagues look at me like I’m unhinged.

“Are you okay?” they ask. I’m one month into life without sugar and I am categorically not okay. I have gone from eating at least one dessert a day (normally a chocolate pot or supermarket soufflé) to someone completely and utterly #sugarfree. It’s the first time I’ve ever tried any kind of diet and it’s an unmitigated disaster.

“I just… want… CHOCOLATE!” I wail.

Now, I’ve always eaten fairly sensibly. My meals consist of carbs, proteins, good fats (like avocado and nuts), and lots of fruit and veg. I exercise and have always been a healthy weight, so I’ve never felt the need to diet. Until now.

The constant bad news about sugar has suddenly got to me. There are stats showing that sugar consumption is at its highest level in history. The government is trying to get the food industry to cut the amount of sugar in popular products like chocolate bars by 20% by 2020.

I realise that I am the average UK adult, who consumes at least 15 teaspoons of sugar a day. (This may sound a lot, but there are seven teaspoons in just one fizzy drink can.) The World Health Organisation recommends eating just six.

A high-sugar diet is linked to obesity, and being overweight can increase the risk of getting Type 2 diabetes. A 2014 study found that there is a much higher risk of dying from cardiovascular disease among people who get a lot of their calories from added sugar.

I’d started to feel I was on a path to all-round destruction. I went online for moral support, and found the #nosugar celebrities, experts and nutritionists. They’re all over Instagram, from Hollywood stars like Gwyneth Paltrow, or ‘I Quit Sugar’ author Sarah Wilson, to ordinary girls making rye porridge in their kitchens. They had one message: don’t cut back on sugar - give it up entirely! In my state of confusion – and my desire for their glowing skin – I decide to do it.

Radhika gave up sugar for two months.BBC3

I give up desserts, alcohol and honey, but stick with the fruit, carrots and sweet potatoes, even though many ‘experts’ recommend giving up fructose.

My first fortnight involves mood swings worse than puberty. I have agonising headaches and feel permanently hungover. I cry at my desk at 4pm daily when my lunch high wears off. I snap at people. Only the calming sweetness of a lovely banana helps, but the nagging thought that Gwyneth would never dream of touching so much fructose laces that small pleasure with guilt.

After three weeks, my headaches miraculously clear. I feel semi-human, and when someone offers me a birthday slice of a Colin the Caterpillar cake, I’m actually okay saying no. Has it worked? Have I reached the nirvana point of no longer craving sugar?

No. At 11pm I find myself desperately hunting some year-old Easter mini eggs that I know are in my cupboards somewhere.

I used to be relaxed about food but now my weekly shop takes double the time as I stress about what to buy. I scour supermarkets for rice malt syrup – fermented brown rice and water that allegedly tastes like honey – and panic over the high sugar content of tomato-based pasta sauce. At birthday dinners I watch people eat cake and drink wine while I sip on a tap water.

Radhika dealt with sugar cravings.BBC3

Two months in, one of my colleagues snaps. “Radhika – you’re becoming obsessed with not eating sugar for no reason. You’re not overweight, your teeth are fine and you eat loads of vegetables. Why are you putting yourself - and us - through this?”

It was the reality check I needed.

When I tell Dr Hisham Ziauddeen, a clinical senior research associate at the University of Cambridge, about my failed experiment, he is silent.

“But… why did you do it?” he asks. I reference the recent studies on sugar. “Yes, but why did you give it up entirely?” I pause. The WHO says we should try and ensure just 5% of our daily calories come from added sugar - about 25 grams. I cannot find a medical study telling me to give it up entirely. The zero-tolerance approach I opted for came from bloggers, and celebrities like Davina McCall with her 5 Weeks To Sugar-Free book.

He sighs, and tells me that many of these self-styled nutrition experts are nothing of the sort. While Dr Ziauddeen points out the health benefits of cutting down on sugar - from improving dental care to reducing weight gain - he tells me, “Giving it up altogether seems cultish.”

It’s not just sugar. The #cleaneating movement encourages people to give up entire food groups, from dairy to grains. Dr Ziauddeen says it makes sense if you have allergies, but if not, it can do more harm than good.

Radhika with chocolate cake.BBC3

“You’re subscribing to a philosophy about eating rather than a scientifically guided way of eating, and it comes with varying degrees of problems. You have to be careful you’re not missing out on micronutrients like iron and vitamins. And being completely preoccupied with what you’re eating isn’t particularly useful for you – it takes time and mental resources away from other things you could be doing.” On the extreme end, he sees people so obsessed with what they eat that they develop psychological issues.

The government’s scientific advisory committee on nutrition (SACN) has never said that people should avoid all sugar. After a seven-year review, they found that (unsurprisingly) eating more sugar was associated with tooth decay, and that the higher your sugar consumption the larger your waistline is likely to be.

That led to government recommendations to reduce sugar in food and drink on sale in the UK – but they still say it’s okay to have some sugar.

Dr Ziauddeen explains that the #nosugar diet is generally done by people who find it easier to go cold turkey. Some people find it easier to avoid eating an entire bag of chocolate buttons if they don’t eat any at all. But his advice is the same as my Year Six science teacher’s: eat a balanced diet.

Personally, I’d rather work on my willpower than face the miserable effects of a #nosugar life. I hated the way it made me into a diet bore, and I really hated how it made me hate myself. In those two months, I actually started to feel guilty about eating apples.

These days, I’m taking the expert advice of Susan Jebb, professor of diet and population health at Oxford University. “Lots of people enjoy sugar and gain pleasure from it, so one has to find a balance between enjoyment and eating the right amount.” Ultimately, she says, “It’s up to individuals to make their own choices.”

There’s really no harm in eating a sensible, NHS-approved amount of sugar (particularly if it’s part of a balanced diet and comes with a side of exercise). I’ve learned to ignore the Insta #nosugar crew saying otherwise. They might mean well, but following their advice can sometimes do more harm than good. Just look what it did to me.

Quitting sugar was hard!BBC3