A study published in the British Medical Journal
investigated the link between sugar consumption and body weight by looking at the results of
previous studies. It found that getting people to reduce sugar intake in their diet was associated
with a reduction in their weight of about 2.2lb (1kg) in adults.
The findings also suggested that sugar increases body weight by promoting overconsumption of
energy. In other words, the taste of sugar could lead us to want to eat more of it.
The idea that sugar is bad for our health is not new. Forty years ago, a book written by British
physiologist John Yudkin claimed that high sugar consumption was linked to heart
You can make dog poop taste good with enough sugar.”
Prof Robert Lustig University of California
We know that sugar also causes tooth decay and that eating too much sugar-laden food can lead to a
poor diet lacking in nutrients.
But some experts say that sugar has actually helped to fuel the obesity epidemic. Robert Lustig,
professor of paediatrics at the University of California, is well-known for his research into the
effects of dietary sugar. He believes that sugar is addictive.
In a recent interview he said:
"There are five tastes on your tongue: sweet, salty, sour, bitter and umami.Sugar covers up the
other four, so you can't taste the negative aspects of foods. You can make dog poop taste good with
Lustig goes on to say that table sugar known as sucrose, which is a made of two sugars (glucose and
fructose) chemically bound to each other, is identical to high fructose corn syrup - which he
describes as a "chronic toxin".
Dr Alex Richardson, senior research fellow at the University of Oxford and founder director of the
UK charity Food and Behaviour Research, agrees with Lustig and says that there is far too much
sugar and empty carbohydrates in children's diets.
A spoonful of sugar in every cup of tea adds up...
"We find that highly processed foods are making up massively more of children's diets. Things like
cakes, biscuits, snacks and crisps.
"Fruit and vegetables are so vital for children. They provide essential vitamins and minerals, but
so often a third of a plate of child's food is sugary rubbish and a small amount is veg or
She warns that a diet high in sugar could lead, in the long term, to Type 2 diabetes.
Sugar comes in all shapes and sizes. It can occur naturally in fruit and milk, which is not a
concern, but when sugar is added to foods such as cereals, desserts, confectionery, processed meals
and soft drinks it can become a problem in large quantities.
Sugar can be listed under the names sucrose, glucose, fructose and maltose in the
'Added sugars', as they are known, are a good source of energy but provide no other
Sugary drinks are thought to represent more of a health issue because they do not fill us up as
quickly as the sugars in solid food do.
The British Dietetic Association's advice on sugar says: "Some research suggests that sugary drinks
make it harder for us to regulate the overall amount of calories eaten and a regular intake may be
a factor contributing to obesity in children."
Sugar consumption in the UK has declined whilst obesity and diabetes rates have increased”
Sugar Nutrition UK
But the BDA maintains that sugar does not makes us fat.
"Sugary foods and drinks can only make us gain weight if overall we eat more calories than we use
Sugar Nutrition UK, a research body which is funded by the sugar manufacturers, refutes the
suggestion that sugar is toxic or addictive.
"Sweet treats are not toxic. Major expert committees have considered the evidence in regards to
sugars and all of the diseases addressed by Lustig, and all have concluded that there is no
evidence of any harm attributed to current sugar consumption levels."
They also said that sugar intake was not increasing in line with obesity rates.
"Sugar consumption in the UK has declined whilst obesity and diabetes rates have increased. Data
from the government's national dietary surveys show that intakes of sugars have declined over the
last decade, whilst rates of obesity and diabetes have been increasing."