Aspartame: A sweetener used in diet drinks that may cause cancer
The World Health Organization's recommendations for how much aspartame we can eat or drink have remained unchanged, while concerns have been raised about this cancer-causing sugar substitute.
Two groups of WHO experts are reviewing the scientific papers in this regard. The label 'probable cause of cancer' often evokes fear and concern, but it also means that the evidence is insufficient.
Most
people consume less than the recommended amount of aspartame, but the World
Health Organization recommends that people with obesity consume even less.
Aspartame
is found in diet or sugar-free foods. It is 200 times sweeter than sugar but
does not contain as many calories as sugar.
Products Containing Aspartame
Popular brands such as Diet Coke, Coke Zero, sprite zero
, diet 7up, Pepsi Max and Seven Up Free contain aspartame sweeteners. But it is also found in about 6,000 products such as toothpaste, chewing gum, yogurt and sweetened cough drops.
Despite
its widespread use, the chemical's safety was controversial in the 1980s.
I asked
Dr. Francisco Branca, director of WHO's Department of Nutrition and Food
Safety, which is the healthier option: sugar or sweets?
"If
you have to decide whether to drink cola with sweetener or cola with sugar, I
think the third way is to drink water and limit your intake of sugary
things," he said.
He says
a review of research papers has raised "concerns" that aspartame is
not good for health. People who occasionally or occasionally drink diet drinks
or other beverages that contain aspartame.
The
International Agency for Research on Cancer at WHO first reviewed the evidence.
He
describes four possible types:
What is known to cause cancer in humans?
Rankings based on how much evidence there is from high to
low
1.Causes cancer
·
Smoking
·
Sun
·
Alcohol
·
Radiation
2.Probably causes cancer
·
Frying emissions
·
Red meat
·
Night shifts
·
DDT insecticide
3.Possibly causes cancer
·
Aspartame sweetener
·
Engine exhaust fumes
·
Lead
·
Working as a hairdresser
4.Not enough evidence it causes cancer
·
Coffee
·
Paracetamol
·
Mercury
·
Crude oil
Source: The WHO's International Agency for Research on
Cancer
BBC
The
World Health Organization has classified aspartame as one of the substances it
says is 'probably carcinogenic'. This list also includes aloe vera and lead
The
reason for the decision is three papers linking it to liver cancer.
However,
'probable' is written as it relates to scientific evidence. If the evidence
were solid, aspartame would be ranked higher.
Dr
Marie Schorbergen, from the International Agency for Research on Cancer, says
the 'evidence was of good quality and not acceptable' and 'this is a message to
researchers' to do more research on sweets.
Cancer
classification often makes false headlines. Alcohol and plutonium are
carcinogens so are in the same classification but one is much more dangerous.
Therefore, it is the job of the 'Expert Committee on Food Additives', a joint department of the World Health Organization and the Food and Agriculture Organization, to determine the safe amount of a product.
They
reviewed the evidence for aspartame causing cancer, heart disease and type 2
diabetes, but found 'insufficient evidence' and have not changed their
recommendation since 1981.
How much Aspartame is safe to consume
The safe intake of aspartame is 40 mg/kg body weight per day.
This is
not a target but a maximum recommended amount. It is related to body weight and
children are more likely to reach this limit.
Dr
Branca said putting sugary carbonated drinks on the table at dinner was 'not a
good decision' as it could set children up for lifelong sugar addiction.
He
added that there is solid scientific evidence that eating sweetners does not help
with weight loss.
He
advises people to adopt a low-sugar diet, which eliminates both sugar and
sweeteners, while companies create less sweet but tastier products.
The
biggest question is how does aspartame cause cancer? Aspartame breaks down very
quickly in the intestine into three substances: phenylalanine, aspartic acid
and methanol, the World Health Organization reports.
But
they are formed during the digestion of many types of food and have nothing to
do with cancer. According to researchers, aspartame does not directly cause
cancer in people's DNA. One possible cause could be increased levels of
inflammation in the body.
Francis
Huntwood, secretary-general of the International Sweeteners Association, said
the review had once again proven the safety of aspartame.
"Aspartame,
like other low calorie sweetener, reduces person's sugar intake through a
balanced diet & is an very important public health issue," he
added.
There
are few people who cannot safely take aspartame. These are people who have a
congenital disease called PKU. Such people cannot digest phenylalanine, which
is formed from the breakdown of aspartame.