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Dementia warning – the sweet treat that could be raising your risk of brain decline

The compound diacetyl (DA), which is used to give popcorn its buttery taste, has raised concerns due to a possible association with Alzheimer’s, she reported.

“DA is not only ingested in foods, but it is volatile, meaning it produces an aroma – this is the well known buttery popcorn smell when you microwave, or ping open a bag of popcorn,” explains Dr Lee.

So, what does the evidence say?

A study in Chemical Research and Toxicology reported that DA is toxic to brain neurons and has the potential to cause long term neurological damage.

Scientists demonstrated that DA was able to cross the blood-brain barrier.

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“They then observed DA accelerated the clumping of B amyloid proteins – a characteristic pathological finding of Alzheimer’s disease,” reported Dr Lee.

DA also inhibited the enzyme glyoxalase 1, a key enzyme involved in detoxification and clearance of beta-amyloid from the brain.

Beta-amyloid is a microscopic brain protein fragment that accumulates in the brain, disrupting communication between brain cells and eventually killing them.

It is believed to play a role in the degeneration and death of brain cells that cause Alzheimer’s.

According to Dr Lee, DA is most likely to cause harm if eaten in food that is heated – for example, popcorn.

Other foods that contain DA include:

  • Potato chips
  • Crackers
  • Corn chips
  • Butter, butter spray oils, anything labelled as having “a buttery taste”.

DA is also found in, although in moderation this is not likely to harmful:

  • Chocolate Cookies
  • Gelatin
  • Syrup
  • Frosting
  • Chewing gum
  • Ice cream.

The FDA considers the consumption of DA in most foods is generally safe and does not mandate the need for health warnings or labelling on food or drinks.

“However, with a growing trend towards microwaving food, and the fact popcorn contains the highest concentrations of DA compared to other foods, some consumers may prefer to be informed of any possible association between DA and the development of Alzheimer’s Disease,” adds Dr Lee.

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