People who eat more ultra-processed foods, such as hotdogs and soft drinks may be at higher risk for the development of dementia, according to a new study.

Eating a large amount of highly processed foods like soft drinks, nuggets, chips, and cookies may lead to a higher risk of having dementia than those who eat the lowest amount. The study published in the medical journal American Academy of Neurology found that replacing ultra-processed foods in a diet with minimally processed foods was associated with a lower risk. Although the study does not prove that these processed foods cause dementia, it shows that there is a link.

Ultra-processed foods are notoriously high in added sugar, fat, and salt while low in protein and fiber. Ultra-processed foods include soft drinks, chips, chocolate, candy, ice cream, cereals, chicken nuggets, hotdogs, fries, sausage, lunch meat, and more.

Ultra-processed foods are defined by the stages of processing they go through – such as extrusion, molding, and milling — and they “contain many added ingredients and are highly manipulated.” What’s included in this category? To name a few, “soft drinks, chips, chocolate, candy, ice cream, sweetened breakfast cereals, packaged soups, chicken nuggets, hotdogs, and [fries].”

The major difference between processed and ultra-processed is that some processed foods may have been altered, but “not in a way that’s detrimental to your health.” All ultra-processed foods are dangerous to your health. They are labeled “ultra-processed” because they contain ingredients that are known to cause health issues.

Researchers found 72,083 people from the UK Biobank, which is a large database with health information from half a million people living in the UK. All participants were 55 years or older and did not have dementia at the start of the study. They then followed these people for an average of 10 years and found that in the end, 518 people were diagnosed with dementia.

During the 10-year study, participants filled out two questionnaires about what they ate and drank the previous day. The researchers collected the data on ultra-processed foods by calculating the grams per day and comparing them to the grams of other food they ate per day to make a percentage.
On average, ultra-processed foods made up 9 percent of the daily food intake of people in the lowest group compared to 28 percent for people in the highest group. According to researchers, the main food groups that contributed to the ultra-processed food intake were beverages, sugary products, and ultra-processed dairy.

After taking into account age, gender, family history of dementia, heart disease, and other factors, they found that for every 10 percent increase in daily intake of ultra-processed foods, people had a 25 percent higher risk of dementia.

In addition to their findings, they also estimated what would happen if a person substituted 10 percent of ultra-processed foods with unprocessed or minimally processed foods. They found that this would be associated with a 19 percent lower risk of dementia.

Original source: https://www.onegreenplanet.org