Processed Meat Could Lead To Dementia, Finds Study

Do you like hot dogs, sausages, bacon, salami and all the meaty things in your sandwich? Or are you that healthy eater who would make a nice salad, but add a few pieces of salami. Well, then, this may not be the best thing to do. As per a new study published in the journal Neurology, found that these cured meats may be linked to developing dementia and cognitive decline as you age.

Since the study came out, health authorities have urged people to reduce their intake of processed red meat because of its links with cardiovascular disease, cancer and Type 2 diabetes. As per the researchers it is because of the high levels of sodium and saturated fats, and chemical additives like nitrated and nitrites found in processed red meat that causes cognitive issues.

What did the study find?

The study found that if one person replaces just one daily serving of processed red meat with plant proteins like nuts and legumes, it could lower the risk of dementia by 19%. This means, the person would spend 1.37 fever years of cognitive aging. There are other non-vegetarian alternatives too, like replacing the processed red meat with chicken and fish, which could lower the risk of dementia and reduced cognitive aging.

Senior author of the study Daniel Wang, and an assistant professor in the Department of Nutrition at the Harvard TH Chan School of Public Health noted that by replacing processed red meats with other sources of protein, you decrease your intake of harmful ingredients. This in a way also increases the intake of beneficial nutrients.

Also Read: Should You Avoid Ultra-Processed Foods?

How was the study conducted?

The researchers studied the data on more than 133,000 men and women in the United States. These participants were tracked for more than 40 years. The participants were part of two different groups of nurses, doctors, dentists, and other health professionals who on a regular basis answered questions about their diets, weight, physical activity and other lifestyle habits.

The tests evaluated the memory of the participants and tested their cognitive functions at various points throughout the study. They were also asked to fill questionnaires that explored any self-reported issues with memories and mental abilities, this measure is also known as "subjective cognitive decline", which is used to detect early stages of worsening cognitive function.

The researchers also found that those who ate a quarter of serving of processed red meat or more per day, had 13% higher risk of developing dementia, compared with people who ate little of no processed red meat. The same also had 14% higher risk of subjective cognitive decline.

Unprocessed red meats were also looked at and it was found that they were not associated with higher risk of developing dementia or worse cognitive function.

Are there any limitations?

As per experts, while they appreciate the new findings and have said that it is very important to focus on dietary habits, many have also pointed out on the limitations. In fact, the authors themselves have cautioned that their study was observation, which means it does not prove a causation. The study also did not account for other lifestyle habits, other than dietary practices.