A diet rich in vitamin K to reduce the risk of dementia and Alzheimer’s disease

Dementia is a disease that impairs cognitive function. Symptoms can include memory loss and the ability to act in ways that can impair quality of life.
In a new study in rodents, the researchers looked at how vitamin K could affect cognitive abilities in elderly rats. Researchers have learned that the vitamin can improve cognitive ability and protect against the risk of dementia.

The risk of developing dementia increases with age. Dementia is a group of diseases, the most common of which is Alzheimer’s disease, which affects millions of people. Dementia is not currently curable, but some medications can relieve symptoms. In addition, researchers continue to look for ways to reduce the severity of symptoms or prevent the disease from progressing so quickly.

New research suggests that vitamin K may help prevent “cognitive impairment.” The new study, which was presented at the 2022 meeting of Experimental Biology. On 5 April, the administration of vitamin K supplementation to rats was tested.

Dementia at first glance

Dementia “is a general term for the loss of memory, language, problem-solving, and other thinking skills that is severe enough to interfere with daily life. »
Alzheimer’s disease is thought to be caused by the accumulation of abnormal proteins in the brain called amyloid plaques. This can prevent brain cells from signaling in the same way as before and damage them. There are other types of dementia, which is thought to be caused by decreased blood flow to the brain, which can also damage brain cells.
According to the latest data, people aged 65 and over are at the highest risk of developing Alzheimer’s dementia.

Signs and symptoms of dementia include:

– Forget the names of loved ones
– Mood swings
– Inability to remember old memories
– Difficulty performing tasks
– Hard to communicate

Vitamin K in short

To stay healthy, it is important to get a variety of vitamins and minerals. One of the vitamins that affects brain and bone health is vitamin K, which is often found in green leafy vegetables. The aging process is associated with a deterioration in brain function. Vitamin K is a fat-soluble natural vitamin that protects the brain from the development of Alzheimer’s disease.
The recommended daily allowance of vitamin K depends on age. Adequate amounts of vegetables and fruits are helpful in maintaining a normal amount of vitamin K. However, if you can’t take them, there are also supplements that would replace natural sources.

Vitamin K and dementia study

Because vitamin K can affect brain function, the researchers in this study wanted to find out how it affects cognitive function in rats. The researchers conducted a 17-month study in rats. One group received a vitamin K supplement and the other did not. The researchers prescribed menaquinone-7 (MK-7), which, according to the authors, “is an important form of vitamin K2.” Cognitive performance tests were performed on rats throughout the study. According to the authors, they were tested to “assess cognitive levels, anxiety, and depression-like behaviors. »
At the end of the study, the levels of cognitive impairment, depression, and anxiety were reduced in rats taking vitamin K supplements. In addition, the authors note that these rats experienced “better spatial memory and learning abilities. »

“Vitamin K2 has shown great promise in inhibiting age-related behavioral, functional, biochemical, and histopathological changes in the aging brain,” the study said. They also conclude that “The most important consequences are the focus on vitamin K in the elderly and its association with Alzheimer’s disease and other age-related neurodegenerative diseases. »

Vitamin K can support brain health.

There are many forms of vitamin K, and they all have different food sources. MK-7 is found in pickled vegetables, and the benefits of consuming these foods are known. They are great for your gut microbiome, which has a well-established relationship with cognitive decline.



* Presse Santé aims to communicate health knowledge in a language accessible to all. Under no circumstances should the information provided replace the advice of a healthcare professional.

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