A study published Monday details how certain hormone therapy patients appear to develop Alzheimer's disease as a result of the treatment.

Researchers have found “credible evidence” suggesting Alzheimer's disease can be transmitted from person to person through certain surgical procedures. according to In a study published in the journal Nature Medicine. The study involved a small number of patients receiving cadaveric growth hormone, which was discontinued in the UK in 1985. analysis The content of the research is explained.

The research team discovered amyloid beta deposits (related During post-mortem examination, the brains of four patients were accompanied by the onset of Alzheimer's disease. Each person died Creutzfeldt-Jakob diseasea neurological condition commonly associated with bovine spongiform encephalopathy (mad cow disease).

Signs of 'contagious' Alzheimer's disease seen in people treated with growth hormone https://t.co/R9vnwDYcKZ

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The patients died in midlife, before amyloid plaques built up in brain blood vessels, causing the physical symptoms of Alzheimer's disease and the common prodromal symptoms of cerebral amyloid angiopathy (CAA).A similar study A study conducted in 2018 found that mice injected with a hormone preparation containing amyloid beta protein developed amyloid plaques and CAA.

In the latest study, researchers found that five out of eight people who received certain hormone treatments in childhood and who did not develop Creutzfeldt-Jakob disease developed early-onset dementia between the ages of 38 and 55. It was discovered that the following conditions were met. Diagnostic criteria for Alzheimer's disease. (Related: Please, Americans – start eating regular-sized meals)

Due to the small size of the study, further research is needed to find further correlations between surgeries, treatments, and other medical actions that may lead to the development and propagation of neurodegenerative diseases.