![\"How](\"https:\/\/blueheronhealthnews.com\/site\/wp-content\/uploads\/2021\/12\/Hypothyroidism-425375774.jpg\")
Previous studies have proven that hypothyroidism often causes dementia.<\/p>\nPrevious studies have proven that hypothyroidism often causes dementia.<\/p>\n
To prevent this from happening, we need to know how it happens. And no study has been able to find that out\u2014until now. <\/p>\n
A new study in the Journal of Clinical Endocrinology and Metabolism<\/em> reveals exactly how hypothyroid does cause dementia. <\/p>\n And frankly, it\u2019s terrifying!<\/p>\n The good news is that this discovery can lead to a simple way to reverse both hypothyroid and dementia\u2014but you have to act fast.<\/p>\n A group of scientists analyzed data of 5,142 adult participants in the Rotterdam Study in The Netherlands between 1989 and 2006. They were all middle-aged or elderly, with an average age of 63.8 years.<\/p>\n They all had measurements available for their levels of thyroid-stimulating hormone and free thyroxine (thyroid hormone) flowing through their bloodstreams. Normal free thyroxine levels were defined as 11\u201325 pmol\/L (picomoles per liter). <\/p>\n In addition, all participants underwent brain MRI scans between 2005 and 2015 to measure the blood flow in their brains. They measured blood flow in ml\/100 ml\/min, meaning milliliter of blood flow per 100 milliliter of brain per minute.<\/p>\n This is what they found:<\/p>\n 2.\tCompared to those with normal free thyroxine levels, those with high levels (25 pmol\/L) had around 2.44 ml\/100 ml\/min less blood circulation through their brains.<\/p>\n 3.\tThey found no association between thyroid-stimulating hormones and blood circulation in their subjects’ brains.<\/dd>\n<\/dl>\n This means that both high and low free thyroxine levels, even when they are on the upper and lower ends of normal, are associated with low brain blood flow.<\/p>\n This also shows that the effect of hyperthyroidism is even worse than that of hypothyroidism.<\/p>\n Interestingly, in a subset of participants whose eyes were examined, the scientists found narrower blood vessels in the retinas of people with hyperthyroidism and hypothyroidism, suggesting that a narrowing of blood vessels could also explain why blood flow through their brains was lower.<\/p>\n This is a good reason to prevent hypothyroidism, but it is important to do this naturally so that you don’t elevate your thyroid hormone level too much.<\/p>\n\n