This is likely not your first time hearing that cholesterol is NOT a bad thing, that high cholesterol is NOT responsible for heart disease, and that LDL is NOT a “bad” fat.
A new study, the Shanghai Aging Study, has confirmed the findings of the Framingham Heart Study in showing that higher LDL (what your doctor likely still calls “bad” cholesterol) is protective against dementia. That is, in older adults those with higher LDL had lower rates of dementia and those with the government-recommended lower LDL had more dementia.
Like most nutrition studies, both of those mentioned above were observational studies, meaning they showed only correlation and did not prove cause.
Researchers hypothesize why higher levels of LDL are associated with lower incidence of dementia, such as that high LDL could be a marker of overall health or that higher LDL improves neuronal function and prevents brain atrophy.
Nevertheless, all the studies used to “prove” fat and animal foods are unhealthy were the same sort of observational studies. What’s good for the goose is good for the gander.
You can find summaries and links of research at my Ketoholic Tumbler Blog.
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