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Beneath is an approximation of this video’s audio content material. To see any graphs, charts, graphics, pictures, and quotes to which Dr. Greger could also be referring, watch the above video.
Parkinson’s illness is a neurodegenerative mind dysfunction that impacts hundreds of thousands of individuals. What causes it? Effectively, should you take a look at way of life components related to Parkinson’s illness, the strongest dietary affiliation with elevated threat of Parkinson’s illness is dairy consumption. In truth, dairy merchandise are the solely meals group that has been constantly related to a excessive threat of creating Parkinson’s. 5 massive potential research have confirmed the hyperlink…together with the 2 Harvard cohorts, the Harvard Nurse’s Well being Examine and different Well being Professionals, which adopted greater than 100 thousand individuals, adopted for many years, within the largest evaluation of dairy and Parkinson’s illness to this point, analyzing greater than 1,000 newly identified circumstances––and all of the research discovered a hyperlink between dairy and Parkinson’s, most discovering a major hyperlink. About 50 % improve in threat total in these ingesting probably the most milk in comparison with these ingesting the least, at a p worth of lower than 0.00001, that means lower than 1 in 100,000. You’d solely get a discovering that excessive by likelihood. Okay, however why is there a hyperlink in any respect?
Regardless of clear-cut associations between milk consumption and Parkinson’s illness incidence, there is no such thing as a rational clarification, concluded one overview. A 12 months later although, we obtained a clue. Midlife milk consumption and substantia nigra neuron density at demise. What does that imply? Parkinson’s is brought about when many of the nerve cells in a essential a part of the mind are killed off. And so, should you return and see how a lot milk individuals had been ingesting of their 40s, 50s, and 60s, after which take a look at their brains on post-mortem and rely what number of of these essential neurons that they had left, in each single quadrant, neuron density was maximized in those that consumed no milk, and lowest in those that consumed probably the most milk. Even after eradicating the Parkinson’s circumstances, these ingesting two cups of milk a day had as much as 40 % fewer nerve cells in that essential mind area. What’s in milk that might be wiping out mind cells? Amongst those that drank probably the most milk, residues of the pesticide heptachlor epoxide had been present in 9 out of 10 brains. Aha, so perhaps the finding of pesticide residues extra generally within the brains of those that drank probably the most milk might clarify how milk might be cause-and-effect associated to Parkinson’s illness threat.
Now that’s not the one potential clarification. Bear in mind my video on how meat comprises that clumpy neurotoxic protein alpha-synuclein? Effectively, dairy merchandise could comprise hint quantities as properly, however we don’t have affirmation of that. Might the milk sugar galactose be the lacking hyperlink? That’s what lactose in milk breaks down into within the physique, and galactose is what’s used to induce growing old, to experimentally trigger growing old within the mind. If you drink it, the galactose is picked up by your mind inside a couple of hours, and for doses above 100 mg/kg, it seems that galactose may cause pathological alterations in mind cells, just like these noticed in Parkinson’s illness. And these portions might be reached and surpassed with the easy each day consumption of two glasses of milk, the principle dietary supply of galactose in people. And of all of your mind cells, these dopaminergic neurons, those that you might want to retain to stop Parkinson’s could also be extra susceptible to galactose-induced harm; galactose-induced oxidative stress.
Galactose can also clarify the findings linking milk-drinking with larger demise charges. Now, it’s possible you’ll be pondering, properly duh, the saturated butterfat is simply chopping individuals’s life quick. However larger mortality with excessive milk consumption is noticed no matter the milk fats content material. Skim milk is likely to be fat-free, nevertheless it’s not lactose-free.
Can’t you simply use lactose-free milk? What about Lactaid? That has the lactase enzyme added to make lactose-free milk. But it surely simply breaks down lactose into galactose within the carton reasonably than in your intestine. So, you’re nonetheless ingesting the identical quantity of galactose. No surprise then, maybe, that better milk consumption at midlife could also be related to a better fee of cognitive decline. I imply, researchers use galactose to create mind growing old within the laboratory. Administration of D-galactose, a metabolic spinoff of lactose, has been extensively used to imitate cognitive growing old by oxidative stress in animal fashions. In comparison with those that stated they “nearly by no means” drink milk, these ingesting greater than a glass a day seem extra prone to undergo a worldwide decline of their cognitive perform.
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