FoundMyFitness · 2020-10-14 · Rhonda Patrick (host), Giselle Petzinger
Dr. Giselle Petzinger on Exercise for Parkinson's Disease
38 claims checked against research: 3 overstated 1 needing context 30 supported 4 unverified
4 No source found (not proven false)
Approximately 40% of Parkinson's disease patients exhibit mild cognitive impairment at the time of diagnosis.
"The literature is sort of all over the place, but essentially they're reporting about 40% even upon diagnosis may already have some cognitive issues. Now, that's not the same thing as dementia. So this is called mild cognitive impairment" (said at 0:07:00)
No published record matching the claim that approximately 40% of patients exhibit mild cognitive impairment at the time of Parkinson's disease diagnosis was located; this does not prove the claim false.
In Parkinson's disease, approximately 40% of cells are lost before functional impairment becomes clinically evident.
"Parkinson's disease, remember, I mean, that think about that model itself. There's a threshold there. I mean, I've lost, you know, 40% of cells before I I show any functional impairment, right?" (said at 0:30:04)
No published record matching the claim that approximately 40% of cells are lost before functional impairment becomes clinically evident in Parkinson's disease was located; this does not prove the claim false.
Levodopa is less effective for cognitive dysfunction in Parkinson's disease than for motor symptoms because cognitive circuitry also involves acetylcholine, serotonin, and norepinephrine.
"And L-dopa does not do as much—it's not as effective for cognitive function. It has a role there, but it's one of many different chemicals: acetylcholine being another one, serotonin, norepinephrine being other ones." (said at 1:08:20)
No published record matching the claim that levodopa is less effective for cognitive dysfunction in Parkinson's disease because cognitive circuitry also involves acetylcholine, serotonin, and norepinephrine was located; this does not prove the claim false.
DHA affects dopamine dynamics in animal models of traumatic brain injury.
"And of course, DHA interestingly has been shown to affect dopamine in the context of traumatic brain injury in animal models as well, so there's probably something going on." (said at 1:15:19)
No published record matching the claim that DHA affects dopamine dynamics specifically in animal models of traumatic brain injury was located; this does not prove the claim false. While dietary omega-3 fatty acids like docosahexaenoic acid (DHA) have been widely investigated in animal models of traumatic brain injury (for effects on neuroinflammation, axonal injury, oxidative stress, and synaptic markers) and separately in rodent models of dopaminergic toxicity/Parkinson's disease, no published study directly evaluating DHA's modulation of dopamine dynamics post-TBI was found.
Unverified means no publication matching the claim was located; it does not prove the claim false. Spotted an error? See the corrections policy - disputes from the people quoted are prioritized.