HoldsUp

Ray Dorsey

Ray Dorsey is a physician and researcher working in the field of neurology. His research primarily focuses on Parkinson's disease, covering primary prevention strategies, environmental risk factors, and patient-centered care models. Additionally, his work explores the application of digital health technologies, wearable sensors, and remote AI-based screening tools for neurodegenerative conditions.

49 claims checked on air: 5 context 1 overstated 31 supported 12 unverified

What they said on air - unverified

2 citing their own research

0:00:15unverifiedvery lowParkinson's Is a Man-Made Disease: The Chemicals Linked to a

Golf courses use up to 80 times more pesticide per acre than agricultural areas.

"So, golf courses are huge consumers of pesticides, up to 80 times as much of pesticide per acre than agricultural areas." (said at 0:00:15)

A systematic search across academic literature indices did not identify any published studies or empirical datasets demonstrating that golf courses apply up to 80 times more pesticide per acre than agricultural land. While turfgrass management on golf courses (particularly on greens and fairways) involves intensive chemical inputs including fungicides and insecticides, comparative per-acre application rates vary substantially across specific agricultural crops and turf management systems, and no peer-reviewed record corroborating an 80-fold difference was found. This lack of published verification does not prove the claim false, but means the specific figure remains unverified.

0:13:35unverifiedvery lowParkinson's Is a Man-Made Disease: The Chemicals Linked to a

Paraquat use in the United States doubled over the 5 most recent publicly reported years from the US Geological Survey and tripled over an eight-year period.

"According to reporting from Carey Gillam, I think tripled amount of use in the last eight years; according to the US Geological Survey, doubling the amount of use in the last five years for which data are publicly available." (said at 0:13:35)

A search of scholarly records indexed in OpenAlex did not yield peer-reviewed publications containing the specific numerical figures reported by journalist Carey Gillam regarding US Geological Survey (USGS) agricultural pesticide use data (specifically, that annual paraquat use doubled over a 5-year period and tripled over an 8-year period). While USGS National Water-Quality Assessment (NAWQA) data track agricultural pesticide applications in the United States, the exact statistics stated could not be verified directly from the retrieved peer-reviewed literature.

0:19:09unverifiedvery lowParkinson's Is a Man-Made Disease: The Chemicals Linked to a

A cluster of eight to nine individuals, including Mary Tidwell, developed Parkinson's disease on 27th Street in Sioux Falls, South Dakota, adjacent to agricultural cornfields.

"Ms. Mary Tidwell shared with me this map. And this is of 27th Street in Sioux Falls, South Dakota, which these homes were built on top of a former cornfield. And there was a cornfield still next to the street. And Ms. Tidwell developed Parkinson's disease, as did seven or eight other people on her street in South Dakota." (said at 0:19:09)

No published epidemiological study, outbreak investigation, or peer-reviewed case report was located documenting a Parkinson's disease cluster on 27th Street in Sioux Falls, South Dakota, or involving Mary Tidwell. While personal reports and anecdotal accounts of geographic clusters are sometimes described by patients or advocates, this specific residential cluster has not been formally verified or documented in indexed scientific literature.

0:29:54unverifiedlowParkinson's Is a Man-Made Disease: The Chemicals Linked to a

Twenty percent of common foods contain detectable residues of pesticides.

"Yeah. So, um 20% of common foods have residues of pesticides." (said at 0:29:54)

No published surveillance report or peer-reviewed study matching the specific claim that exactly '20% of common foods have residues of pesticides' was identified in the searched records. While national monitoring efforts like the USDA Pesticide Data Program (PDP) and the FDA Pesticide Residue Monitoring Program track residues across hundreds of thousands of food samples, detection rates vary substantially by commodity type, farming practice (conventional vs. organic), and year, typically showing detectable residues in a much higher proportion of conventional fresh produce (often exceeding 50% to 70%), with the vast majority remaining well below established EPA safety tolerances.

0:29:59unverifiedlowParkinson's Is a Man-Made Disease: The Chemicals Linked to a

When the federal government measures pesticide residues on produce like apples, testing is conducted after the produce has been held under running water for 15 to 20 seconds.

"And when the federal government determines whether measures the residue of a pesticide, for example, in an apple, they do so after it's held under water for 15 to 20 seconds." (said at 0:29:59)

Although the USDA's Pesticide Data Program (PDP) is widely documented as monitoring pesticide residues on consumer produce using standardized laboratory sample preparation protocols designed to mimic consumer handling, no peer-reviewed journal articles in the fetched database records contained the specific textual description of the sample preparation protocol (e.g., holding produce under running tap water for 15 to 20 seconds). This does not prove the claim false, as specific testing standard operating procedures are typically detailed in agency technical manuals and SOP documentation rather than journal abstracts.

0:36:40unverifiedvery lowParkinson's Is a Man-Made Disease: The Chemicals Linked to a

Quitting cigarette smoking reduces the risk of heart disease within one year and halves the risk of lung cancer within ten years.

"Just like you stop smoking a cigarette, within a year your risk of heart disease is down; within 10 years, the risk of lung cancer is is halved." (said at 0:36:40)

No published records could be fetched and reviewed within the search limit to verify the specific quantitative risk reduction milestones (cardiovascular risk decrease within one year and halving of lung cancer risk within ten years). This does not prove the claim false, as these timelines are widely cited benchmarks in public health literature (such as reports by the U.S. Surgeon General and WHO), but direct verification against fetched abstracts was not completed.

0:43:43unverifiedvery lowParkinson's Is a Man-Made Disease: The Chemicals Linked to a

Golf courses use up to 80 times as much pesticide per acre of land compared to agricultural farms.

"So, golf courses are huge consumers of pesticides. Up to 80 times as much pesticide per acre of land than farms." (said at 0:43:43)

A systematic search of scholarly literature indexed in OpenAlex did not identify peer-reviewed publications establishing or corroborating the claim that golf courses use 'up to 80 times as much pesticide per acre of land' compared to agricultural farms. While popular reporting and advocacy reports sometimes compare turfgrass chemical application intensities to conventional agricultural acreage, verified academic sources documenting an application intensity discrepancy of this specific magnitude were not retrieved.

0:47:49unverifiedvery lowParkinson's Is a Man-Made Disease: The Chemicals Linked to a

Carl Robb, who lived adjacent to a golf course fairway and worked on its maintenance sod squad as a teenager, was diagnosed with Parkinson's disease at age 23.

"Beginning at age 10, Carl Robb, a tech entrepreneur, lived in suburban Charlotte, North Carolina, right next to the 13th hole... As a teenager, Carl was looking for a summer job and joined the golf course's sod squad... He saw nine doctors over six years before being diagnosed with Parkinson's at age 23." (said at 0:47:49)

No published medical case report or peer-reviewed study documenting Carl Robb's specific clinical history (living adjacent to a golf course fairway, working on the maintenance sod squad, and being diagnosed with Parkinson's disease at age 23) was located in the PubMed or Europe PMC databases. While this personal narrative appears in popular books and advocacy literature on environmental risk factors and Parkinson's disease, it has not been documented as an indexed scientific case report. This does not prove the biographical account false, but means it cannot be verified against the peer-reviewed scientific literature.

0:53:47unverifiedvery lowParkinson's Is a Man-Made Disease: The Chemicals Linked to a

Four out of one hundred people who worked on the Canadian sitcom 'Leo and Me' with Michael J. Fox developed early-onset Parkinson's disease.

"And what's also been recorded in the New York Times is that he was part of a cluster of people with Parkinson's: four of the hundred people who worked on his TV show, the sitcom Leo and Me, a Canadian sitcom before Family Ties, developed Parkinson's, all at an early age." (said at 0:53:47)

No published epidemiological study, outbreak investigation, or peer-reviewed medical case series was identified in PubMed or Europe PMC documenting a confirmed cluster of early-onset Parkinson's disease among the cast and crew of the Canadian television production 'Leo and Me'. While media reports (such as in The New York Times in 2002) discussed an investigation into four individuals associated with the production who developed Parkinson's disease, the claim cannot be verified against the peer-reviewed medical literature.

0:53:59unverifiedvery lowParkinson's Is a Man-Made Disease: The Chemicals Linked to a

A published study has linked green space workers to an increased risk of developing amyotrophic lateral sclerosis (ALS).

"There's one study linking green space workers to ALS." (said at 0:53:59)

No published study specifically evaluating occupational 'green space workers' and risk of amyotrophic lateral sclerosis (ALS) was identified. Published literature in this domain has instead investigated residential exposure to green space (which found a non-linear U-shaped association with ALS risk in a Northern Italian population-based case-control study, PMID: 42169130) and avocational gardening or pesticide exposure (PMID: 38591179, PMID: 24979055). The claim appears to conflate residential green space exposure or avocational gardening with an occupational cohort of green space workers.

0:54:34unverifiedvery lowParkinson's Is a Man-Made Disease: The Chemicals Linked to a

Three epidemiological studies (in Italy, Spain, and Scotland) have linked professional soccer playing to an increased risk of ALS.

"And then as you mentioned, there are three studies—one in Italy, one in Spain, I believe, and one in Scotland—linking soccer players to ALS." (said at 0:54:34)

No published records could be fetched within the tool limit to verify the specific details across the three cited cohort studies (Italy, Spain, and Scotland). While published epidemiological studies have evaluated ALS incidence in Italian professional soccer players (e.g., Chiò et al., 2005) and Scottish former professional footballers (e.g., the FIELD study), no matching abstracts were retrieved and read in this session to confirm the findings for all three countries.

1:02:35unverifiedvery lowParkinson's Is a Man-Made Disease: The Chemicals Linked to a

One in three 85-year-olds will develop Alzheimer's disease.

"There are reasons why one in three 85-year-olds will get Alzheimer's disease." (said at 1:02:35)

No matching published epidemiological records confirming or refuting the exact stated statistic (that one in three 85-year-olds will develop Alzheimer's disease) were successfully retrieved within the search budget. Although epidemiological reports (such as the Alzheimer's Association Facts and Figures) commonly cite that roughly one-third (approx. 32–33%) of individuals aged 85 and older have Alzheimer's dementia, a specific published record verifying the claim could not be fetched here.

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