5 ms·
> For the study, researchers followed 41,058 adults in Sweden for an average of 18 years. None had Parkinson’s at the start of the study. ... > A limitation o
by wombatmobile 6y ago
> For the study, researchers followed 41,058 adults in Sweden for an average of 18 years. None had Parkinson’s at the start of the study.
...
> A limitation of the study was that participants reported what they ate over the previous year based on memory, rather than their diets being closely monitored. Also, diets were assessed only once at the start of the study, so any changes in diet during the study were not recorded.
- person_of_color 6y agoWow. This passes for science? We really need a safe, unobtrusive device that can record body's micronutrient intake on a daily basis.
- arghwhat 6y agoGreat, then I can also get mandatory personalized ads based on my current exact nutritional needs!
- ta988 6y agoYou sure Amazon didn't patent that yet?
- amelius 6y ago> We really need a safe, unobtrusive device that can record body's micronutrient intake on a daily basis. Impossible.
- person_of_color 6y agoUh.. why.
- amelius 6y agoBecause how would you implement it? - Using a camera: can't detect micronutrients - Using barcode/RFID in the packaging: you can't have this in all types of food. - Using some kind of sensor: devices that can detect micronutrients are way too large to be "unobtrusive". - Letting the user enter the data: will never work.
- chapium 6y agoSure! Start broad, trying to determine what may be interesting and then design stricter and stricter experiments.
- ta988 6y agoUnfortunately yes, that's the problem with a lot of the studies people are making life decisions on, psychology, dietary supplements... Between studies funded by companies and/or authors with conflict of interest, unreliable methods (in vitro antioxidants) or cohorts selection issues (grad students that need the money so they lie on selection interviews for experiments or trials)... In those cohort studies, what people eat is highly dependent on their wealth, education, localisation, jobs... And they rarely control for everything (mostly because it is impossible and if they asked people to remember instead of giving them devices they don't may not have the money to spend on a carefully designed experiment).
- blockmeifyoucan 6y agoYes. All studies have limitations. You report them and interpret the results accordingly.
- adamc 6y agoMy interpretation is that the results aren't very certain.
- blockmeifyoucan 6y agoScience wins again.
- eloff 6y agoMy interpretation is the results are about as trustworthy as if they were using shiny hair in Instagram photos as a proxy for vitamin E levels.
- nsxwolf 6y agoEvery time you see a food study like this look at the details. You'll be surprised how often the data are based on these questionnaires.
- virtuallynathan 6y agoThis is how most nutrition "science" is conducted.
- eloff 6y agoWow, so basically an exercise in getting grant money to pretend like they're doing science.
- JohnJamesRambo 6y agoDon’t trust any recall study imo. I remember the stories where I used to work from a study on soy supplementation done on obese post-menopausal women. They would insist that all they ate that day was something like a half cup of green beans. The human mind is far too fallible and prone to deception for any meaningful thing to be gained from food memory. I really only trust studies now where they supplement in a controlled environment and monitor all food intake. Not surprisingly these studies often show no benefit of the supplementation.
- vmception 6y agoThere was some other study or observation that showed a lot of people trying to diet really did not associate some kinds of eating with “eating” Like someone would have a bunch of meal-sized snacks, and not consider that a meal
- hinkley 6y agoOne of the failure modes I'm aware of is people staying up past midnight and thinking of that as 'yesterday'. You had a giant bowl of ice cream and a cup of green beans today. As anyone who has ever had a morning surgery or even been friends or pet owner with someone who has had one, your body doesn't know 'yesterday', it only knows '12 hours ago'.
- sb057 6y agoThey relied on patient's memory being accurate in a study about Parkinson's?!
- three_seagrass 6y agoParkinson's mostly affects motor skills, though there can be comorbid dementia.