Nov 13 2014

Food Babe Misinformation on Travel

The “Food Babe” is an excellent object lesson in why people who are not qualified should not be dispensing advice to the public. Spouting uninformed opinions is one thing, but presenting information in an authoritative manner as if from an expert should not be attempted by the non-expert.

If you want to dispense useful information on your blog or website (not just opinion) then it is appropriate to cite credible sources and experts and to accurately convey their information. “These are the facts concerning flu vaccines, according to the CDC,” then quote the CDC directly, with a link to the source.

Unfortunately the web is cluttered with people who really have no idea what they are talking about giving advice as if it were authoritative, and often that advice is colored by either an ideological agenda or a commercial interest. The Food Babe is now the poster child for this phenomenon.

She recently published advice for healthy traveling. The page has since been deleted, apparently in response to criticism, but it is cached here. The FB’s advice contains some real howlers, demonstrating that she lacks even the most basic scientific literacy.

She writes:

When your body is in the air, at a seriously high altitude, your body under goes some serious pressure. Just think about it – Airplanes thrive in places we don’t. You are traveling in a pressurized cabin, and when your body is pressurized, it gets really compressed!

Compression leads to all sorts of issues. First off your body’s digestive organs start to shrink, taxing your ability to digest large quantities of food. Secondly, this compression reduces the ability for your body to normally circulate blood through your blood vessels.

FB apparently thinks that pressurized cabins are pressurized to greater than one atmosphere of pressure, or pressure at sea level. In reality, most jets are pressurized to between 6-8,000 ft, (Boeing says their cabins are pressurized to between 5,400-7,000 ft.) which is less than the pressure at ground level, but much higher than the outside pressure at typical cruising altitudes of 35,000 ft.  Air and Space magazine explains:

On the ground, the airplane is unpressurized and the outflow valve is wide open. During preflight, the pilot sets the cruise altitude on a cabin pressure controller. As soon as the weight is off the main wheels at takeoff, the outflow valve begins to close and the cabin starts to pressurize. The airplane may be climbing at thousands of feet per minute, but inside the cabin, the rate of “climb” is approximately what you might experience driving up a hill. It might take an average airliner about 20 minutes to reach a cruise altitude of, say, 35,000 feet, at which point the pressurization system might maintain the cabin at the pressure you’d experience at 7,000 feet: about 11 pounds per square inch. Your ears may pop, but the effect is mild because the climb rate is only 350 feet per minute. When the airplane descends, the pilot sets the system controller to the altitude of the destination airport, and the process works in reverse.

This lower pressure may cause some discomfort in your middle ear, depending on how efficiently your ears equalize the pressure. Swallowing helps, and some people chew gum or have a drink handy to help this process. If you have a cold and congestion, equalizing pressure may be more difficult, and therefore using a decongestant prior to flight may be useful.

The lower pressure also does contribute to water loss and therefore dehydration. FB does correctly state that it is important to keep well-hydrated during flights, especially long flights. Cabins are kept very dry. FB says 10% humidity. One source I found says 12% (not a significant difference). the World Health Organization reports cabin humidity is usually <20%. One study of intercontinental flights found the average humidity was 5%. By comparison, home and office humidity is usually around 30%, but can be lower when heating is being used.

The dryness is a source of concern, and can lead to dry eyes, skin, and mucous membranes, as well as dehydration. Travelers with special medical conditions should consult their physician prior to travel if they are unsure how to compensate for the dry environment. Having moisturizer, lip balm, and access to fluids on long flights is helpful. You may also want to remove your contacts.

Incidentally, the reason for the dry air is that at high altitude the air is very dry, and humidifying the air would be expensive and impractical.

Regarding air quality, FB has this to say:

The air you are breathing on an airplane is recycled from directly outside of your window. That means you are breathing everything that the airplanes gives off and is flying through. The air that is pumped in isn’t pure oxygen either, it’s mixed with nitrogen, sometimes almost at 50%. To pump a greater amount of oxygen in costs money in terms of fuel and the airlines know this! The nitrogen may affect the times and dosages of medications, make you feel bloated and cause your ankles and joints swell.

I have no idea what she is talking about here. First, air is partly recirculated and partly pumped in from the outside. The outside air at 35,000 feet is cold and dry, but otherwise is likely fairly clear. Air in the cabin is completely replaced every 2-3 minutes. It is also highly filtered, removing between 97-99.9% of the germs and other large particles in the air. The air quality is likely better (other than the dryness) than your average office or movie theater.

FB seems distressed that the air that is being pumped in isn’t pure oxygen. It’s a darn good thing it isn’t. Perhaps she is not familiar with the Apollo 1 disaster – pure oxygen atmospheres are fire hazards.

She also is concerned that the air may contain up to 50% nitrogen. She is apparently unaware that the earth’s atmosphere is 78% nitrogen, 21% oxygen, and 1% CO2 and other gases. Yet according to FB’s bizarro world the evil airlines are contaminating our pure oxygen with 50% nitrogen to save money.

Here is some classic FB fearmongering.

Did you know certain countries require that airplanes and even passengers be sprayed with pesticide before they take off? This means if you are visiting one of these countries you are breathing in these fumes potentially all flight, especially if they were sprayed on board. Horrific!

While this is true, it is somewhat less than “horrific.” The WHO reports that international law requires that flights from countries that carry insect-born diseases, like malaria, disinfect their cabins to prevent the spread of those diseases through air travel.

Procedures may include spraying the cabin with insecticide between flights, prior to passengers boarding, or even after passengers have boarded but prior to takeoff. They report:

Passengers are sometimes concerned about their exposure to insecticide sprays during air travel, and some have reported feeling unwell after spraying of aircraft for disinsection. However, WHO has found no evidence that the specified insecticide sprays are harmful to human health when used as recommended.

The most commonly used insecticide for this purpose is permethrin. This has been used for years, is used in insect repellent meant to be sprayed on the skin, and is also impregnated into clothing to help prevent insect bites as disease vectors.

There is some legitimate controversy over the risk-benefit of spraying insecticide in cabins, mostly for the airline crew who are exposed daily. Non-chemical means of disinsecting cabins are being explored. The US also now requires passengers to be informed when insecticide is being used.

Here are FB’s specific recommendations for in-flight health and safety:

1- Drink 8 ounces of water for every hour of flying time
2- If you experience a headache, pains or aches, think about using turmeric, garlic or willow bark which are all natural alternatives to aspirin
3- Fast or eat small light carbohydrate rich whole foods.
4- Limit any heavy dairy or protein rich foods.
5- Whole grain carbohydrates are better tolerated than proteins at a high altitude.
6- Do not drink alcohol or caffeine on long flights
7- Walk or stretch every 30 mins while in flight, if you can’t get up from your seat, rotate your ankles and raise your arms over your head to stretch
8- Keep your hands clean with natural hand sanitizer spray and avoid touching your face as much as possible
9- Don’t forget to take your natural herbs that can strengthen your immune system

Her recommendations are a combination of common sense and widely known advice and outright BS.  Let’s go down the list:

1 – While it is a good idea to bring fluid and keep well hydrated, the 8oz per hour is simply made up. You may need more or less depending on conditions.

2 – Why not use aspirin? This is purified, has a known dose, no contaminants, and is very safe.

3 – Baseless recommendation without evidence.

4 – Baseless recommendation without evidence.

5 – Baseless recommendation without evidence.

6 – This one is reasonable, and you will find the same advice from airlines and travel resources.

7 – This one is reasonable, and you will find the same advice from airlines and travel resources. Again, the “every 30 minutes” is oddly specific, without a reference, but it gives the impression of being evidence-based.

8 – This is generically true whenever in crowds. However, as I stated above, the airplane itself is not a particularly germ-ridden environment, is is likely less so than many other crowded locations.

9 – There are no herbs that strengthen your immune system, so this one is pure nonsense. In fact, it may give people a false sense of security.

Conclusion

The Food Babe is shockingly scientifically illiterate and should not be giving advice to anyone.  She is not an expert. She does not seem to have any respect for expert opinion or carefully sourced information. Her advice is a crap shoot of common knowledge, fearmongering, gross scientific illiteracy, misinformation, and ideological nonsense.

52 responses so far

52 Responses to “Food Babe Misinformation on Travel”

  1. SteveAon 13 Nov 2014 at 7:22 am

    “The nitrogen may affect the times and dosages of medications, make you feel bloated and cause your ankles and joints swell.”

    She seems to think the nitrogen will give you the bends.

    “7- Walk or stretch every 30 mins while in flight, if you can’t get up from your seat, rotate your ankles and raise your arms over your head to stretch”

    I doubt remembering this will be an issue if you’ve been drinking all the water in (1).

  2. BillyJoe7on 13 Nov 2014 at 7:37 am

    Two words other than “Food” and “Babe” came to mind every time I read “FB”, even though I’m always careful not to use sexist language. I am a little ashamed.

  3. mumadaddon 13 Nov 2014 at 7:44 am

    It is ‘fatuous bint’? I think that would be accurate…

  4. Bruceon 13 Nov 2014 at 8:27 am

    “When your body is in the air, at a seriously high altitude”

    As opposed to a comically high altitude?

    “Did you know certain countries require that airplanes and even passengers be sprayed with pesticide before they take off? This means if you are visiting one of these countries you are breathing in these fumes potentially all flight, especially if they were sprayed on board. Horrific!”

    Happens regularly flying in and out of Zimbabwe and other African countres, usually one of the flight attendants will walk down the cabin with a spray can in each hand spraying behind them and over their head to each side… there were times when travelling by road across country we used to go through check-points and have our cars sprayed. I know it is done in and out of Australia too, and while it is not entirely pleasant, as Steve said, there is no evidence whatsoever it does any harm to humans.

    Even if you could find an isolated case or two, the risk to benefit ratio is huge. I wonder how Factless Babe would react if a few little tiny natural mosquitos (who happen to be the biggest killers of humans on the planet) somehow made their way to her area and started an outbreak.

  5. mumadaddon 13 Nov 2014 at 8:45 am

    Unfortunately the link to the cached page didn’t work for me.

  6. The Other John Mcon 13 Nov 2014 at 9:33 am

    How awesome would it be if the person next to you on an airplane just started chomping on garlic to relieve their headache?!? I’d be ordering me some alcohol, dehydration be damned.

  7. Steven Novellaon 13 Nov 2014 at 9:47 am

    Yeah – it seems that even the cached site has been scrubbed. I did download it first, however, so I have a local copy. Any suggestions on how to make it available?

  8. mumadaddon 13 Nov 2014 at 9:50 am

    There are quite a few free image hosting sites – photobucket.com springs to mind.

  9. dangerismymiddlename.comon 13 Nov 2014 at 10:24 am

    What horrible advice: she didn’t even warn us about the chemtrails! 🙂

  10. mumadaddon 13 Nov 2014 at 10:53 am

    Actually, the simpler thing to do would be screen capture it as an image file and host it on this site…

  11. stimpyvanon 13 Nov 2014 at 11:09 am

    Self-righteous ignorance is by far my most favorite kind of ignorance.

    Before the age of the information superhighway, my exposure to profound ignorance was limited to people I met in person and letters to the editor printed in the local paper. Now I am awash in a deluge of stupidity. Ironic that the tool used to distribute misinformation on such a grand scale could, with almost no effort, be used to dispel ignorance instead.

    Keep up the stellar work Food Babe. The fame you’ve achieved through broadcasting your bullshit is, no doubt, an inspiration to other idiots that have no idea what they are talking about.

  12. Willyon 13 Nov 2014 at 11:45 am

    Did she warn about the danger of consuming GMO foods in an atmosphere contaminated with nitrogen? :«)

    Why do these kooks all have such great names? Vani Hari, Vandana Shiva, Zen Honeycutt…not a Margaret or a Myrtle to be found.

  13. SquirrelEliteon 13 Nov 2014 at 12:11 pm

    I was curious about FB’s recommendation for a “natural hand sanitizer spray” and wondered how good they might be.

    A quick search turned up this link on a digital fashion site that actually has some decent information:
    http://fashionista.com/2014/05/natural-hand-sanitizers

    Of course, the distinction between organic alcohol and ethyl alcohol in the second paragraph is cringe-worthy.

    But, it points out the lack of studies to support the claims, notes that natural is essentially a meaningless word, and the lack of standards for effectiveness of natural products.

    There’s a little bit of balance in pointing out that the products may have value as moisturizers and cleaners even if they don’t kill all the bacteria.

    And, I wonder how gentle witch hazel and bitter orange really are on the skin?

  14. Kieselguhr Kidon 13 Nov 2014 at 12:30 pm

    I’m having a very hard time understanding what gain you seek to achieve by making it easier for Food Babe’s readers to travel easily.

    I seem to remember that while the cabin is quite dehydrating for the reasons Dr. Novella mentions, a massive weight of water builds up in the space between the cabin and the outer shell of the aircraft (which you’d expect, from condensation) during flight, and there’s been considerable effort put into recirculating that. I understood it to be quite a challenge.

  15. Ekkoon 13 Nov 2014 at 1:00 pm

    She lost me at “airplanes thrive”…

  16. mumadaddon 13 Nov 2014 at 1:04 pm

    “She lost me at “airplanes thrive”…”

    I noticed that too. Maybe she lives in a cartoonish world, where objects have personalities.

  17. jsterritton 13 Nov 2014 at 1:22 pm

    I think she thinks she’s folksy. Classic hucksterism. Here’s how she began her tirade against Fig Newtons:

    “I was shopping the other day minding my own business and I saw a product that I had to share with you right away.”

    Minding my own business?!

  18. worlebirdon 13 Nov 2014 at 1:27 pm

    I was going to suggest linking to the Wayback Machine on the Internet Archive, but sadly it looks the Food Babe is actively making sure that no one can remember when she screws up. She’s got a robots.txt file set up on her site to prevent the Internet Archive from archiving anything she ever posts.
    Sounds like she me be completely aware that she frequently is just making shit up.

  19. steve12on 13 Nov 2014 at 2:08 pm

    She clearly thinks that atmosphere is 100% o2. What have we done in US education that someone wouldn’t know that? That’s just too basic not to know.

    In a way, I find this the most shocking thing.

    I kind of feel like navigating the world as though you already know everything must be like being high all of the time (paraphrasing Janine Garofalo).

  20. ScubaSharkyon 13 Nov 2014 at 2:20 pm

    Hey Steve, thanks for this blog entry. It’s always fun to see you knock the FUD Babe down a peg or two. Two things I’d like to point out:

    1. This FB entry is from 2011. It was recently ‘discovered’ and circulated by skeptical social media groups this last week.

    2. The reason aircraft humidity is kept low is to reduce corrosion of the airframe. The new Boeing 787, being built with composite materials is able to handle higher cabin pressures and humidity, improving passenger comfort.

    Keep up the good shilling, err, I mean work. 😉

  21. ScubaSharkyon 13 Nov 2014 at 2:24 pm

    Oops. I meant to include this link. It discusses cabin air pressure, corrosion, and the 787 ‘Dreamliner’. http://usatoday30.usatoday.com/money/biztravel/2006-10-30-boeing-air-usat_x.htm

  22. tmac57on 13 Nov 2014 at 2:28 pm

    steveA-“I doubt remembering this will be an issue if you’ve been drinking all the water in (1).”

    Get outta my head man!!!

    Steve N.- “Yeah – it seems that even the cached site has been scrubbed. I did download it first, however, so I have a local copy. Any suggestions on how to make it available?”

    hmmmmm… maybe we should just let this one die a humane death.Remember the lessons we learned from Jurassic Park? 😉

  23. EtTuCarlon 13 Nov 2014 at 2:28 pm

    I saved it here, but unfortunately it turns out this stupid FreezePage thing deletes stuff after some period of inactivity so this isn’t a good long-term option either.

    http://www.freezepage.com/1415667665TBMRBWICKU

  24. tmac57on 13 Nov 2014 at 2:32 pm

    ScubaSharky- “…FUD babe” I like it!!!

    The corrosion thing is interesting too…thanks.

  25. ScubaSharkyon 13 Nov 2014 at 2:35 pm

    Yup. FUD Babe. Fear, Uncertainty, and Doubt. It perfectly describes her modus operandi. FUD is also a brand of packaged meat products sold in Latin America. The more you know… 🙂

  26. ScubaSharkyon 13 Nov 2014 at 2:38 pm

    PDF of the original FB article: https://attachment.fbsbx.com/file_download.php?id=349601718552090&eid=AStc7XS067oap5D70GSAAvbY0LwJ_fwy2ibydnDsyKZWSkY-EqWZtA5Wghf2oM9P1_o&ext=1415906082&hash=ASs6i0Z1vAp7CFlM

  27. ScubaSharkyon 13 Nov 2014 at 2:40 pm

    Well crap. That didn’t work. For anyone interested, it has been posted to the wall of the GMOLOL Facebook group.

  28. pdeboeron 13 Nov 2014 at 2:51 pm

    2- If you experience a headache, pains or aches, think about using turmeric, garlic or willow bark which are all natural alternatives to aspirin

    Willow bark contains the metabolite of Aspirin. Add one more facepalm!

  29. pawelz9999on 13 Nov 2014 at 6:24 pm

    Unfortunately, the following statement:
    “9 – There are no herbs that strengthen your immune system, so this one is pure nonsense.”
    is probably not true.

    Quick search for “herbs immune” on PubMed gives a lot od results:
    http://www.ncbi.nlm.nih.gov/m/pubmed/

    It seems to be a good practice not to use statements like “there are no … (animals|herbs|people|evidence|etc.)”, and even if one finds it very probable, they may use “I don’t know the evidence” or “according to my knowledge no evidence has been found yet”.

    Best regards
    Paul

  30. BBBlueon 13 Nov 2014 at 6:46 pm

    Any idea what FB’s Q Score is? She is an awfully easy target to criticize, and so I wonder if skeptics pay more attention to her than the general public.

  31. Willyon 13 Nov 2014 at 8:32 pm

    Airplanes thrive…I kinda blew past that one without processing it. Thanks for highlighting it, mumadadd.

    Thanks, too, jsterritt for the fig newton reference. Regarding the HFCS in said newtons, in FB’s own words: “High Fructose Corn Syrup – This chemically refined sugar has been shown to cause more weight gain than regular sugar. Even when eaten in moderation, it’s said to be a major cause of heart disease, cancer, dementia and liver failure. Some high fructose corn syrup is even contaminated with mercury.”

    Sadly, she has just released a book: “The Food Babe Way: Break Free From the Hidden Toxins…yada, yada, yada”.

  32. Dreaded Anomalyon 13 Nov 2014 at 9:49 pm

    Here’s a screenshot of the original article: http://i.imgur.com/JW0tZO4.jpg

    Another skeptic blogger also reposted it on his own blog: http://skeptic78240.wordpress.com/2014/11/11/food-babe/

  33. Chewon 13 Nov 2014 at 10:05 pm

    She’s had the Google cache and Wayback machine purged of her stupidity. Here is a screencap of some of her original article.

    http://i.imgur.com/By6OA73.jpg

  34. DanDanNoodleson 13 Nov 2014 at 10:21 pm

    One of the worst thing about Hari is the way she creates an airtight bubble of ignorance around her. Anyone who questions her “advice” or argues on her Facebook page is immediately banned from replying to her posts. (There’s a “Banned by the Food Babe” group with several thousand members, I gladly count myself among them.) I’m not talking about being abusive, or threatening; just asking questions can be enough. Some people have gone to her page for the first time and found themselves already banned, leading to a suspicion that she maintains sock puppet accounts in the groups that mock her, to generate lists of people to proactively ban.

    And then of course, there is her “travel tips” page, which sat on her site for three years until someone who wasn’t one of her slavish followers noticed how dumb it was — it disappeared literally within hours of the first mocking comments showing up (again, sock puppets). Another page on her site (also about travel) linked back to the “disappeared” one, and brought up the whole compression thing again; I left a comment pointing out that she should probably remove the link given that she had removed the page, and also why her ideas about compression were wrong. Just checked, the page has been updated: no mention of the other page or compression, and — surprise! — my comment has been deleted.

    Her attempts to whitewash the conversation are almost comically Orwellian.

  35. laserfloydon 13 Nov 2014 at 11:06 pm

    I saw a couple of people comment on her “airplanes thrive” statement. Ironically that’s the truest part of that statement. Jet engines are more efficient at high altitudes. She got it bonehead wrong on everything else though. 😛

  36. rayman2k1on 14 Nov 2014 at 12:07 am

    @pawelz9999 can you point me to a few of the results that you get from that pubmed search that support a hypothesis of certain herbs “improve/maintain/strengthen/etc” the immune system?

    i ask because as far as i know, there are no such studies. steve, and other SBM contributors have tackeld this issue several times before . so, i think it’s completely fair for steve to state his position in the way that he has.

    and, here is another link that talks at length about “boosting immunity”:
    http://www.health.harvard.edu/flu-resource-center/how-to-boost-your-immune-system.htm

  37. Nickon 14 Nov 2014 at 12:16 am

    “airtight bubble of ignorance”

    love that. stealing it.

  38. Nickon 14 Nov 2014 at 1:04 am

    would almost be worth setting up some sort of mirror site to capture everything she deletes. would have to violate robots.txt ettiquette, though. and i’m sure she’d make a copyright claim of some kind.

    The nice thing about FB is how transparent the approach and agenda are, especially now that she’s recently come out with her two big money plays.

    1 – come out as an authority figure in defense of the poor huddled masses.
    2 – quietly collect affiliate income by recommended certain health foods.
    3 – build a fawning, brainwashed following by carefully maintaining an ‘airtight bubble of ignorance’
    4 – follow traditional cult building practices (discredit alternative authority, any other source of info, etc.)
    5 – once the following reaches critical mass, introduce the real money makers (“sign up for my $10/month diet plan”, and “buy my new book”, although I’m pretty sure the main setup was just for the diet plan)

    A brilliant plan, looked at from a distance, and well executed.

  39. DanDanNoodleson 14 Nov 2014 at 1:22 am

    I didn’t even think about this earlier, but that page evaporating from the Google cache in less than a week probably means that she (or her lawyers) contacted them and requested its removal — Google will do this if you can demonstrate that you are the content owner, which obviously she is here. (Or, more accurately, she *was* the owner, now that the content has been disappeared.) More whitewashing.

  40. wooflepoofon 14 Nov 2014 at 3:17 am

    There are a ton of screenshots and local caches of her blog posts and deleted comments floating around in Facebook groups such as “Banned by Food Babe”, “Chow Babe”, and others. Thanks to her masterful invoking of the Streissand effect, every time someone finds a blog post like this one, makes a comment on twitter, or posts something to her Facebook page, someone takes a screenshot and it gets spread around.

    There was a brief period of time when she went around telling people their post or image was defamatory and demanded they remove it. I guess someone told her what that word meant and she subsequently deleted the posts, but its all still out there.

  41. jbsegalon 16 Nov 2014 at 10:01 pm

    Hey look, she did it again, in ’12 – http://foodbabe.com/2012/03/31/whats-the-best-airline-for-health/
    – “Remember from my earlier post, your digestive system doesn’t do that well on foods that take a long time to digest like meat and heavy carbs because your body and internal organs are literally be compressed in the air.”

    Oy. What an idiot.

  42. grabulaon 17 Nov 2014 at 10:46 pm

    “…her tirade against Fig Newtons:”

    I hope she dies burning

  43. Charonon 18 Nov 2014 at 12:21 am

    On the insecticide note, for someone who does outdoors pursuits the idea of getting permethrin on you sounds really bad. I’ve never seen it sold as a topical insect repellent. If you buy permethrin at an outdoors shop, it will very likely say on the bottle “Avoid contact with skin and eyes”. It’s sold to treat clothing. I would be interested if you have any reference to it being sold for use on the skin as you claim – I just checked REI online and no, there it’s only sold for clothing treatment.

    Presumably it’s not really all that bad to get some on your skin, but still…

    As for eating carbs, it’s pretty common wilderness medicine lore that carbs are more easily digested at high altitude (which 7000′ is starting to reach). No, there’s no way this matters on a plane flight. Even a London-Sydney direct flight wouldn’t be long enough for that to matter, plus it’s not like you’re exercising up there… but this may explain how this tip got started.

  44. kamui04on 18 Nov 2014 at 3:13 am

    Patrick Smith from AskThePilot blog would tear her a new one if he was made aware of all the BS Food Babe spouted about air travel.

  45. Bruceon 19 Nov 2014 at 11:29 am

    Charon,

    Permethrin is commonly used for scabies and head lice:

    http://www.patient.co.uk/medicine/permethrin-cream

    Wikipedia is a good place to start if you are really wanting to know about it:

    http://en.wikipedia.org/wiki/Permethrin

    There is some discussion there on safety and links you can follow if it really bothers you.

  46. rainyday_89on 22 Nov 2014 at 5:39 pm

    Colorado medical student here. Nice article Steve! The FB exasperates me to no end.

    In regards to FB suggestion #5 (“Whole grain carbohydrates are better tolerated than proteins at a high altitude.”), there is actually some scientific basis for this statement. Eating carbohydrates increases a person’s repiratory exchange ratio (RER; ratio of CO2 elimination/O2 consumption). This indicates that carbohydrates (RER ~1.0) are more efficiently metabolized compared to proteins (RER 0.8-0.9). If able to acheive a RER of ~1, it would incease paO2 according to the alveolar gas equation.

    Alveolar gas equation:
    paO2 = FiO2 (Patm – pH2O) – (paCO2/RER)
    Without getting complicated by numbers, a higher RER will result in a lower paCO2 and an increased paO2.

    Honestly, I don’t think this really matters for the brief “high altitude” exposure at cabin pressure for most people. It is possible that people who struggle with ventilation such as those with morbid obesity, COPD, or pulmonary fibrosis would benefit from eating carbs in order to better compensate for the decreased Patm. It is also more relevant for climbing the mountains of CO. Let me know what you think.

  47. andapoon 30 Nov 2014 at 4:07 pm

    Permethrim is an Pyrethroid which have been proven to be pretty safe for use in Mosquitoes control, because of the low toxicity that they have on humans, differently with insects in which they are pretty active and effective in its control. Regarding their use in topical products here (http://www.medicinenet.com/permethrin-topical_cream/article.htm) it is a commercial product. and here http://www.nlm.nih.gov/medlineplus/druginfo/meds/a698037.html the NIH have a brief summary of its use for scabies control.

  48. mcjennjenon 30 Nov 2014 at 6:24 pm

    I had remembered being told for extremely long flights that walking around from time to time is good in some situations. I looked around and the only thing I could find was specific to those with circulations problems, diabetes and/or with a risk for deep vein thrombosis.

    Her “every 30 minutes” isn’t right.

    “…make sure you get up and walk around at least every two hours, and try not to sleep more than four hours at a time,” Dr. Alan Lumsden, chief of cardiovascular surgery at Houston Methodist Hospital’s heart and vascular center, said.

    http://consumer.healthday.com/circulatory-system-information-7/clots-health-news-731/lengthy-car-plane-rides-pose-risk-of-clots-says-expertting-682105.html

  49. Cappyon 01 Dec 2014 at 1:03 am

    “In reality, most jets are pressurized to between 6-8,000 ft, (Boeing says their cabins are pressurized to between 5,400-7,000 ft.) which is less than the pressure at ground level, but much higher than the outside pressure at typical cruising altitudes of 35,000 ft.”

    Sea Level, not ground level. If you depart from an airport with an elevation of say 8,000 feet, the cabin pressure in cruise could actually be greater than the pressure at “ground level” of the departure airport.

  50. rjwalkeron 01 Dec 2014 at 8:25 am

    >>ome and office humidity is usually around 30%, but can be lower when heating is being used.

    FWIW: Heating air does not dry it out – it simply changes cold dry air to warm dry air.

  51. HairyLarryon 05 Dec 2014 at 7:47 am

    Please add Food Renegade and Welness Mamma to your bullshit science-watch list:

    http://www.foodrenegade.com/category/decoding-labels-2/

    http://wellnessmama.com/category/natural-home/

    thx,

    L

  52. lycanthon 07 Apr 2015 at 12:46 pm

    I’m waiting for someone to discover the money trail regarding the FB. I’m sure there’s more than meets the eye. EVERYTHING is ALWAYS about the $$$

Trackback URI | Comments RSS

Leave a Reply

You must be logged in to post a comment.