http://foodnsport.com/blog/articles/cool-running.php
http://www.vegsource.com/talk/raw/messages/100031676.html

Interesting. Taken in the mouth, or axilla? Anyway, the difference in these 2 methods compared to the big difference 92-96°F between some lfrv and SAD is so small, that it is not important.

1. Cold hands
As these people have around 2°C lower the core temperature they surely have lower surface temperature. The sense everybody can notice. Either when touching him/her (for example the arm). Or even when just staying very close to the person - thanks to the infrared waves, and in this case the heat radiated from such a person is obviously lower than from any other object 2 degrees °C warmer, we can feel it with our naked skin, our palms or cheeks etc.

Let’s compare people living in the same climate - for example in the temperate zone like middle or east Europe, now in January with daily max. air temp -5° (23 °F), wearing similar clothing, normally staying or sleeping in the similar warm place, being comparably active, etc.:
What about the relationship between the core temperature and the surface temperature?
Why many of lfrv-s have their hands (and feet) colder than those on a standard diet? Now speaking about lfrvs with their core temperature being very similar to the average.
Why the absolute difference between their core and hand temperature is often so big?
Why do they often have their hand temperature more degrees lower below their core than in the case of those on a standard diet?

2. Fever, emergency
What is the limit, when we should start decreasing the body temperature of an ill person? Either by antipyretic chemicals (paracetamol, etc.), or with “cold pack”? 41°C (105,8°F)? 42°C (107,6°F)? What the Natural hygiene teaches?

Sounds like you might really enjoy interning at a fast and feast with Dr. Graham. You get a chance to ask these sorts of questions and more. You can do this sort of thing at any event with Dr. Graham, there's just more time for it at a fast, and this sort of subject matter is what is discussed at most dinner meals with the interns.

I don't think I can personally address all of your questions here, but I can say that I have not experienced the extreme difference of temperature between the core and hands or feet you are mentioning in relation to the 80/10/10 diet--not in myself or others. I have noticed that those who don't get regular exercise tend to have colder hands and feet than those who do, whatever diet they follow. People following the 80/10/10 lifestyle elements of diet and exercise have not had this issue that I recall ever seeing as the exercise helps regulate the body temperature (as well as hydration is sufficient) and also improves blood circulation not only while exercising but at all times (if exercise is done regularly). Circulation is improved primarily from aerobic sorts of things, but does occur from other exercise as far as I've seen (just to a smaller degree).

I personally used to have trouble with cold hands and feet a lot before I did 80/10/10, including when I did raw vegan with too much fat, spices and such. I only have cold hands and feet now when they've been exposed to colder temperatures than the rest of my body, and that's only a temporary thing. If I warm them, they stay warm (until exposed to the cold again), whereas before 80/10/10 they would stay cold and not warm well in those conditions.

If you attend a FoodnSport event you'd also get the chance to take the temperature readings for yourself as I don't know if the exact temperature readings in the exact situations you've mentioned have been recorded.

_________________
Aloha!

-Janie

I have been diagnosed with Raynaud's disease, or Raynaud's Phenomenon. My fingers turn white and numb and sometimes dark blue/black. It is a disorder that can result in amputation. I don't care about the diagnosis, but hope the LFRV lifestyle will help. I am often cold and sometimes flushed. You give me hope, Janie! Thanks

LynnCS: Yes, that's the name of what I used to have, but no longer have. I had a mild case of it I suppose as they didn't think it was dangerous in that way. I remember the doc made a point of telling me that it wasn't a problem and not to worry about it. The cutting off of circulation wouldn't last very long, but then again I'd try to warm up my hands quickly when it happened 'cause it was freaky, so that may have helped too. Some of my fingers would get a distinct line of color difference at some point on it and the rest of that finger to the end would be white and the part toward my hand would be normal. The white part would be numb ... until they warmed up enough and it stopped, at which point the white would turn bright red and get really hot then gradually the line and color distinction would disappear. I never had the whiteness go on for so long that it turned dark blue/black though.

I supposed that it related to my autoimmune condition (antiphospholipid antibody syndrome) that can cause thrombosis (clots). I no longer have the symptoms of that autoimmune thing either. I had a moderate case of it according to the blood tests. I haven't had the blood tests retaken since the symptoms went away so don't know if I'd be considered to have it still or not.

Either way I think there is hope for your condition at least improving to the point where it's not so dangerous, based on my experience, yes.

_________________
Aloha!

-Janie

I've been told bu someone who is quite experienced with Natural Hygiene (although she does not practice 100% raw foodism) that a sensation of cold (chilling sensation) and cold extremities (hands, feet) was due to toxemia. Hence a fast would help one get rid of them. i'll try that when I can get someone to supervise my fast (i don't want to fast on my own, Dr Graham doesn't recommand it either).

Also, there's this notion floating around that some fruit (the acidic ones especially) would accentuate the sensation of cold and possibly lower our body temperature.

This matches the traditional chinese medicine notion that fruits lower our temperature (as opposed to foods that make our body temperature rise, like cereals, flesh, oil and spice for instance.

I've searched info about thermogenesis and the effect of different foods on our body temperature.

I've also noticed that i experience less chill / cold extremities when i run regularly (as opposed to the periods when i just work at my laptop all day long... This even happens during summer time...

Could it be the case that a diet high in acidic fruit requires regular exercise whereas other kinds of vegan diets do not create this chilling efect, and thus do not require regular exercise to stay warm?

Hi Alex!
If you're planning on attending a supervised fast, then check out the Fasting event at Sedro Woolley in September at http://foodnsport.com/events/Fasting-and-Feasting-Fortnight-SW-2012.php

If you're wanting to do a longer one you should definitely check out the one in Costa Rica:
http://www.foodnsport.com/events/fasting.php

I interned there this year and the experience has been fantastic and I'm planning on fasting there soon!!

Body temperature can be highly variable. As Dr. G mentions, it is common for people new to 811 to have a low temp (due to a low caloric intake and drop in metabolic rate). I have recently been looking into cold adaptation. You can train for this. If you notice, folks who are cold adapted (ala Wim Hoff) can maintain a normal core body temp while their skin temp drops to 50-40 degrees F. Michale Phelps and Lance Armstrong have used cold adaptation to elevate athletic performance.
http://youtu.be/L9Cgaa8U4eY
Granted, Raynauds disease introduces other circulatory issues.