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  #1441  
Old 06.04.2013, 18:06
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Re: Ask a Scientist

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It's ok.

I have a question.

Is the number of religious people increasing or decreasing?
Depends on your definition of "religious" & the geographic area?
For example, the number of Christians seems to be declining whereas the number of Muslims is growing.
Do you include in religious people those people who have not attended a religous service in the last week, last month, last year......
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  #1442  
Old 06.04.2013, 18:18
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Re: Ask a Scientist

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Is the number of religious people increasing or decreasing?
Is the number of questions relevant to this thread increasing or decreasing?
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  #1443  
Old 06.04.2013, 18:30
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Re: Ask a Scientist

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Depends on your definition of "religious" & the geographic area?
For example, the number of Christians seems to be declining whereas the number of Muslims is growing.
Do you include in religious people those people who have not attended a religous service in the last week, last month, last year......
Nope, just those who consider themselves believers.. Back home they ask if one is a believer, or without faith, when they do a headcount of population. I was wondering if there is data, and who would provide it, churches? Govs? Attending a service says nothin.
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Is the number of questions relevant to this thread increasing or decreasing?
Increasing. Sure beans.
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  #1444  
Old 10.04.2013, 13:57
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Re: Ask a Scientist

Here’s some random food-related questions…

1. I’ve noticed sometimes that if I eat starch in an evening meal (eg in pasta or pizza or potatoes), then in the early morning I will wake up absolutely radiating heat. It will sort itself out after an hour or so, but in the meantime it seems like I’m boiling. Is there a term for the physiological process that causes this? My theory is that the starch is being metabolised or burnt, and that is causing a small rise in body temperature. If this was the case then it would occur in most if not all people, and there would be a medical term for it…

2. Is it possible to have a hangover from eating particularly spicy food? I realise that a hangover is due to the various tannins and metabolised toxins that were in the alcohol. However if someone eats something particularly rich/spicy then won’t similar chemicals be in the bloodstream?

3. Are there any foods that require more energy to digest than the energy content of the food itself? I’ve heard stories about eg celery containing little energy, and that you lose weight by eating it. Is there any truth in that? Then again, I’ve also heard that a B*rger King Whopper with cheese contains more energy than a hand grenade…
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  #1445  
Old 10.04.2013, 14:25
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Re: Ask a Scientist

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Here’s some random food-related questions…


3. Are there any foods that require more energy to digest than the energy content of the food itself? I’ve heard stories about eg celery containing little energy, and that you lose weight by eating it. Is there any truth in that? Then again, I’ve also heard that a B*rger King Whopper with cheese contains more energy than a hand grenade…
The celery is true, I believe (without checking anything) that eating a whole stick of celery will give you just 10 Kcal or even less. The issue with celery is that it is full of calories, but our bodies cannot process the cellulose. It takes more than then 10 calories to digest the food thus, by eating only celery you would end up losing a absolutely negligible amount of weight. (And if it's all you ate you'd probably die too.)

Last edited by kngavl; 10.04.2013 at 15:54. Reason: calories - kcal
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  #1446  
Old 10.04.2013, 14:48
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Re: Ask a Scientist

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3. Are there any foods that require more energy to digest than the energy content of the food itself? I’ve heard stories about eg celery
I've heard such stories about cucumber and watermelon. Probably just because of the water content.
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  #1447  
Old 10.04.2013, 15:10
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Re: Ask a Scientist

I read an article reacently on a science based website that this is actually a myth, there is no food that can give negative calories in reality. I'll see if I can find the article & link it.

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The celery is true, I believe (without checking anything) that eating a whole stick of celery will give you just 10 calories or even less. The issue with celery is that it is full of calories, but our bodies cannot process the cellulose. It takes more than then 10 calories to digest the food thus, by eating only celery you would end up losing a absolutely negligible amount of weight. (And if it's all you ate you'd probably die too.)
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  #1448  
Old 10.04.2013, 15:15
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Re: Ask a Scientist

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2. Is it possible to have a hangover from eating particularly spicy food? I realise that a hangover is due to the various tannins and metabolised toxins that were in the alcohol. However if someone eats something particularly rich/spicy then won’t similar chemicals be in the bloodstream?

The main cause of a hangover is dehydration. There are other mitigating factors, but dehydration is the main culprit.
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  #1449  
Old 10.04.2013, 15:21
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Related to the question above. If I drank a litre if ice cold water, I'd use energy to bring it up to body temperature (I guess about 35 kJ or so?). Can you lose weight by drinking cold drinks instead of hit?
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  #1450  
Old 10.04.2013, 15:28
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Re: Ask a Scientist

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Related to the question above. If I drank a litre if ice cold water, I'd use energy to bring it up to body temperature (I guess about 35 kJ or so?). Can you lose weight by drinking cold drinks instead of hit?
That's about 8 kcal, so probably not. You'd die of water poisoning first.
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  #1451  
Old 10.04.2013, 15:44
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Re: Ask a Scientist

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1. I’ve noticed sometimes that if I eat starch in an evening meal (eg in pasta or pizza or potatoes), then in the early morning I will wake up absolutely radiating heat. It will sort itself out after an hour or so, but in the meantime it seems like I’m boiling. Is there a term for the physiological process that causes this? My theory is that the starch is being metabolised or burnt, and that is causing a small rise in body temperature. If this was the case then it would occur in most if not all people, and there would be a medical term for it…
My personal theory is that if you are waking up with an abnormally high temperature, the problem is most likely not food related.

I would see a doctor to rule out any pathological problems first.

Generally (and obviously varies by gender and age etc.) you will burn around 2,000 calories a day without doing any exercise (inclusive of sleep).
When you run for an hour at a steady pace you will know how hot and exhausted you can feel (level of fitness dependant) but you will burn between 600 - 800 calories.

If you are waking up already heated up your body must be protecting itself somehow - similar to how your body develops a fever when you have the flu.

The bodies normal response to sleep is to store energy, not burn it..... get it checked out.

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2. Is it possible to have a hangover from eating particularly spicy food? I realise that a hangover is due to the various tannins and metabolised toxins that were in the alcohol. However if someone eats something particularly rich/spicy then won’t similar chemicals be in the bloodstream?
Are you sure it wasn't the quality of the ingredients?

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3. Are there any foods that require more energy to digest than the energy content of the food itself? I’ve heard stories about eg celery containing little energy, and that you lose weight by eating it. Is there any truth in that? Then again, I’ve also heard that a B*rger King Whopper with cheese contains more energy than a hand grenade…
I don't know the list of foods by heart, but for sure the following two are:
Cauliflower
Iceburg Lettuce

Both offer little in the way of nutrition, but fibre is always an important aspect of any diet.

With Cauliflower, it is part of the Brasicae family (Broccoli etc.) which has proven to be an important food group to protect against cancer so don't rule out it's health benefits just because there is no aparent nutritional benefit.

People tend to forget that food groups for losing weight are not equally grouped to their health benefit.

A balanced diet is always the key.



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The celery is true, I believe (without checking anything) that eating a whole stick of celery will give you just 10 calories or even less. The issue with celery is that it is full of calories, but our bodies cannot process the cellulose. It takes more than then 10 calories to digest the food thus, by eating only celery you would end up losing a absolutely negligible amount of weight. (And if it's all you ate you'd probably die too.)
Again, low calorie count yes, but another great example where it's nutritional benefits are underestimated.

Celery and Parsley are two foods that are high in a chemical called "Tryptophan". An amino acid that the body needs as a pre-cursor chemical to "Serotonin" production in the brain....... which basically regulates how 'Happy' you feel.


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I've heard such stories about cucumber and watermelon. Probably just because of the water content.
Cucumber maybe,

Watermelons on the other hand are full of sugar (carbohydrates) so there maybe a limited nutritional value, but there is enough energy in them to keep you going.

Fruit sugar though is usually 'Fructose' which is arranged differently to 'Glucose' (the form of sugar required for the blood) so it first needs to be processed in the liver. Glucose can pass straight into the bloodstream from the digestive track.

........ but I won't bang on about sugar. Here read this, it's very intersting

Last edited by TidakApa; 10.04.2013 at 16:42. Reason: The celery call seems to be bullshit. Tryptophan is true, but there are far better foods to eat to source this.
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  #1452  
Old 10.04.2013, 16:07
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Re: Ask a Scientist

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I've heard such stories about cucumber and watermelon. Probably just because of the water content.
.149 kcal/g in cucumber
.158 kcal/g in celery
.298 kcal/g in watermelon

.521 kcal/g in apple
.67 kcal/g in grapes

Source: http://caloriecount.about.com/

The reason for the "negative calories" is because when you eat food you end up spending energy to digest it. This energy is very small as far, although some places say it accounts for 10% of your daily caloric expenditure so 200-160 calories. (no source: too lazy to check that number though)

We do know that chewing gum burns some 10 calories an hour. So if you were to chew your celery for about an hour you'd definitely be in the clear. Source
It's also important to note that not all calories will be taken up by the body.

In conclusion, after consulting my scientific article databases, I can not find any articles that tests the validity of the claim that celery is a negative calorie food. However based on what I've looked into so far, and without further studies, I'm still leaning more on the side that you gain nothing by eating it.

I concede.

Last edited by kngavl; 10.04.2013 at 16:29. Reason: Because I now yield
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  #1453  
Old 10.04.2013, 16:16
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Re: Ask a Scientist

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I read an article reacently on a science based website that this is actually a myth, there is no food that can give negative calories in reality. I'll see if I can find the article & link it.
Ahhh !!!

This is why I love this thread

Yes, it doesn't take much research, and even Wiki supports your claim. References at the end for further reading.

I double checked the calories in Caulifower - 24 calories in 100g (boiled, nothing added)

Iceburg Lettuce is 13 calories (54% carbohydrate) per 100g...... so that's got to be a pretty borderline useless food.
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  #1454  
Old 11.04.2013, 03:18
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Re: Ask a Scientist

Does iceberg lettuce actually at least provide fiber? If so, then not so useless.. Juicy greens are fun.

I think the overheating after some foods could also be some kind of allergy reaction, or quirky metabolism thing. I know after some foods I get super hot, with sudden nose running, sometimes get migraine next day. Not a hangover, but weird enough. It might be dehydration, I wonder, or spices, fermentation..
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  #1455  
Old 11.04.2013, 23:09
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Re: Ask a Scientist

From where those little fruit flies (drosophila) are coming from, if I leave strawberries on the table? How do they get into my (probably almost hermetically) closed apartment?

And how they multiply so fast? In a few hours there would be hundreds of them.
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  #1456  
Old 11.04.2013, 23:30
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Re: Ask a Scientist

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From where those little fruit flies (drosophila) are coming from, if I leave strawberries on the table? How do they get into my (probably almost hermetically) closed apartment?

And how they multiply so fast? In a few hours there would be hundreds of them.
Do you have plants at home, moist plant pots? I'd disinfect the drains every now and then. How about wet pet food?
How often do you bring fruit home? I'd say you bring fruits with eggs in them..I keep fruit only in the fridge, never anything outside, coz even when you eat the fruit, they might be camping somewhere else just to get out when you bring something new home. Fruit does taste better room temperature but the flies are annoying.
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  #1457  
Old 11.04.2013, 23:33
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Re: Ask a Scientist

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From where those little fruit flies (drosophila) are coming from, if I leave strawberries on the table? How do they get into my (probably almost hermetically) closed apartment?

And how they multiply so fast? In a few hours there would be hundreds of them.
1) they are small and there are likely cracks and crevaces that you don't know about
2) each fly lays about 400 eggs
3) the incubation period is about 5-7 days (temp dependant)

If you don't get on top of them at the first chance, you'll have them for company the whole summer...
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  #1458  
Old 12.04.2013, 04:46
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Re: Ask a Scientist

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Does iceberg lettuce actually at least provide fiber? If so, then not so useless.. Juicy greens are fun.
According to Self Nutrition data, 100g of iceberg lettuce (which is a lot to eat at one sitting) has a measly 1 g of fiber. It only has 14 kcal, so I suppose if you want super low-cal and soon to be super hungry that would do. Flavor-wise, nah.

On another note, if you do manage to down the 100g for whatever reason, Self claims you'd get 10% of your daily requirement of Vitamin A. I didn't know that.

Just in case you were wondering...100g of cauliflower gives 23 kcal and 2 g of fiber, and the same amount of cucumber gives you a whopping 12-15 kcal depending on whether you leave the skin on or not. Oddly enough, Self claims cucumber gives you a gram of fiber if you peel it, but no fiber if you don't.
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  #1459  
Old 29.05.2013, 21:20
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Re: Ask a Scientist

Can someone tell me the name of typical nice looking trees, around the lakes here. Most typical, around Rapperswill lakeside . In English or German.
Thanx
for instance:
http://www.shutterstock.com/pic-1282...qxuQ7SdjA-1-19
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  #1460  
Old 29.05.2013, 21:25
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Re: Ask a Scientist

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Can someone tell me the name of typical nice looking trees, around the lakes here. Most typical, around Rapperswill lakeside . In English or German.
Thanx
for instance:
http://www.shutterstock.com/pic-1282...qxuQ7SdjA-1-19
They're plane trees in English.
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