Questions tagged [digestion]

the process of breaking down food by mechanical and enzymatic action in the alimentary canal into substances that can be used by the body.

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16
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1answer
81k views

How much food is necessary to buffer the stomach when taking medicine?

Very often, doctors or pharmacists will advise patients to take certain pills with food to "act as a buffer" so the patient is less likely to get a stomach ache from taking the pill. How much food is ...
12
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1answer
1k views

What is the mechanism of eczema?

I'm trying to link the signs and symptoms of eczema (especially atopic dermatitis) to its causes. In short, what is the mechanism of the disease? In an answer of another question about eczema, @...
11
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1answer
27k views

How does the stomach handle liquid vs solid food?

I've read the the stomach must secrete HCl and pepsin to break down food. If I have an empty stomach, then drink a large amount of liquid, I wonder if the liquid passes quickly, or gets processed in ...
10
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1answer
416 views

Can Helicobacter pylori affect the body outside of the digestive system?

I had a discussion with a friend who's going through some medical issues as of lately. She underwent a few tests and met a few doctors which inquired about her medical history. She has frequent ...
9
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2answers
5k views

Long term use of stomach acid reducers: Omeprazole or Ranitidine?

I find omeprazole (Prilosec, Losec) and ranitidine (Zantac) work about equally well for stomach acid reduction. For long term daily use, which is safer?
9
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1answer
4k views

How long should you wait after lunch if you want to take a bath, and why?

Is it true that one shouldn't take a bath after lunch? If so, does it depend on how heavy the lunch is? whether one is taking a bath or a shower or bathing in a river? how warm or cold the water ...
9
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1answer
182 views

Can the body be shocked into a faster metabolism?

It seems to be a relatively well-known fact that sudden extended periods of caloric restriction will cause a severe drop in metabolism. But I can't seem to find much research about the reverse process....
9
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2answers
2k views

When, if ever, should one use a laxative?

I'm in my mid-twenties and have never taken a laxative or used prune juice. I've experienced constipation and general discomfort before, but it never occurred to me that a laxative would be useful and ...
8
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1answer
144 views

Digestion and absorption of large scale protein structures

In school we learned that all ingested proteins are digested via denaturation and breaking up the larger macro-structure into peptides and amino-acids so small that they can be absorbed and which are ...
8
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1answer
351 views

What is the mechanism of heartburn?

My father recently forwarded me a factoid saying: most of us believe that heartburn is caused by excess production of gastric acid. In fact, in most cases it is caused by improper functioning of ...
8
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1answer
757 views

How long does it take to convert food into fat?

If I eat a very large meal, how long does my body take to convert the excess calories into fat?
8
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0answers
106 views

What is proper time for drinking water with meal? [duplicate]

I've gone through many articles on Google. One says it's good to drink water after meal as it aids digestion while others say never drink water after a meal because it will dilute the acids (i.e. HCl)...
7
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2answers
194 views

How to increase my gut bacteria? Are there any drugs available?

I got this problem in my digestive system that foods that I eat don't digest properly. I searched the internet and found out that a lack of gut bacteria can cause that kind of problem. How can gut ...
7
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1answer
143 views

When is a stomach “empty” for the purpose of taking medication?

Some medication (certain antibiotics, thyroxine, PPIs) need to be taken on an "empty stomach". For most patients, that just means they take them after sleeping. However, certain circumstances can lead ...
7
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2answers
762 views

Do protein bars/shakes provide nutrients that your body can use?

To my understanding, a lot of people consider protein bars/shakes unhealthy. They are processed, often sugary, and contain chemicals that are probably used to create gym mats. I eat protein bars ...
7
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1answer
91 views

Foods/Drinks to avoid before and during a flight

I am a (recent) frequent flyer with at least 4 transatlantic trips/month. I have noticed that depending on the food I take just before or during the flight, this can have significant consequences on ...
6
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1answer
359 views

Is stomach acid an emulsion?

It occurred to me that oils float on water, and the stomach is always full of aqueous solution. The stomach empties at the bottom, meaning that oils would only ever pass out of the stomach when it is ...
6
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1answer
2k views

Eating egg shells: advantages v.s. disadvantages?

I am an engineer and a scientist, but not in the field of medicine or health. Partial answers/comments are welcome. Some of my family members start eating egg shells for the sake of obtaining ...
5
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2answers
160 views

What are the causes of Chronic Diarrhea?

What are the main causes for chronic diarrhea and frequent mouth ulcers when the following is true: Patient's hormones are normal Patient's endoscopy and colonoscopy are normal Patient does not have ...
5
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1answer
66 views

Dietary Interactions that cause Constipation

I have been wondering, what are known dietary causes for constipation? Is there a reason that combining Rice and Meat in a meal would cause constipation? Is there some gut reaction that is causing ...
5
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1answer
104 views

Does IBS (irritable bowel syndrome) lower the risk of cancer?

There has been an interesting study which says that smelling farts helps decrease the risk of cancer. Basically the study says: hydrogen sulfide — a.k.a. what your body produces as bacteria breaks ...
5
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1answer
98 views

Supplements: When and how to take them to maximize absorption

I switched to a vegetarian diet a while back, and I am now taking a few supplements consisting of common minerals, vitamins and omega-3's as a compliment to my regular diet. When should I take the ...
5
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2answers
79 views

How to ingest vitamin C for patients after a gastric surgery?

Vitamin C is an essential nutrient and a powerful antioxidant. While many sorts of fresh fruit and vegetables are a great source of this vitamin, it is sensitive to heat and might decompose during ...
5
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1answer
118 views

Acidity of gut contents

How does the pH of the contents of the gut vary from the stomach to the anus? I know that chyme is very acidic, but after that?
5
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2answers
164 views

How to sterilize the human intestine using a safe method?

I want to know how can one sterilize their intestine (both small/large) and what are the consequences.
5
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1answer
98 views

Effects of eating rice at dinner time

I have heard the claim that eating rice during dinner is not good for ones health. Is this true? What is the impact of eating rice in night?
5
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1answer
660 views

Walking immediately after the meal

I find different views for this topic. First view, It is not a good idea to walk immediately after a meal as your stomach requires energy to digest the food and so you should not be using your ...
5
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4answers
1k views

What should I eat before going to bed so that I don't wake up of being hungry?

What should I eat before going to bed so that I don't wake up of being hungry? Protein? Low GI carbs? Fat? How much? Which of these will stay in my stomach for 9 hours during the night? I am on ...
5
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1answer
6k views

Why does exercise relief stomach pain/bloating

I have chronic stomach discomfort especially after eating. Why does even little exercise relief my stomach discomfort? I also suffer from IBS, does this mean that the gas inside the stomach goes away ...
5
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1answer
381 views

Digesting liquid food vs solid food equivalent

I am curious to find out what happens during the digestion of solid food or liquid food compared with each other. For example, what takes longer to digest and what takes longer before feeling hungry ...
5
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1answer
8k views

What happens when you swallow larger chunks of food?

We're advised to chew our food many times before swallowing which breaks the food down into small chunks before we swallow and send it off down to our stomachs. What happens if we were to swallow ...
5
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0answers
98 views

Effect of water consumption on rate of digestion

I drink a lot of water, a maximum of 0.5 liter per hour. Does this change the rate of digestion and are there any side effects for this kind of habit?
5
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0answers
107 views

Do proton pump inhibitors (PPI's) shut down all the proton pumps in all cells across our body system?

It's known that proton pumps exist in all cells in our bodies and help us to get rid of damaged proteins (present a disposal system). PPIs (omeprazole, pantoprazole, esomeprazole, lansoprazole and ...
5
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0answers
56 views

How does water intake with meals influence digestion? [duplicate]

I am trying to figure out how water intake during meals effects digestion. Particularly, what volumes of water would inhibit digestion versus benefit digestion. Additionally, if water benefits the ...
4
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1answer
71 views

Can adults get new gut bacteria from external exposure?

I am not a student nor professional in medicine or physiology. I understand that newborns get their gut bacteria during childbirth from the contact with the mother (I am going to assume this happens ...
4
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1answer
95 views

Do artificial sweeteners increase risk of diabetes or hyperinsulinemia?

Does the consumption of artificial sweeteners as a replacement for sugar increase the risk of diabetes or hyperinsulinemia? Have there been any clinical trials studying this?
4
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2answers
253 views

Why exactly does acid reflux or GERD cause chest pain? [closed]

After 3 years of acid reflux I started to get chronic chest pain from it. Every-time I feel some acid in my esophagus the chest pain comes in very quickly. Why am I not just feeling the burning ...
4
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1answer
2k views

Do the antimicrobial properties of honey counteract the probiotic properties of yogurt?

The question is summed up in the title. In the quest for impeccable gut flora, this concern popped up. EDIT: Some additional information regarding the antibacterial properties of honey and the ...
4
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1answer
421 views

Does walking after eating really help with gas and constipation?

Does it really make any difference? If yes, then by what mechanism? I pass gas frequently and have hard stools. I've read that walking helps with both these problems. For example, on the Mayo Clinic ...
4
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0answers
35 views

What level of alcohol is dangerous for children

I've come across a number of food products that have some alcohol ranging from .04% to 2% they often don't have warnings and you only find by going through the ingredients. Some examples deserts ...
4
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0answers
16 views

Is dairy sensitivity in infants related to quantity?

We have a 9-month-old who has been sensitive to cow's milk in mom's diet for much of her life. Mom stopped consuming dairy around 2 months, and we've tried reintroducing it a couple times with poor ...
4
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0answers
146 views

How long does someone with acid reflux who's just eaten have to wait before drinking water?

A friend recently told me that GERD patients (acid reflux) should not drink water with meals. I found an article that explains the reasoning. Basically, water dilutes the stomach acid required for ...
4
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2answers
894 views

Why does my girlfriend have such smaller stools when we eat the same food?

My girlfriend and I have a fairly well-rounded diet. We eat a lot of vegetables, beans, and grains, some dairy and a moderate amount of meat (maybe one serving per day). I would assume our diet to be ...
3
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1answer
210 views

Is fibre an essential nutrient?

Inuits' diet consists almost entirely of meat. As per my understanding, meat does not provide us with fibre and fibre is obtained from plant products only. Do the Inuits suffer from any malnutrition ...
3
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1answer
75 views

does eating beans cold modifies their nutritional profile?

I read here that if we prepare dried beans this way: soak overnight. boil. put them in the refrigerator. eat them cold. They would be digested in the intestines rather than in the stomach, acting as ...
3
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1answer
225 views

How does gallbladder removal affects fat digestion?

If I understand correctly, the sole purpose of the gallbladder is to store extra bile that is opportunely released in order to properly digest fat. When the gallbladder is removed, what happens when ...
3
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1answer
18k views

How do extended release tablets work?

I know these tablets are especially formulated and coated to dissolve over a certain period of time. I also notice that all I've seen, quite a lot, are too large to pass through the Pylorus. Do they ...
3
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1answer
98 views

How do probiotics work?

What are the bacteria in your large intestine doing that benefits health/immunity? I first heard about these bacteria in a health food store about 20 years ago. This was before people started using ...
3
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1answer
245 views

Neutralize bile in stomach

In acid reflux disease, patients are advised to eat foods that can neutralize acid in their stomach to keep the acid level in stomach low enough, for example just a small cake can efficiently reduce ...
3
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1answer
1k views

Why antacid for overeating?

I saw on this popular website (http://www.livestrong.com/article/345573-how-to-relieve-the-feeling-of-overeating/) and other sites as well, a recommendation to take an antacid for overeating. But isn'...