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Questions tagged [metabolism]

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What limits the VO2 (rate of oxygen consumption) in individuals?

I am quite confused regarding what limits the VO2 max, options are (1) number of mitochondria or (2) the ability of the cardiovascular system to deliver oxygen to tissues. I believe it should be the # ...
helplessstudent147's user avatar
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0 answers
26 views

Is fat burned even at caloric maintanance?

I have searched up that it looks like for the bodies daily needs of energy it uses a combination of energy sources even stored body fat (Substrate utilization at Rest). But these sites are complicated ...
Golden Boy's user avatar
3 votes
1 answer
64 views

How much glucose intake will trigger the polyol pathway?

Searching online I see numerous studies and references that say that excess glucose in the body will trigger the polyol pathway which converts glucose to fructose. Example link. How much of a ...
Plasty Grove's user avatar
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1 answer
80 views

How does ethanol get metabolised into 'metabolic energy'?

Having read the question Is drinking alcohol a form of energy intake?, an answer cites the European Journal of Clinical Nutrition which claims Alcohol has a 'metabolic energy' (ie energy that gets ...
user2979044's user avatar
1 vote
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2k views

How many calories can the average human absorb in one day?

While researching the maximum amount of weight a person can safely lose per week, I came across an interesting factoid that basically stated that the maximum fat reserves that can be processed per day ...
stix's user avatar
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4 votes
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81 views

Since fat is turned into water and CO2, would a person with more fat deposits survive longer without drinking?

Based on https://www.bmj.com/content/349/bmj.g7257, far in our bodies is turned into water and CO2. Would this mean that a person with more adipose tissue can survive longer without water? https://en....
John's user avatar
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2 votes
0 answers
36 views

Definition of metabolic syndrome, metabolic diseases, and metabolic disorders

I found that these terms are frequently used interchangeably, especially when browsing the internet. However, I wonder if there is any (subtle) difference between them. My current understanding is: ...
William Wong's user avatar
1 vote
0 answers
61 views

Accesible way to measure metabolism

I'm aware that metabolism can be measured in multiple ways, using both direct and indirect calorimetry. It can also be approximated using a combination of bodyweight and other measures, like with the ...
gabriel's user avatar
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1 vote
0 answers
50 views

How would I calculate the heat produced by a child?

Odd question I know, but I'm looking into stroller covers and I was thinking about how to simulate the heat a child would generate inside one (ignore outside sources like solar loading for the moment)....
confused's user avatar
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1 vote
1 answer
199 views

Is Glucose-6-phosphatase absent in all the 3 types of muscular tissues?

While going through gluconeogenesis I came to know about Glucose-6-phosphatase. In my book it's stated that Glucose-6-phosphatase is mostly present in liver and kidney and is absent in muscles, brain ...
Nirjhar Roy Majumder's user avatar
2 votes
1 answer
64 views

Meaning of "lower limit of normal + 20% over basal value" in a description of a blood lactate analysis (after glucose load)

From "Alpers- and MNGIE-like disease with disturbed CSF folate transport and an unusual mode of genetic transmission of POLG mutations: a case report": Basal serum lactate was normal (1.1–1....
CowperKettle's user avatar
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1 answer
636 views

Is high metabolism a problem?

I got a scale that takes a lot of measurements through bioimpedance. It has an accompanying app called OKOK.international, and when you upload your height, age, and gender on their app, it shows what'...
João Areias's user avatar
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0 answers
11 views

What exactly is the effect of Terminalia Arjuna in Hepatic Lipid Peroxidation?

This artice says that Terminalia Arjuna (TA) increases hepatic lipid peroxidation (LPO) administration of arjuna resulted in reduction of thyroid hormone concentration in euthyroid animals, whereas ...
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Meaning of "Routine" in "Routine imaging of the brain is not required to diagnose BH4Ds"

From Consensus guideline for the diagnosis and treatment of tetrahydrobiopterin (BH4) deficiencies Recommendation #27 (conditional): Routine imaging of the brain is not required to diagnose BH4Ds. ...
CowperKettle's user avatar
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1 vote
1 answer
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Meaning of "natural" in "high natural protein intake" in a consensus guideline on BH4 deficiencies

From the Consensus guideline for the diagnosis and treatment of tetrahydrobiopterin (BH4) deficiencies: Apart from BH4Ds, the differential diagnosis of HPA includes phenylalanine hydroxylase (PAH) ...
CowperKettle's user avatar
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1 vote
0 answers
23 views

Why is there a difference between venous bicarbonate and bicarbonate in ABG?

Lets say a serum blood test shows bicarbonate of 20mmol/l but an ABG of 15mmol/l, both tests taken 3 minutes apart in a person with acute metabolic acidosis with compensation. Can anyone explain why ...
Kaktus12345's user avatar
1 vote
0 answers
53 views

Dose of folinic acid/5MTHF equivalent to 400 mcg folic acid?

We know that the recommended daily dose of folic acid is 400 mcg/day. What would be the equivalent daily doses of folinic acid and of 5MTHF, if a person would decide to substitute folic acid with them?...
CowperKettle's user avatar
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4 votes
1 answer
651 views

How to reduce half-life of caffeine?

Caffeine has a typical half-life of 5–6 hours, but some of us take much longer to metabolize it (1 cup of coffee at breakfast can leave me sleepless that night). I know I can cut the caffeine's half-...
Ray Butterworth's user avatar
0 votes
2 answers
79 views

Why does adenosine processing require unconsciousness?

I've heard that one of the purposes of sleep is to process adenosine that builds up from metabolic processes, and it makes sense that the effect of adenosine as a neurotransmitter is to produce ...
ak0000's user avatar
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3 votes
1 answer
90 views

What is aminorachia?

From Folinic acid responsive seizures: a new syndrome? (1995): This infant girl seized within 6h of birth. Seizures were ameliorated with high-dose multiple anticonvulsant therapy. CT scan, urine ...
CowperKettle's user avatar
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3 votes
1 answer
311 views

What is the specific mechanism for ketoacidosis in Diabetes Mellitus?

What is the specific mechanism for ketoacidosis in Diabetes Mellitus? As far as I have understood it goes something like this:: Diabetes Mellitus --> Decreased glucose uptake by cells of the ...
abacus143's user avatar
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3 votes
1 answer
706 views

Linkage between Fatty Acid Metabolism and Ketone body metabolism

I am studying biochemistry right now and I am having a little trouble as to understanding ketone body metabolism. I have understood the steps and all but just cannot seem to link it with Fatty Acid ...
abacus143's user avatar
  • 453
1 vote
0 answers
49 views

Do people with higher metabolism walk faster?

I once came across a claim that people naturally walk at a speed that results in the least energy expenditure per distance travelled. Walking too slow would result in burning more energy for basic ...
Nic's user avatar
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1 vote
0 answers
34 views

How to calculate Metabolic Age statistically by using formula(without using weighing machine or any online calculators)?

How are we supposed to calculate our metabolic age if we have results of a person that includes: age gender weight height BMI and BMR? I have researched a lot but I am not able to find the formula ...
Hardik Sisodia's user avatar
2 votes
1 answer
386 views

Chlorophyll supplements: metabolism of chlorophyll in the human body and proof for resulting health benefits?

I see people buy and consume powders that they claim consists of chlorophyll, calling it „lichtkraft“ in german, meaning „the power of light”. They are expecting health benefits from consuming it. ...
haemse's user avatar
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1 vote
0 answers
30 views

Meaning of "over-utilisation/degradation defects such as L-dopa methylation and neurodegeneration"

In Cerebral folate deficiency: Analytical tests and differential diagnosis, I came across a tough phrase: Neurological disease was first linked to folate deficiency by Pincus and co-workers in ...
CowperKettle's user avatar
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1 vote
1 answer
55 views

Are Drug toxicity, Infectious toxic disease, Hypoxia & Malignancy all Acquired Metabolic Diseases?

Commonly when we talk about Acquired metabolic diseases, we refer to endocrine diseases (like Diabetic ketoacidosis, HONK, etc), electrolyte abnormalities (hyperkalemia, hyponatremia, etc), acid-base ...
CuriousMind's user avatar
3 votes
1 answer
124 views

Are vitamin C and desloratadine better absorbed when taken shortly after eating?

I'm taking vitamin C supplements and desloratadine for my allergies. I've heard some people saying that it's better to take your medicines right after eating because your body absorbs them better ...
Hinko Pih Pih's user avatar
1 vote
0 answers
39 views

Is it good/advisable to increase metabolism and subsequently the temperature of the body through the consumption of selected food items during fever

Prior knowledge I have: Body heats up when there is higher than normal metabolism. During a fever the body increases metabolism and there by the body temp to fight Certain food items increase body ...
Samarth S's user avatar
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3 votes
1 answer
65 views

Can metabolism raising help us become thinner?

I saw a article about the metabolism in Chinese. It said that metabolism = 65% basal metabolic rate + 10% thermic effect of food + 25% daily activities, so I can write the math formula, X=65% X+10% ...
electronic component's user avatar
5 votes
1 answer
186 views

Is there evidence that humans should fast intermittently daily for 16 hours because it is healthy in general? [closed]

There is a big fasting boom on the internet, but it is hard to sift through the claims of fitness and health bloggers and the real evidence. I have spent hours reading studies on fasting - it is ...
Fipah's user avatar
  • 71
3 votes
3 answers
150 views

Why are some people always warm/hot to touch even with normal core temp?

I have met a few people like me who are always warm to touch even in the winters. With people sitting close often inquiring if I have a fever. Why is that? and Is it normal?
drone991's user avatar
2 votes
0 answers
52 views

Does it matter for metabolism at what time of day we eat?

In many popular media that discuss fat loss and dieting, a common idea is that eating at the "wrong" time of the day, say a meal at dinner time, is supposedly better from a weight loss perspective ...
G. Bach's user avatar
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9 votes
1 answer
204 views

Does cinnamon accelerate metabolism?

In the past couple of days, I've repeatedly heard and read that cinnamon consumption increases the metabolic rate in humans. A Google search brings up plenty of results. However, few of them cite any ...
Janosh's user avatar
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5 votes
0 answers
52 views

What are signs that metabolism is slowing in dieting? [closed]

when you're on a diet and you hit a plateau, they say your metabolism may have slowed because you're in "starvation mode." My question is, when this happens do you get fatigued/sleep a lot/not have ...
user185383's user avatar
1 vote
2 answers
179 views

Blood Test Panel for weight loss in females

Is there a well regarded medical/academic type of blood panel test or list of items to get tested for, when unable to loose weight, despite proper diet and exercise efforts? For example, this comes ...
P.S.'s user avatar
  • 113
1 vote
0 answers
23 views

Swallowed very little and porous plastic parts. Might it be dangerous?

I ate something with my headphones on, and after eating I noticed that the ear speaker lose their covering film. I noticed as after lunch I touched them and had little black particles of the cover in ...
StefanH's user avatar
  • 111
2 votes
1 answer
198 views

on what metabolism depends

Some people have fast metabolism (high basal metabolic rate), but some slow one. Usually it's high for men and decreasing with age. And fast metabolism is considered as good one, because it keeps ...
Alexan's user avatar
  • 719
1 vote
0 answers
14 views

What is the total prevalence percentage for pre-diabetics and diabetics for black race in the US?

What is the total prevalence percentage for pre-diabetics and diabetics for black race in the US? I had a black friend who worry about this, i want to comfort him by saying that this number is not ...
Victor's user avatar
  • 73
1 vote
1 answer
51 views

Impact of Various "Feminizing" Hormones on Metabolism

I've read that progesterone is linked to changes in metabolism and appetite, and that those undergoing hormone therapy with progesterone often experience profound changes in hunger and meal habits. I ...
Alexander Eichner's user avatar
5 votes
1 answer
2k views

Effects of microdosing alcohol on liver performance and the ability to metabolize toxins

Has there been any research on microdosing of alcohol? I did a cursory search but it didn't yield any viable information. Putting regular stress on various parts of the human body and its systems ...
dtech's user avatar
  • 159
4 votes
0 answers
119 views

What are the physiologic indicators of keto-adaptation as it becomes our primary metabolism?

I understand that insulin prevents ketosis and glucagon prompts it. Aside from these antagonistic, pancreatic hormones, ketosis and keto-adaptation seems to emerge and establish itself through other ...
Rob Hanna's user avatar
3 votes
2 answers
120 views

Too much sitting as bad as smoking?

I have heard that when you sit very long times every day that it is as bad for your health as smoking cigarettes. Especially, it is bad for your metabolism and especially the lungs get into a bad ...
user avatar
1 vote
1 answer
101 views

is 1.319 IU/ML Helicobacter Pylori IGG normal?

Doctor suggested me H-pylori Stool test & now I have the report which indicates: Test Name:Helicobacter Pylori IgG Result:1.319 IU/ML Normal Ranges: < 0.9 --> Negative 0.9-1.0 --> ...
Moeed Farooqui's user avatar
2 votes
1 answer
85 views

Do big people age faster?

I learned that age is mutations across cells that become more common as you get older. Since a bigger person uses more calories and their cells die and are renewed more often, does that mean they have ...
nelomad's user avatar
  • 647
2 votes
3 answers
186 views

Does Higher Eating Frequency Increase Metabolism?

Note: I asked this question on the Skeptics exchange and was redirected here. Also note, I was informed that it may have been a duplicate on the Skeptics forum, but I was subsequently linked to a post ...
FrancisHoneywellCollins3's user avatar
3 votes
1 answer
41 views

Does caffeine reduce mass gaining by accelerating metabolism?

Does caffeine reduce the effects of weight lifting on mass gaining by activating metabolism, either for every individual or more specifically for ectomorphs who already have fast fat burning ...
James Well's user avatar
6 votes
1 answer
153 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 ...
P A N's user avatar
  • 198
7 votes
1 answer
185 views

Does exercising lower your lifespan?

I read that the consumption rate (Cal) of stronger muscles while resting is higher than that of less dense muscle tissue. Kleiber's Law and Rate of Living Theory states that organisms have circa the ...
nelomad's user avatar
  • 647
-1 votes
1 answer
37 views

Is there a difference between raw-eaten and dispersed sugar? [closed]

I've always wondered this one question: If in one liter of Coca-Cola there is a 30 sugarcubes equivallent, how is it possible for the fastfoods to make it from a little of powder? So is the ...
Probably's user avatar
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