Hot answers tagged

19

Caffeine metabolism has to do with your genetic makeup. The slower you metabolize caffeine, the more effect it will have on you. The cause for the differences that people have in how fast they metabolize caffeine has to depend on the CYP1A2 gene. Variants of this gene can cause you to metabolize faster or slower. The C allele variant in the AHR gene, which ...


7

The question appears to be motivated by headlines similar to this Mixing large doses of both acetaminophen painkiller and caffeine may increase risk of liver damage where it states WASHINGTON, Sept. 26 2007 — Consuming large amounts of caffeine while taking acetaminophen, one of the most widely used painkillers in the United States, could potentially cause ...


5

Glucose and insulin could co-exist in the same container without reacting. Intravenous insulin has been used to treat hyperglycemia. There is a risk of severe hypoglycemia and even death after intravenous insulin (Diabetes Spectrum), which makes it inappropriate for use outside hospitals. What naturally happens during stressful physical work? Stress ...


5

All caffeinated beverages like coffee (even decaffeinated) and soft drinks give short bursts of energy, temporarily raise blood pressure, and reduces blood flow to inactive limbs. Soon after you drink coffee (containing caffeine), it’s absorbed through the small intestine and dissolved into the bloodstream and it’s able to penetrate the blood-brain barrier ...


4

Maybe. Depends on the 95-year old... and the 25-year old. A heart failure diagnosis isn't just the process of getting older; it has objective criteria. I expect most 95-year olds would score above zero on this scale, many quite highly, but not all of them would. And, of course, we know there are 25-year olds who would score highly too, so I'd say it's a ...


4

Can aging of the heart be equivalent to having (mild) heart failure? Absolutely. A large part of aging is the process of telomeres shortening with each cell division, making our DNA more vulnerable. As more DNA damage accumulates, more cells in the heart (and everywhere else in the body) become dysfunctional - that's essentially what aging is. So while ...


3

Resting energy The number you are looking for is basically the energy the body needs in a resting state. When resting, we assume that no energy is used for any actions but vital ones, as the body is not exactly doing anything. Measuring that energy Measuring that energy is slightly more complicated. Here is my solution to it: With any machine, we are ...


2

It sounds like what you are looking for is the basal metabolic rate, which is the rate that you expend energy at rest, which roughly translates to the minimum rate that you need to consume energy in order to survive long term. It varies significantly from person to person based on a large number of factors. A number of formulas to estimate it for a given ...


2

You're asking for subjective opinion, so that's what you're going to get. I've taken it a few times and here are my answers to your questions: Mentally alert and awake. A mental energy boost, yes. Physical, not so much. No, it's not a general stimulant like amphetamines. It makes you mentally alert and wakeful, but there is no cardiac stimulation, ...


2

Simplified from CALCULATION OF THE ENERGY CONTENT OF FOODS - ENERGY CONVERSION FACTORS (FAO.org) Food energy can be: Combustible or ingested energy = theoretical maximum energy content of a food measured using bomb calorimetry (the energy you ingest) Metabolizable energy (ME) = ingested energy minus energy lost in feces by indigestible nutrients (the ...


2

Ferritin levels of 21 ug/L are on the extreme lower edge of the normal range. You can think about iron stores as follows. A healthy person will have iron stores of a few grams. Since iron is present in every cell of the body, we lose iron via the loss of dead skin cells, mucus, sweat etc. etc. The iron in red blood cells is recycled when they die, so we don'...


1

The amount of carbohydrate which we intake determine the activity of various enzymes involved in this glycolysis and lipogenesis. And high carbohydrate diet directly activates the genes responsible fatty acid synthesis. In tissues where Malate cycle works, the fat synthesis mainly depends on the metabolic state of cell. Fat synthesis results in production of ...


1

The definition of a Calorie (Note the big C, a food calorie is actually a kilocalorie, or 1000 small calories) is simply the amount of heat necessary to raise the temperature of 1 kilogram of water 1 degree Celsius. To get this, originally foods were burned in a bomb calorimeter, and the calories determined by the rise in heat of the water. Now (At least in ...


1

To get the answers started, though admittedly with a very rough estimation, I'll add my own idea of a lower bound of calories burned to regrow an entire liver. Because basic laws of thermodynamics state that to produce 100 calories worth of food requires at the very least 100 calories worth of energy, an estimate on the nutritional content of the liver ...


1

There is a reason you get tired after eating - It's due to a portion of your blood in your body moving to your gut and bowel, leaving less for the rest of your body (brain, muscles etc) and slowing you down, making you sleepy(1)! Whether is is healthy or not, it's neither here nor there. It can mess with your natural sleeping cycle, but it is also not good ...


1

You should not worry about having a body that functions in a way that is a bit outside of the norm if this doesn't cause problems for you. If our distant ancestors had the intellectual capability to worry about such things, we could never have evolved to become humans. A healthy human being can after all also be considered as a pathological version of ...


Only top voted, non community-wiki answers of a minimum length are eligible