10
votes
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Where does fat go when you lose it?
Fat cells make up adipose tissues. Most fat in our body is stored in adipose tissue.
It is true that we do not lose fat cells. Fat cells would only shrink in size.
We do respiration all the time, ...
- 256
10
votes
Accepted
Is there an optimal body fat percentage?
Currently I am not aware of any scientifically based recommendations for levels of healthy body fat. There are empirical observations and actuarial tables/considerations, but there hasn't been a ...
- 6,560
7
votes
Accepted
How many Calories Deficit Equals 1 KG Loss, approximately
Burning 3,500 calories equals 1 pound of weight loss. To lose 1 kilogram of body weight, you would need to create a deficit of about 7,700 calories.
As stated above, 3,500 calories equals about 1 ...
- 735
7
votes
How to reduce weight-caused man boobs (psuedogynaecomastia)?
No, gynecomastia is a hormonal condition in which mammary tissue develops and enlarges in a male. Pseudogynecomastia is the word for what you're describing.
How do you know what you have is only ...
- 9,564
7
votes
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Would excess body fat provide a significant survival/longevity advantage in a situation of sudden starvation?
Assuming no underlying health problems and similar muscle stores, the obese person would survive significantly longer.
When eating normally, the body gets most of its energy from free glucose and ...
- 246
6
votes
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Considering obesity using BMI
All models are wrong, but some are useful.
The same is true for the body mass index. In general, people with a higher BMI have a higher chance of getting obesity-related illnesses than those with a ...
- 286
6
votes
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How does poor sleep cause circles under one's eyes?
These dark circles can likely be attributed to vascular network prominence caused by hollowing of the contents of the orbital rim, pigmentary changes in the periorbital area caused by extravasated ...
6
votes
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Am I overweight? Bad self image...?
No, you are not overweight at all, and whoever told you it was a good idea to even consider a "diet" was very mistaken. Don't listen to them.
At 120 pounds and 5'5", your Body Mass Index is 20.0, ...
- 9,564
6
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How to lose weight without doing exercise?
Besides changing the amount of calories you expend or consume there aren't many more options. You might attempt to reduce your stress level. The 1994 paper Stress-induced cortisol response and fat ...
- 214
5
votes
Accepted
Wrong region for accumulation of fat
I think there is only so little you can do about the fat accumulation. These things are work of natural evolution and genetics.
From the Female body shape article in Wikipedia:
Estrogens cause ...
- 2,312
5
votes
Does lowering your resting heart rate decrease your metabolism?
The short answer is no, your metabolism isn't really driven by your heart rate.
The basic definition of metabolism is that it is the process by which your body converts the food and liquid that you ...
- 6,560
5
votes
Are there health risks associated with dropping to very low fat levels, as athletes often do?
There is a well documented association between strenuous exercise and menstrual irregularities in women.
Some authors have argued this should not be considered pathological since the effect is ...
- 410
5
votes
What is the error on various body fat percentages?
Frankenfield and colleagues [1] reported an immense variation between BMI and BFP below a BMI of 30 (obese, or 25% BFP in men and 30% in women according to the same study).
The r^2 value for ...
- 203
4
votes
Human body density statistics
Insulin Resistance, Body Weight, Obesity, Body Composition, and the Menopausal Transition (ScienceDirect, 2000)
Because bone and muscle have greater density than water, a person
with a larger ...
- 15.7k
4
votes
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Would a person with high body fat survive longer without food?
Scientific studies of individuals who have died of starvation are thankfully uncommon. However, an analysis of the literature published in 2001 provides evidence of a sort of "minimum BMI" ...
- 2,901
4
votes
Accepted
What is the error on various body fat percentages?
I don't know if there are canonical references for these measurements. I've found a couple references that seem good enough for an order-of-magnitude estimate, though.
Latour, A. W., Peterson, D. D., &...
- 12.9k
3
votes
What is the impact of electrolyte intake on weight loss?
You asked for any evidence, and we have this paper, Increased salt consumption induces body water conservation and decreases fluid intake which is interpreted in this newspaper article.
Essentially, ...
- 13.2k
3
votes
Accepted
How does gallbladder removal affects fat digestion?
The bile is produced in the liver and stored in the gallbladder. After a meal, fats trigger gallbladder contraction, which results in the release of the bile into the small intestine. The bile helps ...
- 15.7k
3
votes
Accepted
Wearing a corset
1. Does wearing a corset have any disadvantages?
Yes.
The wearing of a corset for extended periods of time to maintain or reduce waist size is called tightlacing. It is commented (though nowhere I can ...
- 1,084
3
votes
How to lose weight without doing exercise?
Losing weight via means of altering your diet will be safest choice, however, that doesn't mean it is your only option. In my opinion, dieting is an incredibly vague term. Ensuring you are eating a ...
- 630
3
votes
Why omega-3/6 ratio is important?
The book Living a Century or More by William Cortvriendt MD, which has a lot of scientific sources that I don't have the expertise to judge but seem reliable, says in the subchapter "Omega-3 PUFAs and ...
- 153
3
votes
Where does fat go when you lose it?
Does not really answer your question regarding where fat cells go when you lose weight as it has been already discussed previously by the previous posts, but I had to share the link to the video on "...
- 223
3
votes
Accepted
How efficient is the human metabolism at converting macronutrients to fat
In short, 1,000 excessive calories from food does not translate into 1,000 calories of body fat. The conversion rate is highest for fats and lowest for proteins and may greatly depend on genetics.
1) ...
- 15.7k
3
votes
Would excess body fat provide a significant survival/longevity advantage in a situation of sudden starvation?
Yes ... unless the fit person uses their advantage to kill and eat the other.
This is probably the evolutionary cause of obesity: if you have an irregular food supply, it is sensible to build up a ...
- 191
3
votes
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Is high metabolism a problem?
Home Bioimpediance
First, let me start this answer by saying that available evidence suggests that home bioimpediance devices are wildly inaccurate. This study from Consumer Reports notes:
Rating a ...
- 2,901
2
votes
Accepted
Why omega-3/6 ratio is important?
From the NIH:
Several sources of information suggest that human beings evolved on a diet with a ratio of omega-6 to omega-3 essential fatty acids (EFA) of approximately 1 whereas in Western diets ...
- 112
2
votes
Does caffeine reduce mass gaining by accelerating metabolism?
Answer: No
Summary
Metabolic effects of caffeine may vary depending on whether one is 'naive' to caffeine (infrequent user) or 'accustomed' to caffeine (daily user). Metabolic effects may also vary ...
- 1,084
2
votes
Benefits of tea in weight loss
So with everything related with diet there are two effects: whether a particularly diet affects what macronutrients you eat, and the effect of the food itself.
According to NHS advice green tea in ...
- 198
2
votes
Can Protein and low calories vegetables(kale, spinach) be used as sole source of energy?
Going on such a diet (one that is void of fat) for sustained periods of time is simply not possible. Fat is an essential macronutrient your body needs. Never go on a diet that is void of fat.
Fat is ...
- 480
2
votes
Exercise vs Fasting: Which is better for weight loss?
A mathematical model has been created to examine the relationship between diet and exercise with respect to weight loss; Quantification of the effect of energy imbalance on bodyweight.
The NIH has ...
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Only top scored, non community-wiki answers of a minimum length are eligible