10
votes
Accepted
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
7
votes
Accepted
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
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 ...
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6
votes
Accepted
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, ...
- 9,935
6
votes
Accepted
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
Accepted
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 ...
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 ...
- 15.9k
4
votes
Accepted
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" ...
- 3,334
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., &...
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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, ...
- 13.3k
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
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
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
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) ...
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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 ...
- 15.9k
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 ...
- 1,104
3
votes
Accepted
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 ...
- 3,334
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 ...
- 1,104
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
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 ...
- 13.3k
2
votes
Which kind of muscle has greatest resting metabolic rate; big muscle, or strong muscle?
Background:
Basal Metabolic Rate is the minimal rate of energy expenditure per unit time by endothermic animals at rest. Several BMR equations exist but the most notable one was the Harris-Benedict ...
- 1,104
2
votes
Does tightening abdominal muscles reduce abdominal fat?
conscious tighten abdominal muscles would help me reduce abdominal fat.
No it wont.
Does tightening abdominal muscles all the time not harm my body?
To build muscle you essentially need to damage ...
- 1,104
2
votes
Accepted
Disadvantages of Running in Night after dinner
Immediately after dinner - No. The body is re-directing a significant amount of blood to your stomach region to deal with the dinner you just had.
Therefore, a run would not be advisable.
You ...
- 280
2
votes
What to eat when you are a skinny fat?
More physical activity would very probably be a good idea.
Body fat distribution has genetic determinants, and you cannot really target a body area for fat reduction. Conversely, exercising can have ...
- 391
2
votes
Considering obesity using BMI
Let's not conflate two different problems with BMI here. One the one hand you can have a low body fat percentage and still have a high BMI, but that only applies to body builders who exercise at a ...
- 2,270
2
votes
What is the mechanism of action of tamoxifen and other SERMs on Gynecomastia?
According to this review article:
Estradiol and, to lesser degree, other estrogens, increase proliferation of breast epithelium and stroma and, consequently, increase the chances of mutation in ...
- 1,124
2
votes
Accepted
Fat cut out and repositioned in facial surgery - how does it survive and reattach?
First, I think it's useful to clarify exactly what the surgeon is doing here:
The Five-Step Lower Blepharoplasty: Blending the Eyelid-Cheek Junction.
Rohrich et al. Plastic and Reconstructive Surgery....
2
votes
How are Fat Calories in meat calculated?
For the US, see 9 CFR § 317.345
The nutrition label data for products covered in paragraphs (a)(1) and (a)(2) must be based on either the raw or cooked edible portions of meat cuts with external ...
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Only top scored, non community-wiki answers of a minimum length are eligible