The study of the appropriate provisions to sustain life in an organism, or the provisions themselves.
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22 views
In which blood vessels are these nutrients first found?
Some nutrients from the small intestine get absorded into the lymph and then led into the systemic circulation.
In which blood vessels are these nutrients first
found?
The answer should be in the ...
1
vote
0answers
15 views
Looking for detailed nutrient/energy flow at the bottom of the freshwater food chain
I am trying to model the production and consumption of nutrients and waste at the bottom of the food chain in freshwater ecosystems.
I can only find broad information on the Internet and don't know ...
5
votes
1answer
40 views
functional hypocholesterolemia due to very high HDL or low LDL?
Nutritional and medical recommendations about cholesterol seem to focus exclusively on hypercholesterolemia, and as such, they provide only a maximum desirable level for LDL and a minimum for HDL. ...
2
votes
1answer
55 views
Can animals use the nitrogen in chitin to build proteins?
Fungi and insects contain chitin, which is about 6% nitrogen.
Can an animal - like me - make use of this as a nitrogen source to build proteins?
Are there any animals that can do this?
Are there ...
1
vote
0answers
38 views
Are there nutritional benefits to drinking diluted urine?
I know that urine drinking is a widespread practice (with a long history). The main reason that people give today involves there being nutrients in urine.
If there are nutrients to be gained, why is ...
0
votes
0answers
23 views
Vitamin and mineral contents of common fruits
I'm looking for nutritional data, mostly vitamin and mineral contents of common fruits, such as apples, bananas, oranges, kiwis etc.
Are there scientific (published and peer-reviewed) sources that ...
1
vote
1answer
27 views
Do repeated freeze-thaw strip nutrition from vegetables/food?
For some inexplicable reason from the ladies in my extended family (even friends!) seem to believe that vegetables/food should be subjected to as few freeze/thaw cycles as possible. The rationale put ...
1
vote
0answers
33 views
Why does trans fat decrease hdl's?
I understand that cis fats increases hdl's, and unsaturated fat increases ldl's, but trans fat increases hdl's and it decreases ldl's. Why does trans fat do this?
7
votes
1answer
318 views
What is the composition of human feces?
Are there any studies or general information on the composition of human feces?
I'd specifically like to know the percentage of carbohydrates and amino acids relative to the amount that was ingested ...
4
votes
1answer
92 views
Possible to Gain More Weight than the Food You Eat
I was wondering if it's possible gain more weight than the mass of the food you eat. At a first look, this is impossible because of conversation of matter, but are there other things to take into ...
4
votes
1answer
76 views
Is the amount of phosphoric acid added to colas enough to disrupt the function of the kidney over the long term?
Both Coca-Cola and Pepsi add phosphoric acid $H_3PO_4$ to their colas to give them a signature "bite".
The kidneys use a phosphoric acid/dihydrogen phosphate/hydrogen phosphate homeostasis as one ...
9
votes
3answers
168 views
Has there ever been an attempt to create nutritionally tailored food for adult human consumption?
For all domestic animals, and for all animals kept in laboratory, complete and precise composition of perfect food is figured out (cat food, dog food, cattle, rats, laboratory monkeys and apes) -- ...
2
votes
0answers
13 views
Which part of oranges contain fiber?
I think it's pith, but here (non-english country) many chef suggest orange's vascular veins which look "fibrous" and have similar translated word with "fiber" itself.
Please enlighten me which?
6
votes
2answers
82 views
Do omnivore mammals vary food preferences based on dietary needs?
I'm wandering if mammals that can eat many different kinds of food (omnivores) vary their preference for food not only based on the availability, but also based on dietary needs?
I'm looking at this ...
5
votes
2answers
60 views
laboratory mice, nutrition, and humans
It seems that many nutrition experiments [directed at human diet] are carried on laboratory mice. Is there any justification that nutrition that is good or bad for laboratory mice will also be same ...
3
votes
3answers
93 views
What Defines a Food as Edible?
With many foods today containing chemicals, agents and preservatives etc... What biological criteria must a new food and its constituent components satisfy biologically, to be defined as edible?
...
7
votes
2answers
93 views
How was the guided daily amount (GDA) calculated?
We are constantly shown nutritional information on food packaging stating this food contains "x" amount of your guided daily amount. A linked to the values is here. How were these values calculated? ...
4
votes
1answer
79 views
What are minerals (other than zinc) that the human body cannot store
It is known that zinc is an essential mineral that the body cannot store.
What are other minerals, especially metals, that the body cannot store?
(other than water-soluble vitamins such as vitamin B ...
4
votes
1answer
773 views
What does the term 'bioavailability' mean?
From what I've read,
Bioavailability is the degree to which food nutrients are available
for absorption and utilization in the body.
How would you explain this with an example?
1
vote
1answer
94 views
Human Body “Fat” Equilibrium
Here's my theory:
If you consume x calories each day with y amount of caloric expenditure each day you gain zero weight, regardless of x and y being out of balance.
If you then mechanically ...
12
votes
2answers
102 views
Relationship between our microbiome and personalized nutrition
Recently, it has been asked whether there are 'metabolic types' between humans that can benefit from a sort of personalized nutrition. One answer suggested that one discerning factor could be the ...
