Questions tagged [micronutrients]
Questions about micronutrients - substances necessary for normal metabolism, growth and development, and regulation of cell functions, but needed only in very small amounts. Vitamins (such as A, B group, C, E, K etc.) and trace minerals (such as zinc, selenimum etc.) are micronutrients.
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How much Vitamin D does the body produce if you're out for a whole summer day?
Imagine that a person is outdoors the whole day in the summer. They're tanned enough that they don't get sunburn. How many IU (International Units) of bioavailable Vitamin D do they produce in a way?
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What nutrients directly increase the blood preassure when absorbed?
If I understand this article correctly, the uptake of sodium from the gut into the blood stream directly increases the blood preassure, partly by retaining water in the blood stream.
What nutrients (...
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Excluding individuals that do not lack nutrients: What limits the quality of multivitamins, and how to address it? [closed]
This page, and this seem to suggest that multivitamins are generally useless as their value is not seen in a statistically significant manner.
This also mentions that some brands use fillers, and goes ...
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Is there a correlation between a vegan diet low in Vitamin B12 and the occurrence or severity of vitiligo?
Studies have shown a significant reduction of Vitamin B12 levels in individuals with vitiligo. This meta-analysis provides an overview: https://pubmed.ncbi.nlm.nih.gov/30165163/
Results: Twenty-two ...
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Is intake of 1 tablet of 500 mg vitamin C per day unnecessary? [duplicate]
1 tablet of vitamin C has 500mg which is 556 %DV according to the label. I know that daily limit to feel healthy without symptoms is around 1000mg.
Label also says that serving size is 1 chewable ...
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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?...
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Is there a relationship between vitamin D levels and cholesterol?
I've been trying to read up on high cholesterol and there is a lot of information out there about it. In addition to "don't eat fatty foods" and "exercise more," there are some ...
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Why did the toxicity recommendation for vitamin D changed the last 20 years?
I have recently noticed that some supplements contain a high number of vitamin D e.g.at least 50mcg (2000IU).
That got me curious because references I have, written in early-mid 80s explicity state ...
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Understanding google's nutrition chart
When I googled "Chikpea", it shows following chart on right:
It says:
*Per cent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your ...
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Where do RDI (recommended daily intake) values come from?
We are told to follow the RDI for a variety of nutrients. This is repeated over and over by teachers, guides, nutritionists, medical doctors and so on. However, when asked, no one can provide me with ...
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Timeframe of MMA / HCY response to Vitamin B12 supplementation
What is the timeframe one can reasonably expect for elevated serum Methylmalonic Acid and Homocysteine levels to be normalized by supplementation (e.g. 250 μg daily cyanocobalamin), assuming ...
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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 ...
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Why would you take Vitamin D twice a week instead of once a day?
After coming up low on Vitamin D on a blood test, I was once prescribed a Vitamin D supplement (Fultium-D3 20,000 IUs). This was on a rather odd basis - instead of a dose every day, it was a whacking ...
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Minerals and Vitamins: Does RDI balances in 2 days of opposite quantity intake? [closed]
I wonder if RDI (or DV) balances in 2 days of opposite quantity intake?
For example lets say Vitamin A:
Day 1 intake against RDI = 10%
Day 2 intake against RDI = 190%
So, will this balance it out for ...
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Do we produce Vitamin D in the shade?
Do our bodies produce Vitamin D in the shade?
If so, what is the percentage decrease in the amount of Vitamin D produced compared to full exposure to sunlight?
For example, sitting outside in the ...
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Do protein bars/shakes provide nutrients that your body can use? [closed]
To my understanding, a lot of people consider protein bars/shakes unhealthy. They are processed, often sugary, and contain chemicals that are probably used to create gym mats.
I eat protein bars ...
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Can (mal)nutrition cause muscle twitches?
We have often seen and/or experienced annoying involuntary muscle twitches in the corners of the eyes, in calf muscles etc. But I have wondered about their causes.
WebMD states that
[e]yelid ...
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Time needed for vitamin B6 to reach the brain
If you take 250 mg of vitamin B6 orally as film-coated tablets, how long does it take until the greatest portion of it reaches the brain? When does the peak occur and how does the substance spread? ...
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Is it useless to drip Vitamin D drops on your tongue? [closed]
One celebrity doctor in my country says that Vitamin D can be absorbed only in the small intestine and that dropping Vitamin D drops on your tongue is therefore useless, because most of the liquid ...
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Vitamin B food source [closed]
My question is very simple. What are some good vegetarian food sources for vitamin B? I'm asking this here because I tried to search it on the net but couldn't find much.
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Are collagen supplements of any use to help prevent or treat a tendinopathy?
Are collagen supplements been scientifically shown of any use to help prevent or treat a tendinopathy? If so, what kind of collagen supplements (e.g., type of collagen, source of collagen such as (...
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Do tocotrienols reduce tocopherol uptake?
I've read that a-tocopherol competitively reduces the uptake of tocotrienols.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3681510/
What I'd like to know is: Do tocotrienols competitively reduce the ...
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Boiling vegetables for an hour and retention of their nutrients
I boil broccoli, eggplants, courgette/zucchini and okra for an hour on high heat before eating them, because I prefer them totally soft so that I don't have to chew them (for personal reasons, ...
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Are synthetic vitamins harmful? [closed]
There are lots of studies which claim that synthetic vitamins (the one that are in nearly all vitamin pills) are harmful for your health and can lead to an early death and heart problems etc, are ...
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How often do I need to eat water-soluble vitamins?
Preciser phrasing of the question:
Do I need to consume the daily recommended dose of water-soluble vitamins every single day? Or is it sufficient if my consumption averages to the daily dose over a ...
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Why does the USDA not examine aliments for weighted mean nutrient reduction potential and weighted mean fat viscocity and divulge such information?
So I get that antioxidants are really important to combat free radicals, aging, stress, e.t.c. This information is quantified by the reduction potential. Would the value of the information be less ...
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How much Vitamin A is in 1g of Fish Oil?
I have been researching fish oil supplementation, and one thing that concerns me is that fish oil may contain Vitamin A, which is fat soluble. Hypervitamintosis A can occur if too much Vitamin A is ...
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Is vitamin B12 in supplements protected from stomach acid?
To prevent destruction by stomach acid, Vitamin B12 must usually be bound by haptocorrin (R-factor, transcobalamin-1).
It would make sense for haptocorrin secretion to be in the ballpark of the ...
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Why can't one overdose on zinc by eating zinc-rich food such as oysters?
I've come across the following statement:
Although some foods contain zinc well above the UL of 40 mg per day, no cases of zinc poisoning from naturally occurring zinc in food have been reported.
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Does boiling milk really make the nutrients in it less useful to the body when ingesting it?
Does “denaturing” nutrients in milk by boiling it make them less useful, or actually more useful, as they undergo “denaturation” anyway during digestion? I've read online that boiling milk "denatures" ...
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Should antioxidants such as turmeric, resveratrol, glutathione, etc. be taken at bedtime, and if so, what explains it?
I read on https://thelivingproofinstitute.com/time-day-supplements (mirror):
It is best to take antioxidants such as turmeric, resveratrol, glutathione, etc… at bedtime. The reason in the ...
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How much vitamin C last in orange juice?
Vitamin C is a fragile micronutrient [1,2]. Any manipulation of the fruit which contains it, can destroy it.
Let's talk for orange juice, for example.
Virtually, staring with harvesting of the orange,...
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Does Blood Testing give meaningful insights in Vitamin/Mineral Deficiency?
I yesterday watched the documentary Vitamania by Dr Derek Muller, which is about the production, benefits and risks of vitamin supplements. In the film, he briefly talked about people being blood ...
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Which kind of healthy vitamins and enzymes decrease during freezing? [closed]
I heard that a lot of useful vitamins, minerals and enzymes are not saved and decrease after different periods in the freezer. Is it true? How does the temperature of freezing and duration of saving ...
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RAE vs IU in Vitamin descriptions
Reading an article about Vitamin-A:
Vitamin A
Fact Sheet for Health Professionals
The following acronym RAE in:
RDAs for vitamin A are given as mcg of retinol activity equivalents (RAE) to account ...
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Link between shaving body hair and weaker scalp hair
I suppose this question can be addressed to both males and females, but it would be interesting to know if it varies between the two genders (hormones, etc).
I want to know if shaving body hair (...
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Is vitamin deficiency associated with hair loss?
I've heard some rumors say that vitamin D deficiency can be a cause of hair loss in humans, but I'm not even marginally sure about this fact.
I'd like to be better informed about vitamins' actions - ...
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Checking nutrition balance
I've just started to explore nutrition.
I assume that:
a1) A human body needs some minerals and vitamins, which can be delivered either in food or as supplements
a2) There's recommended daily ...
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Vitamin supplements with a balanced diet
It is always said that with a balanced diet, all important vitamins and trace elements are supplied. It is also said that the body only uses the vitamins inside the fruit when its needed. But what ...
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Supplementing potassium to get my 4.7g RDA - is it safe?
Potassium supplements are limited to 100mg, however the RDA is 4.7g. From the foods I do eat (and will continue to do so), I get around 1.5g of potassium per day, which is way too little. However, is ...
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Optimum / limit daily dose of Vitamin C?
The National Institutes of Health's Office of Dietary Supplements states that the recommended daily amount of Vitamin C for an adult male is 90 mg. The highest recommended dose is 120 mg for ...
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Omega 3/6/9 versus Omega 3 supplements
Are there any benefits to taking an Omega 3/6/9 supplement versus just taking an Omega 3 supplement?
According to Wikipedia, in a "typical Western diet" the ratio of Omega 6 to Omega 3 fatty acids is ...
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What needs to be exposed for the body to produce Vitamin D?
What parts of the body need to be exposed to sunlight for the body to produce Vitamin D?
Some say it's the skin, some say it's the eyes, and some say it's a combination.
The most common answer I ...
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Which essential nutrient is the first that will cause debilitating illness if supply is insufficient
While reading about the US requirements for food labeling (How to Understand and Use the Nutrition Facts Label) about essential nutrients it became obvious that that label is far from complete.
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How to improve omega-3 fatty acid absorption? [duplicate]
I'm going to add an omega-3 supplement in my diet using encapsulated fish oil pills.
I want to know how can I improve its absorption, and also understand why.
That is the boundary conditions:
when, ...
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How to gain weight naturally or by food around the house [closed]
I'm 24 years old, vegetarian and weigh 31Kg. Can anybody tell me how to increase weight naturally and what food to keep around the house?
Also I would like to ask, in my childhood I did not take ...
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Do slow juicers yield a more nutritious juice than regular juicers?
I have read some claims that slow juicers yield a more nutritious juice than regular juicers.
YouTube
The Hurom Slow Juicer using a low-speed type screw doesn't damage the raw ingredients with a ...
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What can cause stomach issues in a vegetarian?
I'm curious as to what sorts of viral, bacterial, or otherwise physiological sources could cause stomach discomfort in a vegetarian and in the presence of all of the following (in other words, having ...
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How to ingest vitamin C for patients after a gastric surgery?
Vitamin C is an essential nutrient and a powerful antioxidant. While many sorts of fresh fruit and vegetables are a great source of this vitamin, it is sensitive to heat and might decompose during ...
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Soft foods that are high in vitamin B3
I recently found out that having sufficient vitamin B3 can help prevent gingivitis, I need to know some good soft foods that have a lot of vitamin B3 because eating hard food right now will likely ...
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