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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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Does vitamin D supplementation fully replace sun exposure to avoid vitamin D insufficiency?
I read on {1}:
the optimal strategies to achieve and maintain vitamin D adequacy (sun exposure, vitamin D supplementation or both), and whether sun exposure itself has benefits over and above ...
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Truth or fiction: Testing vitamins to take by holding them and assessing strength
I'm a Ph.D. candidate in molecular biology and cannot convince my indoctrinated mother and grandmother that you cannot determine whether or not you need to take a vitamin by simply holding it and ...
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Are synthetic vitamins from drugstores far less healthy and useful than those from natural products?
Is it correct that vitamin supplements that are sold in drugstores in form of pills/tablets are not so useful for health than those that we get from natural food, vegetables and fruits?
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Is it safe to eat more Vitamin B than you need?
My uncle who worked in pharmaceutical factory, says it is safe to eat more Vitamin B than you need, because people have limited absorption of Vitamin. Is this ture ?
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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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Effect of Long Pressure Cooking on Essential Nutrients
My dietary staple is currently a soup made from meat, bone, and assorted vegetables pressure cooked for two hours at 15 psi (at the boiling point of about 250° F). I consume it in its entirety, ...
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What vitamins or dietary supplements for internal taking are useful for injured skin?
I was injured 2 months ago. After the removal of the stitches a normotrophic scar (about 1 cm long) is forming on my face. I would like to indirectly contribute to the skin and my constitution for ...
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Effect on Alertness of Nutrients
My question in its simplest sense is: would a person avoiding complex carbohydrates, but having adequate essential nutrients, be more likely to lack alertness during the day? Are carbohydrates ...
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What vitamins are useful for restoring the skin after an injury?
I was injured 4 weeks ago. After the removal of the stitches, either an atrophic or a normotrophic scar (about 1 cm long) was formed on my face. I would like to contribute to the skin and constitution ...
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How fast can serum calcium, magnesium and potassium levels change?
Can serum electrolytes (such as Ca Mg or K) within NORMAL limits rise or drop substantially within 12-24 hours? Enough to go outside of normal range, even to the point of being symptomatic?
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Why do vitamin supplements often have quantities way in excess of RDAs?
When I have a cold or otherwise feeling ill, I like to take vitamin C supplements. I've noticed that they almost invariably have amounts way above the recommended daily allowance.
For example, one ...
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Can I use take pills to prevent micronutrient deficiencies and not worry about my diet too much?
There are several nutrients which I'm not getting enough of from food, in some cases hardly any, due to dietary restrictions. I can get the nutrients I need if I carefully structure my diet, but I don'...
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How to calculate nutrition fact?
I'm not sure i'm posting on the right place and I don't really know what it is called.
I just wondering. How the cuurent food company calculated the nutrition information of they food?
In my opinion:
...
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Are eggs good or bad for iron incorporation?
Apart from the fact that egg yolk contains very good and plenty of iron, I read on several websites that egg white hinders the digestion of iron. However, I could not find any deeper reasoning about ...
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How long after finishing meal will vitamins be well absorbed?
How long after finishing a meal will taking vitamin supplements work well (the vitamins will be absorbed in a sufficient amount) if the recommendation states that it should be taken with food?
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What is the LD50 on once-a-day vitamins?
Just because I want to know. For reference, here is the ingredient list for ONE A DAY Men's Health Formula:
Vitamin A (14% as beta-carotene) 3500 IU 70%
Vitamin C 60 mg 100%
Vitamin D (as Vitamin D3) ...
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Which fruits loses less vitamins during a juice preparing?
Some time I go to shopping and drink a juice, but I would like to know which one loses less vitamins during the preparation. Because I want to ask the juice that I can take more vitamins (it's ...
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