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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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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 ...
End Antisemitic Hate's user avatar
19 votes
1 answer
350 views

Are calcium supplements harmful, even if you stay short of the maximum dose?

Source: Do You Really Need Calcium Supplements?, Margaret Polaneczky MD, 2014 Oct 2 You may also have heard that taking calcium supplements can lead to heart disease. It’s still an open question. Some ...
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17 votes
5 answers
1k views

Is exceeding the US RDA for vitamin C dangerous?

When I travel I take vitamin C supplements. The product I use has 1000 mg of vitamin C. When traveling I take multiple doses every day. This way exceeds the US RDA of 90 mg for adult males. Is it bad ...
StrongBad's user avatar
  • 1,452
13 votes
1 answer
2k views

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 ...
End Antisemitic Hate's user avatar
11 votes
1 answer
879 views

Can effervescent multivitamin tablets cause teeth problems?

I somehow stumbled upon this article: Revealed: How fizzy vitamin supplements can wreck your teeth. Certainly, Daily Mail is probably not a very reliable source. But when I searched in Google Scholar ...
Martin's user avatar
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10 votes
2 answers
428 views

Is it possible to reverse the skin cell damage caused by sunlight by taking appropriate vitamins?

Of course it is said that vitamins C and E are good for skin, but I would like to know if it is actually possible to reverse any of the skin cell damage i.e. sunburn, skin aging, melanoma caused by ...
Aquarius_Girl's user avatar
10 votes
1 answer
170 views

Do light boxes effectively mimic the effects of natural sunlight to produce vitamin D?

Since moving to Seattle a few years ago, I'm wondering if I get vitamin D deficiency during the dark rainy months of the year. There are available light boxes that are used for treated seasonal ...
Dan B's user avatar
  • 277
10 votes
2 answers
147 views

Taking Supplements - space out my Vitamin A? And the others?

Each day I take a multi-vitamin and a cod liver oil tablet (along with creatine and L-Glutamine). Both of these tablets claim to contain 100% RDA (Recommended Daily Amount) of Vitamin A. I take these ...
VictorySaber's user avatar
10 votes
1 answer
227 views

Do vitamins protect you from common cold?

Do vitamins (taken as pills) boost your immune system, and make you less likely to contract diseases such as common cold or flu? Is there scientific evidence either way? I tend to think that ...
Nemo's user avatar
  • 201
9 votes
1 answer
250 views

Is UV light necessary for vitamin D generation?

As far as I know, glass blocks UV light, which is cancerous. Do we generate vitamin D behind a glass window, if we sit in the sun?
user85190's user avatar
  • 447
9 votes
2 answers
289 views

Are there any symptoms of Vitamin D deficiency?

I've heard that Vitamin D is mainly obtained from the sun or you have to take supplements. Getting it from the sun also depends on many factors, such as the latitude, time of the day, skin color, area ...
Ruchir's user avatar
  • 394
8 votes
1 answer
626 views

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? ...
draks ...'s user avatar
  • 133
8 votes
1 answer
3k views

Do vitamins affect sense of taste?

I like oranges. I really like oranges. But I go through cycles of eating them. When I start, they are really sweet. By my fifth of the day they have turned quite bitter. Sensing a pattern I have ...
Richard Parnaby-King's user avatar
8 votes
1 answer
306 views

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 ...
Franck Dernoncourt's user avatar
8 votes
1 answer
207 views

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 ...
era's user avatar
  • 530
8 votes
1 answer
308 views

Multivitamin course duration

I see that multivitamin pack contains tablets for 60 days. Should I buy a new one once this finishes? I particularly ask because one product contains 1200% RDA of B12. How long can you sustain that?
Valentin Tihomirov's user avatar
7 votes
4 answers
677 views

Is there an objective answer to whether or not taking a multi-vitamin dietary supplement is beneficial to health?

I understand that diet, habits and lifestyles differ preposterously across different countries and different people. Of late, there has been an increasing trend among people to take multi-vitamin ...
Prahlad Yeri's user avatar
7 votes
2 answers
1k views

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 ...
bsayegh's user avatar
  • 173
6 votes
1 answer
192 views

Do you need to consume iodised salt?

I don't eat table salt anymore except on very special occasions when I'm eating out or something like that, but in my home I prefer to use herbs and other things to add taste to food and avoid using ...
Freedo's user avatar
  • 797
6 votes
1 answer
154 views

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 ...
P A N's user avatar
  • 198
5 votes
2 answers
1k views

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 ...
End Antisemitic Hate's user avatar
5 votes
1 answer
345 views

High level of Vitamin D,1,25(OH)2, Total

I recently got blood test results and they say Normal Range, High level of Vitamin D,1,25(OH)2, Total = 18 - 72 pg/mL but my level is 96 I was researching this and found that it can be due to ...
Rhonda's user avatar
  • 561
5 votes
1 answer
141 views

Does taking Vitmain B-Complex with zinc through tablets really help in reversing hair fall

I am thinking of taking Vitmain B-Complex tablets. I am concerned about my overall metabolism and my prime concern is my hairs. Does it also help in treating premature grey hairs?
Jatin Sehgal's user avatar
5 votes
1 answer
120 views

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 ...
Ekkos767's user avatar
5 votes
1 answer
146 views

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,...
mattia.b89's user avatar
5 votes
1 answer
147 views

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 ...
Franck Dernoncourt's user avatar
5 votes
0 answers
216 views

What are the long term effects of dieting and maintaining a caloric deficit?

Are there any negative health risks for dieters assuming that you take a multivitamin, and other required supplements daily? The caloric deficit would end once the goal weight is achieved, which is ...
jiniyt's user avatar
  • 1,021
4 votes
2 answers
317 views

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? ...
Christian's user avatar
  • 751
4 votes
2 answers
3k views

Would putting vitamin pills in a blender alter their effectiveness?

Vitamin pills are usually taken orally or sublingually. If I crush them inside a blender as a part of a shake, would it compromise their function?
Sparkler's user avatar
  • 161
4 votes
2 answers
87 views

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 ...
Lucky's user avatar
  • 2,833
4 votes
1 answer
499 views

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 ...
U0001's user avatar
  • 141
4 votes
1 answer
108 views

Does one absorb more nutrients from juices than the whole fruit?

I read on this Doctoroz article: Some advocates for juicing may claim that your body absorbs more nutrients from juices than the whole fruit because the fruit’s fiber gets in the way. Is there any ...
Franck Dernoncourt's user avatar
4 votes
1 answer
79 views

Quantitatively and relative to the RDI of 900 μg, when does Vitamin A consumption become harmful?

For someone who consumes a lot of vitamins, it's easy to have excess Vitamin A in the body because it's fat-soluble. I've read in a lot of credible places that Vitamin A over-consumption is dangerous, ...
Wuschelbeutel Kartoffelhuhn's user avatar
4 votes
2 answers
183 views

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 ...
Eugene O's user avatar
  • 141
4 votes
1 answer
105 views

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 ...
user avatar
4 votes
2 answers
141 views

Is OMEGA 3 ALA required in addition to EPA DHA?

Omega 3 fatty acid α-linolenic acid (ALA) is considered essential unlike EPA and DHA since the latter two can be synthesised from it. Suppose one gets their EPA and DHA from oily fish, will they no ...
James Wilson's user avatar
4 votes
0 answers
50 views

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 ...
Suimon's user avatar
  • 153
4 votes
1 answer
115 views

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 - ...
Acsor's user avatar
  • 171
3 votes
1 answer
121 views

restoring a live tooth

I just recently have had an amalgam filling fall out from a tooth after it has been in there for at least half my life and now there is a large hole in the tooth. I don't trust dentists because I read ...
user avatar
3 votes
1 answer
142 views

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'...
Alex Hall's user avatar
  • 131
3 votes
1 answer
186 views

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 ...
A. B.'s user avatar
  • 89
3 votes
1 answer
235 views

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 ...
Jack's user avatar
  • 159
3 votes
2 answers
153 views

What is alkaline food's actual impact on internal ph regulation?

Dozens of sites throughout the internet nowadays, seemingly concerning nutrition, essentially try to convey the same message: alkaline food helps to regulate your internal pH. Having read some ...
dRyW's user avatar
  • 41
3 votes
1 answer
157 views

Are B vitamins typically sedating, stimulating, or neither?

Are B vitamins typically sedating, stimulating, or neither? I'm interested in knowing for all persons, but adults in particular. If gender plays a role, that would be good to know as well.
End Antisemitic Hate's user avatar
3 votes
1 answer
87 views

Where can I find statistics about micronutrients deficiencies in European countries?

Data from the USDA show that many US residents fail to meet adequate intakes -based on average requirement- of several micronutrients. For example only 8% of US citizens meet requirements for fiber, ...
Attilio's user avatar
  • 1,495
3 votes
1 answer
93 views

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, ...
Mathmath's user avatar
  • 209
3 votes
0 answers
35 views

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 ...
Bob Ortiz's user avatar
  • 1,039
3 votes
0 answers
66 views

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: ...
user avatar
3 votes
0 answers
43 views

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 ...
Antony's user avatar
  • 31
3 votes
1 answer
192 views

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 ...
JBentley's user avatar
  • 158