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Doctor insights on: Is Sunlight A Source Of Vitamin D

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Is sunlight a source of vitamin d?

Is sunlight a source of vitamin d?

Yes & foods: The flesh of fatty fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources. Small amounts of vitamin d are found in beef liver, cheese, and egg yolks. Some mushrooms provide vitamin d2 in variable amounts. Ready-to-eat breakfast cereals often contain added vitamin d, as do some brands of orange juice, yogurt, margarine and other food products. ...Read more

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Dr. Randy Baker
1,861 doctors shared insights

Vitamin D (Definition)

Vitamin d is a vitamin which is a kind of nutritional agent ...Read more


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How is sunlight a source of vitamin D?

How is sunlight a source of vitamin D?

Sunlight: Sunlight absorbed through the skin increases the formation of too much vitamin D under the skin and in the blood. Like anything else "too much of a good thing" is no good for anyone. In the summer you would do best to put sunscreen on as you go out in the sun. You do not want sunburn, nor do you want high levels of vitamin D. ...Read more

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Is vitamin d a type of macronutrient?

Is vitamin d a type of macronutrient?

No: Macronutrients are carbohydrates (sugars and starches), lipids (fats) and proteins. Vitamin d is none of these; it's a compound found in a few foods, but mostly made in your skin when you are exposed to sufficient sunlight. Your body uses vitamin d in many ways. Macronutrient use by your body is somewhat simpler. Carbs are for fuel. Fats are for energy storage. Proteins are building blocks. ...Read more

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What is a healthy amount of sun exposure for vitamin d production?

What is a healthy amount of sun exposure for vitamin d production?

15 minutes 3x/wk: Adequate vitamin d can be produced by sunshine exposure 3 times a week for 15 minutes each time wearing a bathing suit and without sunscreen. ...Read more

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What is the function of vitamin d from sun?

What is the function of vitamin d from sun?

You need sunlight : You need sunlight exposure to produce vit d in your body. ...Read more

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What is the quantum of vitamin d in an orange?

What is the quantum of vitamin d in an orange?

Not a D source: Oranges are not a vitamin d source. Some orange juices are fortified with a little vitamin d, but since orange juice is a fat free food, unless the you drink it with a meal containing some fat, your body can't use it. Vitamin d is a fat soluble vitamin. This means that it is absorbed by your body with fat, and if there is no fat intake with the vitamin, it won't be absorbed at all. ...Read more

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What is the best source of vitamin d beside sun rays?

What is the best source of vitamin d beside sun rays?

Vitamin D3: No foods have adequate vitamin d (though cod liver oil might be best), so the best way to insure you get enough is to take 5-10, 000 iu of vit. D3 a day. This is the dose needed by most adults to achieve optimal blood levels of 50-60. See http://bit.Ly/1dc7vna and http://bit.Ly/1ekkvkv. ...Read more

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Can time of day be important for synthesizing vitamin d from sunlight?

Can time of day be important for synthesizing vitamin d from sunlight?

Crucial: Vitamin d is synthesized from uvb rays & uvb rays only reach us when the sun is greater than 50 degrees above the horizon- that it why most americans can't make any d in the fall & winter when the sun is never that high. In summer months we can produce d best when the sun is high, usually 10-3. See http://articles.Mercola.Com/sites/articles/archive/2012/03/26/maximizing-vitamin-d-exposure.Aspx. ...Read more

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Is low vitamin d a result of cancer?

Is low vitamin d a result of cancer?

No.: Low vitamin d levels are not caused by cancer. We get vitamin d from diet and from sun exposure. Use of sun screens or avoiding sun cuts down on vitamin d production, and if the diet doesn't have enough, vitamin d deficiency can occur. This is a very common issue. The level needed to prevent osteoporosis is higher than we used to think, so what used to be called normal is now low. ...Read more

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Is there a vitamin d deficiency injection?

Is there a vitamin d deficiency injection?

Vitamin D: Probably but an injection is not necessary. Vitamin D tablets are available over the counter at low cost. 1,000 or 2,000 mg tablets daily are appropriate. ...Read more

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Which veg sources of vitamin E is the very best?

Which veg sources of vitamin E is the very best?

Wheat germ: Is the famous source of vitamin e oil. I'm not sure you would call that a vegetable though, unless you mean, vegetarian. Also, sunflower seeds, almonds, turnip greens (!), tomato paste, pine nuts, and peanut butter. ...Read more

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How low is a vitamin d reading of 4.2?

If using the same: range we use in the US, this reading is rock bottom. Typical range is between about 30-90 and optimal is about 50. Please see your doc. Many folks used 5000 K IUs to replete their vitamin D3 level. Good research to support the benefit of D3. Peace and good health. ...Read more

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What causes low vitamin d levels apart from a lack of sunlight?

What causes low vitamin d levels apart from a lack of sunlight?

Vitamin D: Usually this is genetically related. Theoretically sunshine will increase vitamin d levels but a study in hawaii showed that 50% of people with 20 hours of sunshine a week still had low vitamin d levels. You can supplement with over-the-counter vitamin d safely. ...Read more

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Is 2,000 iu of vitamin D a safe dose if I have a vitamin D deficiency?

Is 2,000 iu of vitamin D a safe dose if I have a vitamin D deficiency?

Vitamin D: Yes that dose is appropriate for a daily supplement. Just make sure you recheck your levels in a few months. You should also spend a little time in the sun, summer is coming do outdoor activities! ...Read more

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What is the cause of vitamin d deficiency in sailors?

Vit d def in sailors: It could be from both nutrtional def and lack of sunlight if the saiore are sailing in areas with low or no sunlight ( e.g. Always foggy). ...Read more

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Is sunlight a source of vitamin d?

Yes & foods: The flesh of fatty fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources. Small amounts of vitamin d are found in beef liver, cheese, and egg yolks. Some mushrooms provide vitamin d2 in variable amounts. Ready-to-eat breakfast cereals often contain added vitamin d, as do some brands of orange juice, yogurt, margarine and other food products. ...Read more

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How is sunlight a source of vitamin D?

Sunlight: Sunlight absorbed through the skin increases the formation of too much vitamin D under the skin and in the blood. Like anything else "too much of a good thing" is no good for anyone. In the summer you would do best to put sunscreen on as you go out in the sun. You do not want sunburn, nor do you want high levels of vitamin D. ...Read more

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Could fair skinned people absorb vitamin d easier from sunlight?

Could fair skinned people absorb vitamin d easier from sunlight?

Yes.: Highly pigmented skin reduces the effect of sunlight on stimulation of vitamin D production in the skin. ...Read more

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Can time of day be important for synthesizing vitamin d from sunlight?

Crucial: Vitamin d is synthesized from uvb rays & uvb rays only reach us when the sun is greater than 50 degrees above the horizon- that it why most americans can't make any d in the fall & winter when the sun is never that high. In summer months we can produce d best when the sun is high, usually 10-3. See http://articles.Mercola.Com/sites/articles/archive/2012/03/26/maximizing-vitamin-d-exposure.Aspx. ...Read more

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Please tell me what will happen if i don't get any vitamin d due to diet/no sunlight?

Please tell me what will happen if i don't get any vitamin d due to diet/no sunlight?

Vitamin D: Being low on vitamin D is an independent risk factor for major depression. Vitamin D is an important hormone for bone metabolism, so being low increases your risk for osteoporosis. Vitamin D is also important for the functioning of your immune system and being low is a risk factor for several cancers. It is critical in the operation of many genes. ...Read more

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Please help, how much potential sunlight to get regular vitamin d from 21 of vitamin d?

10 minutes: General consider vit d produced with direct sun light for 10 mins. It is important to note that protection from sun ultraviolet rays to protect skin from potential skin damage and melanoma. ...Read more

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Is vitamin d already present inside the body or do we just generate it by staying in the sunlight and eating vitamin d foods?

Produced by sunligh: It is produced by exposure to sun light, but some foods are fortified like milk.There are small quantities of vit d in salmon, mackerel, mushrooms, cod liver oil, tuna canned in water, sardines canned in oil, egg yolk, milk or yogurt, cheese and beef or calf liver. ...Read more

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Is it necessary to stay in the sunlight 30 minutes in a row to take the vitamin D that you need or you can spread them throughout the day?

Is it necessary to stay in the sunlight 30 minutes in a row to take the vitamin D that you need or you can spread them throughout the day?

Vitamin D: If you are African-American you rarely need vitamin D. If you are non-Hispanic white you don't need vitamin D during late spring and summer but later on 1000 units a day is OK. This med is inexpensive over the counter and does not need a prescription. ...Read more

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Does the skin need direct sunlight to have the vitamin D??

Does the skin need direct sunlight to have the vitamin D??

No: Direct sunlight would imply laying out or tanning. That is not necessary and exposes one to risks of melanotic skin cancers. Just being outside, at least 15 minutes a day, there is enough UVB from ambient sunlight that is reflected onto the skin to serve vitamin D activation needs. ...Read more

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Could getting more sunlight replace the need for vitamin d supplementation?

It can, but!: My sunbathers frequently have adequate d. But their skin looks older than it should and they are at higher risk for skin cancers. I would moderate sun, and I do recommend spf 30 sunscreen, and take the vitamin d3! but my answer is a qualified yes! ...Read more

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I take vitamin D and calcium every day. I'm 56 and was told when we get older the body doesn't absorb enough D from sunlight. Is this true?

I take vitamin D and calcium every day. I'm 56 and was told when we get older the body doesn't absorb enough D from sunlight. Is this true?

Measurement Required: Cannot correctly begin to control what is unknown/not measured. Healthy vitamin D3 (what counts) concentrations in the 70-80 ng/ml range. Vitamin D is not absorbed from sun. Sun tends to trigger conversion of a little cholesterol in skin cells to Vit D, then converted in liver to D2 & by kidneys & other tissues to D3. D3 impt for Ca absorption from food, bone & muscle strength + immune function. ...Read more

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What are the signs of vitamin d insufficiency? I think i may have this bcoz i always stay at home during morning and don't encounter sunlight

What are the signs of vitamin d insufficiency? I think i may have this bcoz i always stay at home during morning and don't encounter sunlight

Ill-health: About half of north americans are vitamin d deficient nowadays, largely from "healthy lifestyles" that avoid sun exposure and vitamin-d enriched dairy products. Beyond general failure to enjoy maximum energy and athletic ability, lack of vitamin d causes the bones to be soft and become injured slightly, causing unexplained body pain. Please get tested & get a little sunlight regardless. ...Read more

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Apart lack of sunlight, what causes low vitamin d levels?

Insufficient intake: There are two ways to get vitamin d. Your body makes it when you are exposed to the sun, or you can take it in your diet. Vitamin d tends to be found in fish (usually cold water) and eggs. There's some in fortified milk, but not enough. Over all, it's pretty hard to get enough from your diet unless you eat huge amounts of certain fish or take a supplement, so i recommend supplements. ...Read more

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What causes low vitamin d levels apart from a lack of sunlight?

Vitamin D: Usually this is genetically related. Theoretically sunshine will increase vitamin d levels but a study in hawaii showed that 50% of people with 20 hours of sunshine a week still had low vitamin d levels. You can supplement with over-the-counter vitamin d safely. ...Read more

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What are the causes of low vitamin d levels apart from lack of sunlight?

Sunlight: Lack of sunlight and a poor diet are two of the bigger causes of a low vitamin d level. ...Read more

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What causes low vitamin d besides no sunlight and celiac disease?

Poor diet: Inadequate dietary intake can also cause low intake. Milk is supplemented with vitamin d and is a good source of vitamin d. Try eating foods that are high in vitamin d or take a vitamin d3 and calcium supplement that has at least 400 iu of d3 and 1000-1200 mg of calcium. ...Read more

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When do I start putting my baby in the direct sunlight to help her with vitamin d and to prevent rickets?

When do I start putting my baby in the direct sunlight to help her with vitamin d and to prevent rickets?

Be careful: You are correct that the ultra violet b rays of sunlight start the production of vit d in our skin...But there are risks as well...An increase in skin cancer and melanoma. Dermatologists would probably answer..."never". My answer is do it prudently and be aware clothing and sunscreen block ultravilet b rays. The national recommendation is to supplement all infants with 400 iu of vit d daily. ...Read more

Dr. Linda DiMeglio
1,056 doctors shared insights

Calcitriol (Definition)

Calcitriol is a metabolic agent which is a kind of ...Read more