The Benefits of Vitamin D and Why It's Important
Vitamin D is an essential micronutrient that plays many critical roles in maintaining overall health and wellbeing. Often called the sunshine vitamin, it can be synthesized by the skin through exposure to sunlight. It can also be obtained through certain foods and supplements.
Vitamin D supports calcium absorption and bone health. It also regulates cell growth, neuromuscular functioning and immune system activity. An estimated 1 billion people worldwide have deficient levels, so getting enough vitamin D is vital.
Vitamin D Deficiency
Some signs and symptoms indicating vitamin D deficiency include:
- Muscle weakness
- Bone pain
- Mood changes
- Fatigue
- Bone loss
- Frequent sickness and infection
Without sufficient vitamin D, bones can become thin, brittle and misshapen over time. This leads to osteomalacia in adults and rickets in children.
Deficiency also appears to be linked with increased risks for autoimmune disorders, cardiovascular disease, neurocognitive decline and certain cancers. Making sure to get adequate vitamin D is crucial.
Recommended Intake
The recommended dietary allowance (RDA) for vitamin D is:
- 400-800 IU daily for adults under age 70
- 800-1000 IU daily for adults over 70
Higher doses may be required for those with deficiency. Blood testing can confirm vitamin D levels. Speak with your healthcare provider about appropriate dosing if concerned.
Top Food Sources of Vitamin D
While sun exposure remains the best natural source, vitamin D can also be obtained through certain foods. Here are some of the top dietary sources:
Salmon
Salmon provides approximately 526 IU vitamin D in a 3.5 ounce serving. Choose wild-caught salmon whenever possible.
Herring
A 3.5 ounce serving of pickled herring contains 476 IU of vitamin D. Herring is also high in heart-healthy omega-3 fatty acids.
Whitefish
Sablefish, cod, pollock, haddock and other whitefish average 250 IU vitamin D per 3.5 ounce serving.
Tuna
Choose canned light tuna packed in water for 164 IU vitamin D per 3 ounce serving. Watch your mercury intake with tuna.
Sardines
A 1.75 ounce can of sardines contains 164 IU. Sardines offer omega-3s and bone-building calcium too.
Egg Yolks
One large egg yolk contains about 41 IU vitamin D. Whole eggs provide more compared to egg whites alone.
Mushrooms
Exposed to ultraviolet light, mushrooms can provide 100 IU per 3.5 ounces. Opt for fresh mushrooms over canned.
Fortified Milk
Cow's milk fortified with vitamin D contains about 115-124 IU per cup. Choose low-fat or nonfat versions.
Fortified Yogurt
Yogurt with added vitamin D typically provides around 80 IU per 6 ounce serving. Check labels as amounts vary.
Fortified Orange Juice
Many brands enhance OJ with vitamin D. An 8 ounce glass can deliver up to 100 IU.
A well-balanced diet including a variety of these natural sources helps meet daily needs. Supplements can fill any gaps.
The Unique Benefits of Vitamin D in Orange Juice
While not the richest source available, orange juice fortified with vitamin D offers some unique advantages:
More Absorbable
The vitamin D added to orange juice is often in the D3 cholecalciferol form, which is more readily absorbed than the D2 ergocalciferol used in some other foods.
Kid-Friendly
Getting enough vitamin D is crucial for children's growth and development. Fortified OJ is an easy way to help kids get more.
Accessible
Fortified orange juice is inexpensive, convenient to pour and drink, and widely available year-round across the U.S.
Helps Calcium Absorption
Vitamin D partners with calcium, also found in orange juice, to optimize bone density and strength.
Delicious Taste
For those who don't enjoy fish, eggs and other natural sources, juicing orange juice is an easy way to drink your vitamin D.
Selecting the Best Vitamin D-Fortified Orange Juice
When buying orange juice fortified with vitamin D, keep these tips in mind:
Check the Label
Labels indicate exactly how much vitamin D has been added per serving. Amounts range from 40-100 IU typically.
Avoid Added Sugars
Select 100% orange juice without any sugar added. Added sugars just drive up calories without benefits.
Refrigerate Promptly
After opening, store fortified orange juice in the fridge and consume within 5-7 days for best quality.
Avoid Light/Low-Pulp
Pulp removal appears to strip some vitamin D. Go for calcium and vitamin D fortified orange juice with pulp.
Check Expiration Dates
To ensure potency, dont purchase or consume fortified OJ past its expiration date stamped on the carton.
Buy in Smaller Containers
Once opened, vitamin D levels start degrading faster. Opt for cartons or bottles holding just a few servings.
Compare Brands
Look at multiple brands nutrition labels to find one within your budget that offers ample vitamin D per serving.
Who Can Benefit from Vitamin D-Fortified Orange Juice?
Drinking orange juice with added vitamin D offers advantages for:
Children
Kids need vitamin D for skeletal growth and development. Fortified OJ provides an easy dietary boost.
Teens
Rapid bone mass accumulation continues through adolescence, increasing vitamin D requirements. Juice delivers it simply.
Pregnant Women
Pregnancy spikes vitamin D needs. Fortified OJ helps women meet recommendations during this critical time.
Older Adults
Our skin produces less vitamin D as we age. Older adults often fall short and benefit from dietary sources like enhanced juice.
Those with Limited Sun Exposure
People who are homebound, live in northern latitudes or always use sunblock need more dietary vitamin D. OJ can compensate for less sun synthesis.
Individuals with Fat Malabsorption
Certain digestive disorders like celiac, Crohns and cystic fibrosis hinder vitamin D absorption from fats. Getting D from OJ avoids this issue.
People with Dark Skin Tones
Greater melanin in darker skin results in less vitamin D production from sun exposure. Fortified juice can help bridge the gap.
Consult your physician if concerned you may be vitamin D deficient. Raising levels preserves wellbeing.
Safety and Side Effects of Vitamin D
While vitamin D is generally safe, extremely high doses over 4,000 IU daily may cause adverse effects. Potential risks include:
- Hypercalcemia - elevated calcium in the blood
- Kidney stones
- Bone pain
- Nausea and vomiting
- Weakness
- Poor appetite
Routinely exceeding the tolerable upper intake level of 4,000 IU increases risk for toxicity and harm. Have your doctor monitor blood vitamin D levels if supplementing.
Otherwise, enjoying fortified orange juice as part of a healthy diet poses no concerns. Just consume calcium and vitamin D-enhanced OJ in moderation as part of an overall balanced approach.
The Takeaway on Orange Juice and Vitamin D
Vitamin D is an essential nutrient needed at all life stages for optimal health. While sun exposure remains the best source, many people can benefit from additional dietary vitamin D from fortified foods like orange juice.
When included as part of a varied diet also containing ample lean proteins, fruits, vegetables, whole grains, healthy fats and calcium-rich dairy, vitamin D-fortified orange juice helps prevent deficiency and protect wellbeing.
Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult with a healthcare professional before starting any new treatment regimen.
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