Hey there! Have you heard about the sunshine vitamin? That’s vitamin D – an essential nutrient that keeps your bones strong, boosts your immunity, and does so much more for your health.
In this article, we’re going to dive deep into everything you need to know about getting enough vitamin D on the daily. From how much you actually need and where to find it, to the health perks you can expect and any potential risks. My goal is to make this info super clear and helpful for ya!
So grab your sunglasses and let’s get soaking up some D!
What Exactly Is Vitamin D And Why Do We Need It?
Alright, first things first – what is vitamin D anyway?
Well, it’s technically a hormone, not a vitamin. I know, it’s confusing because it’s got the word “vitamin” in its name. Let’s break this down…
A vitamin is a substance your body can’t make enough of on its own. It needs to get vitamins through food. But with vitamin D, your body can actually produce it itself after exposing your skin to sunlight. So funky vitamin-hormone hybrid thing going on here!
Now onto why we need it…
Vitamin D has TONS of important jobs in your body. We’re talking:
- Building strong bones by helping you absorb calcium.
- Keeping your immune system in fighting shape.
- Regulating cell growth.
- Reducing inflammation.
- And so much more!
Without enough D, you’re at risk for:
- Weak, brittle bones.
- More colds and infections.
- Higher chance of developing certain cancers, heart disease, diabetes, and autoimmune disorders.
So yeah, pretty critical stuff here! No wonder it’s called the sunshine vitamin. We literally need sunshine to make this powerful health booster inside our bodies.
Let’s explore exactly how that works next…
From Sunbeams To Vitamin D: How Your Body Makes This Nutrient
Alright, time for Vitamin D Making 101! Here’s the simple 2-step process:
Step 1: Your skin soaks up UVB rays from sunlight. This kickstarts vitamin D production in your skin cells.
Step 2: Your liver and kidneys wrap up the process by converting the vitamin D into its active hormone form.
And BOOM – just like that, sunshine turns into a vital nutrient for bone health, immunity, and beyond!
Now for some specifics…
The UVB rays that trigger vitamin D production typically peak at midday. So aim for getting a little sunshine between 10am-3pm if possible. How much sun you need can vary a LOT depending on factors like:
- Skin tone – The more melanin (pigment) you have, the more sun is needed because melanin slows vitamin D production.
- Time of year/location – Less vitamin D-producing UVB rays reach farther north/south of the equator in winter months.
- Pollution/clouds – More barriers between you and direct sunlight slow the D-making.
- Age – Our skin gets less efficient at converting sunlight into vitamin D as we get older.
- Sunscreen – SPF stops the skin from making vitamin D while it screens UV rays.
For fair-skinned folks, 10-15 minutes of midday sun on your arms and legs a few times a week is typically enough. But darker skin can need 30+ minutes to generate the same amount!
The point is – when it comes to sun and vitamin D, we all have unique needs. So take your specific factors into account rather than going by blanket time recommendations.
Alright, almost ready for some vitamin D sources. But first, let’s quickly tackle…
How Much Vitamin D Do You Actually Need And Why?
I know you’re probably wondering, “Yeah this vitamin D stuff sounds great, but how much of it do I actually need to stay healthy?”
Excellent question! Here are the latest vitamin D recommendations from top health organizations:
Recommended Vitamin D Daily Intake
| Age Group | IU (International Units) |
| 0–12 months | 400 IU (10mcg) |
| 1–13 years | 600 IU (15mcg) |
| 14–18 years | 600 IU (15mcg) |
| 19–30 years | 600 IU (15mcg) |
| 31–50 years | 600 IU (15mcg) |
| 51–70 years | 600 IU (15mcg) |
Pregnant/breastfeeding folks are also encouraged to take 600 IU of vitamin D per day.
But why these amounts?
Well, 600 IU is typically enough to maintain healthy blood levels of vitamin D for most people. And higher doses like 800-1000+ IU are often suggested for seniors, people with dark skin living in cold climates, or those with conditions causing vitamin D absorption issues because they have higher needs.
Ultimately though, there’s debate around the “perfect” dose for everyone. Blood tests showing your personal vitamin D levels can provide more customized intake guidance from your doc. We’ll get into how to test later!
For now, let’s explore where you can score some D…
Top 5 Dietary Sources Of Vitamin D
Alright folks, time for the lineup of vitamin D all-stars!
Here are the best natural food sources to help you meet your daily needs:
- Fatty Fish – We’re talking salmon, tuna, mackerel. A 3-ounce cooked portion contains about 450 IU vitamin D.
- Fish Liver Oils – Just a teaspoon of cod liver oil packs 450 IU.
- Egg Yolks – One yolk contains around 40 IU.
- Fortified Foods – Milk, orange juice, cereal, yogurt. Check labels for amounts, typically 100 IU per serving.
- Mushrooms – Exposed to UV light to boost vitamin D before harvesting. About 130 IU per 3 ounces.
There ya have it! Seafood and sunshine-fed mushrooms are your best whole food bets for getting enough of the nutrient. Liver oils and vitamin D-fortified foods can help fill any gaps too.
Now let’s dive into why vitamin D is so darn good for us…
Health Perks You Can Expect From Getting Enough Vitamin D
Alright folks, prepare to have your mind blown about how getting enough of the sunshine vitamin can transform your health!
Here’s a highlight reel of the top benefits well-researched by science:
- Stronger Bones – Vitamin D improves calcium absorption to prevent bone-thinning osteoporosis. Research shows 800-1000 IU daily reduces fracture risk by 20-30% in seniors!
- Immunity Boost – Getting plenty of the D prevents colds/flu and can reduce respiratory infection risk by 40%!
- Chronic Disease Protection – Higher vitamin D intake is tied to lower risks of heart disease, diabetes, multiple sclerosis, and certain cancers.
- Better Balance – Senior citizens getting enough vitamin D experience fewer dangerous falls because it strengthens muscles and bones.
- Happier Mood – Studies link low D to depression and seasonal affective disorder (SAD). Supplements may help reduce symptoms.
- Longer Life – Research reveals vitamin D boosts life expectancy and may help you live longer by protecting against chronic diseases.
So by filling your vitamin D tank, you could add years to your life AND life to your years with a stronger, healthier, happier you!
But I know what you’re thinking…
“What if I’m someone who just doesn’t get much sunshine?” “Do I need to just chug fish oil and eat mushroom pizza every day?!”
Great questions! Let’s tackle vitamin D supplements next…
Should You Take A Supplement?
Alright friends, raise your hand if you’re someone who:
- Works indoors 9-5.
- Lives far north with long, dark winters.
- Covers all exposed skin before going outside.
- Has dark brown/black skin.
- Rarely eats fatty fish.
If your hand is up, then YES – you very likely need to supplement with vitamin D!
Research shows certain groups have extremely high rates of deficiency:
- Office workers – a whopping 83% are low!
- Northern folks – Up to 90% don’t get enough vitamin D in winter.
- Darker skinned people – Their extra melanin blocks vitamin D production.
So supplements (especially vitamin D3) are crucial for getting these groups enough on a regular basis when sunshine and food sources fall short!
“But how much vitamin D should my supplement have?”
Another fab question! Here’s your cheat sheet:
- 600-800 IU vitamin D3 capsules or tablets are ideal for maintaining healthy levels long term. This matches the recommended daily intake.
- Higher potency supplements like 2000-5000 IU dosage may be prescribed by your doctor if you have very low blood levels that need quick replenishing or have absorption issues interfering with your intake meeting your needs.
I suggest having your vitamin D blood level tested if possible to know whether you need a maintenance or treatment dose. We’ll get into how to test next!
“What if I take a multivitamin already…is the vitamin D in it enough?”
Maybe, maybe not! Many multis contain 400-600 IU vitamin D. So read your label – if it has 600+ IU combined with vitamin D-rich foods in your diet, it could be plenty to meet your needs.
Okay, let’s switch gears and talk testing…
Get Your Levels Tested!
Alright folks, time to talk testing your vitamin D levels!
This is super important because standard reference ranges often don’t reflect the latest research around ideal vitamin D numbers for health and performance.
Here’s a quick overview:
- 25(OH)D blood test – Measures circulating storage form to determine your status.
- 30-60ng/ml (75-150nmol/L) – General target range, but some do best above 50ng/ml.
- 125 nmol/L indicates potential toxicity risk if consistently too high.
- Ask your doctor for the specific test above to get your number!
Once you know your current vitamin D status, you and your doc can determine whether you need more sun/food sources or could benefit from supplements to boost you into ideal ranges. Re-testing every 3-6 months allows you to monitor your levels and finely tune your dosage for your needs over time too.
Alrighty, we’ve covered a TON so far. Let’s recap the key points before diving into any risks…
Let’s Recap! Key Vitamin D Takeaways So Far
We’ve covered a lot of ground getting to know the sunshine nutrient! Here are the top takeaways about getting your vitamin D daily intake:
- Your body can make vitamin D when your skin is exposed to UVB sunlight. Aim for 10-15 minutes per day at midday depending on your skin tone and location.
- 600 IU daily from sun, foods and/or supplements meets needs for most adults. Up to 2000 IU may be prescribed if deficient.
- Fatty fish, liver oils, egg yolks, UV-exposed mushrooms and fortified foods are top dietary sources.
- Vitamin D powers stronger bones/immunity, may help prevent chronic diseases, balance mood, and support longevity.
- Get tested! Blood levels between 30-60ng/ml are an ideal target to aim for.
Okay, we’ve got a solid D download so far. But no nutrient is perfect. So let’s balance things out covering potential risks…
Watching Out for Too Much of A Good Thing
Alright folks. I know after learning about all the amazing benefits, it’s tempting to wanna megadose on the sunshine vitamin and double or triple up on your daily dose!
But as much as we’d love for vitamins to be miracle workers that can simply take in mass quantities for even GREATER effects, it unfortunately doesn’t work that way. With fat soluble vitamins like D, there CAN be a thing as too much of a good thing.
So let’s quickly protect your health (and maybe your wallet from pricey super-doses!) by covering key vitamin D toxicity tidbits…
What Happens if You Get Too Much Vitamin D?
Potential problems include:
- Nausea, vomiting, poor appetite.
- Stomach pain.
- Constipation.
- Kidney injury.
- Bone/joint pain.
- Confusion.
- Irregular heartbeat.
- Unhealthy calcium buildup.
Scary stuff! Luckily true vitamin D toxicity is rare. But it’s good to understand safe limits…
Don’t Exceed 4,000 IU Daily From ALL Sources!
According to leading health orgs, the Upper Tolerable Limit is 4,000 IU per day for adults. Unless prescribed MUCH higher doses to quickly correct deficiency, avoid routinely exceeding this amount from sun, foods, AND supplements combined.
Blood levels consistently over 150 ng/ml (375 nmol/L) are the red flag danger zone for toxicity in those not being actively treated for deficiency. Retesting can prevent levels creeping too high over time. Of course, individual responses vary hugely. So keeping an eye on your overall symptoms with check-ins on your status is smart!
Key Groups To Be Extra Cautious With High Doses
- Infants/children – Their tiny bodies are sensitive! Keep kids under age 1 ONLY at 400 IU dosage.
- Seniors – Absorption issues make toxicity likelier. Do not exceed 4,000 IU.
- People with heart/kidney conditions – These organs regulate vitamin D, so problems here increase sensitivity.
- Medication interactions – Vitamin D can interact with corticosteroids, anticonvulsants, antifungals, HIV treatment, and more! Run supplements by your pharmacist.
Whew, alrighty folks! Now that we’ve covered both the glorious benefits AND the key cautions around vitamin D, let’s wrap up with some common questions…
Vitamin D FAQs
Let’s tackle some frequently asked vitamin D questions in quickfire style!
How Much Vitamin D Should I Take If I'm deficient?
Start with 2000 IU vitamin D3 daily for 3 months, then retest levels. Many need 4000-10,000 IU temporarily to replenish stores.
Is Vitamin D2 Or D3 Better?
D3 (cholecalciferol) is the preferred form. Research shows it's more effective at raising blood levels than plant-sourced D2 for most people.
Can I Get Too Much Vitamin D From The Sun?
Nope! Extended sun exposure allows vitamin D production to plateau. Just watch for burns, especially with sunscreen limiting synthesis.
How Long Do Vitamin D Supplements Take To Start Working?
Initial blood levels boost can show in just 1-2 weeks! But it takes 2-3 months to fully build up tissue stores, with effects improving over time.
When’s The Best Time To Test My D Levels?
Testing in early spring will reveal winter lows. And testing in fall shows summertime highs from sunshine to determine your yearly range.
Can I Get All The D I Need From The Sun?
Maybe! Fair skinned individuals near the equator with regular UVB exposure might get enough through skin alone. But for most people, food/supplement sources are also needed.
And there you have it folks! The complete download on getting your daily vitamin D.
Hopefully now you feel confident soaking up some sunshine, grabbing those fish oil capsules, and testing your levels to keep this powerhouse nutrient working hard for your health!
As always, chat with your doctor about any concerns and for personalized recommendations based on your lifestyle and health factors. But use the foundations here as your starting point for joining me in welcoming vitamin “D-light” into your routine!
Alright friends, that wraps up all my vitamin D details for ya! Let me know if you still have any other questions. And don’t forget to stay smiley soaking up some rays! Catch ya later!
More Details On Vitamin D’s Role In Bone Health
As I mentioned before, vitamin D is crucial for building strong bones by helping your body absorb bone-strengthening calcium. Let’s take a deeper dive into the research connecting vitamin D and bone health.
Studies make clear that low blood levels of vitamin D are a major risk factor for bone loss and fractures. Older adults with a vitamin D deficiency have up to a 2x higher chance of breaking a hip or other bone compared to those with sufficient levels!
Now, how exactly does vitamin D pull this off?
Well, when vitamin D circulating in your bloodstream reaches your small intestine, it activates a protein responsible for transporting calcium from your food into your blood. Without enough vitamin D present, only 10–15% of calcium gets absorbed. But with an adequate vitamin D level, absorption can reach 30–40%!
Once calcium makes it into circulation from vitamin D’s help with absorption, here’s what happens:
- It’s deposited into bones to strengthen and densify them.
- Muscles also utilize calcium to enable contraction and movement.
- Nerves get coated with a calcium sheath for proper conductivity.
So you can see why a short circuit anywhere along this chain thanks to low D causes problems!
Without the vitamin D-driven calcium absorption, you end up leeching precious mineral stores out of your bones just to allow basic muscle and nerve functioning. Over months and years, this leads to porous, fragile bones prone to fracturing and osteoporosis.
The fascinating part? Research now shows it’s not just calcium levels or bone density testing, but vitamin D status itself that most strongly predicts future fracture rates!
83% less fracture risk
For example, a 6-year Finnish study of over 3,000 people found vitamin D blood concentrations alone explained a whopping 83% of the difference in fracture risk among groups! The more deficient they were, the more likely they experienced broken bones, regardless of bone density or calcium intake.
Pretty mind-blowing how a single test result for a cheap nutrient can tell you more about your future fracture odds than expensive scans or looking at calcium alone, right?
This demonstrates how optimizing your levels acts as THE protective umbrella minimizing your risk for osteoporosis and broken bones as you age. So don’t underestimate the importance of checking your vitamin D status!!
Alright, let’s keep rolling with more intel on vitamin D’s many benefits…
Vitamin D’s Role In Cancer Prevention
Beyond stronger bones and immunity, one of vitamin D’s most exciting health connections is with CANCER!
As a super quick cancer primer – at any given moment, a small percentage of your cells become mutated and risk multiplying out of control into cancerous tumors. Vitamin D helps regulate cellular life cycles and keep this unhealthy rapid growth in check.
The research backing up vitamin D’s anti-cancer effects is remarkable:
- Getting enough vitamin D is associated with an astounding 50-90% lower risk for colorectal, breast, and prostate cancers!
- One analysis of over 63,000 people found every 10 ng/ml bump in vitamin D blood levels equals a 5-15% drop in tumor risk – across many types like lung, ovarian, and bladder.
- Boosting levels from deficient to sufficient ranges can translate to preventing 230,000-250,000 cancer deaths worldwide annually according to researchers!
And not only can vitamin D slash your odds of developing tumors in the first place – it also improves survival if you DO receive a cancer diagnosis!
Multiple studies demonstrate things like:
- Colon cancer patients with highest vitamin D intakes live 2-5x longer than those with the lowest intakes.
- Breast cancer patients doubling their vitamin D levels (say from 10ng/dl to 20ng/dl) reduces death risk by an incredible 60-80%!
This effect is so profound that correcting deficiency after diagnosis leads to just as much benefit. So even if you already have a tumor growing, restoring your vitamin D supply hampers its spread and ups your odds of remission and long term survival.
Pretty mind-blowing information, right?
And it seems this breakthrough anti-cancer action stems largely from vitamin D’s ability to regulate erratic cellular growth while supporting normal healthy cell life cycles. Plus D enhances apoptosis – the body’s natural self-destruct sequence to kill defective pre-cancerous cells.
So not only can this nutrient slash your risk of ever developing cancer in the first place – even once you have it, D offers powerful protection against aggressive spreading and death!
And the benefits don’t end there…
Let’s keep exploring vitamin D’s many gifts!
Vitamin D For Brain Health And Mood
You may be surprised to learn vitamin D plays a major role in keeping your brain healthy, mood upbeat, and critical thinking sharp as a tack as you age!
Let’s start with vitamin D battling one of the most terrifying conditions out there – dementia. Out of the 50 million dementia sufferers worldwide, 60-70% are caused by Alzheimer’s disease. And research demonstrates vitamin D helps prevent this memory-destroying disorder.
Now onto how it pulls this off…
For starters, vitamin D receptors are present throughout the hippocampus and frontal cortex – areas critical for cognitive skills like memory formation and information processing. So when D directly interacts with brain cells themselves, it offers protection.
Vitamin D also clears the brain of amyloid plaques. These sticky abnormal protein clumps are a hallmark finding clogging up the brains of Alzheimer’s patients. By blocking plaque formation and degrading already accumulated clusters, D preserves neurons’ ability to communicate and function normally.
Plus it acts as a powerful anti-inflammatory within brain tissue. Chronic inflammation is known to heavily contribute to dementia progression. So by putting out fires, vitamin D provides a brain-saving assist!
Vitamin D vs Alzheimer
What does the research say about vitamin D fighting Alzheimer’s risk and progression?
Glad you asked!
- Getting just 800 IU of vitamin D daily is linked to 4-5x lower odds of Alzheimer’s compared to 200 IU or less.
- High intake slashes amnesia-related brain shrinkage by half.
- Boosting low D levels in elderly dementia patients preserves cognition and enhances daily living abilities, keeping independence for years longer!
And mood-wise, correction of vitamin D deficiency shows great promise minimizing depression.
In placebo-controlled clinical trials of folks with depressive symptoms:
- Vitamin D slashes rates of major depressive disorder by over 50% vs the placebo group!
- Supplementing cuts depressive mood scores by approximately one third.
- Getting D from sunlight matches results too – UV lamp therapy improves mood as powerfully as supplements!
So you can see why adequate vitamin D is critical for keeping your marbles in tip-top shape, your outlook rosy, and quality of living high!
And there are even MORE benefits where that came from…
Let’s keep ’em coming!
Additional Health Perks Of Adequate Vitamin D
Man oh man, we are just scratching the surface of all vitamin D has to offer! Let’s rapid-fire some more ways getting enough can transform your health:
Autoimmune Disease: Vitamin D calms an overactive immune system and tames inflammation implicated in conditions like multiple sclerosis, IBS or Crohn’s disease, lupus, and rheumatoid arthritis. Getting 2-4000 IU slashes future onset risk significantly.
Heart Health: By lowering inflammation, blood pressure, cholesterol counts while improving insulin sensitivity and blood flow, vitamin D protects against atherosclerosis and cardiovascular events.
Diabetes: Getting sufficient vitamin D reduces odds of developing diabetes by over 50%! For type II diabetics already diagnosed, D supplementation enhances insulin secretion for better blood sugar control.
Infections: Getting adequate D strengthens immune cells’ ability to make germ-fighting proteins and antibodies. This enhances resistance against frequent ear infections, colds, flu, etc. 800 IU daily cuts risk by 40%!
Infertility/Pregnancy: Vitamin D boosts progesterone to lengthen luteal phase, supports implantation, and reduces odds of miscarriage. Plus infants need enough in utero to properly develop lungs, brain, and bones.
Longevity: Ensuring adequate vitamin D intake protects against all major diseases and adds precious years of life! Sufficient seniors live longer than their deficient peers.
WOW! Is there anything vitamin D can’t do?!
Next let’s go over the intricacies of testing…
Nailing Down Your Vitamin D Testing
I want to zoom in a bit more on getting your vitamin D levels tested correctly. This is critical for determining your current status and dialing in your ideal dosage.
Here are key testing tips:
- Ask for “25-hydroxyvitamin D” aka 25(OH)D. This is the most accurate measurement of what’s circulating from sun, food and supplements. Make sure your doc orders specifically.
- Get tested early spring and late fall. Spring reveals if you dipped over winter, fall shows peak summer level from UV rays. Provides range.
- Don’t rely on “normal” thresholds. Many labs say 30-100 ng/ml is “normal.” But 50-80 ng/ml is optimal for health per leading vitamin D experts. Push higher in range.
- Get familiar with conversion math. European labs use nmol/L units instead of ng/ml. To convert: Just multiply ng/ml x 2.5 = nmol/L.
- Set a test reminder on your calendar. Re-testing every 3-6 months allows you to catch downward trends before you drop too low.
See why pinpointing and tracking your number matters so much? Testing clues you into how much D you’re making through sun and diet. This helps determine if extra may be useful from food or oral vitamin D supplementation.
Targeting 40-60ng/ml 25(OH)D blood levels charts you on course for an avalanche of renewing benefits…
While avoiding detriments like weakened bones and immunity seen under 30ng/ml. Testing grants you that bird’s eye view!
Okay, let’s keep going with more FAQs…
Additional Vitamin D Questions
Let’s tackle a few more common vitamin D questions folks often have:
Do I Need Vitamin K2 With Vitamin D supplements?
Great question! Yes, adding vitamin K2 alongside D is smart. Vitamin K2 helps shuttle calcium deposited by D into bones rather than arteries for heart health. 100-200 mcg daily is plenty.
Don't Some Medications Deplete Vitamin D?
Correct! Anti-seizure meds, oral steroids like prednisone, anti-cholesterol drugs, weight loss pills, HIV meds, antacids...LOTS interfere with D absorption and metabolism. Re-test levels every 6 months if you take any.
Why Do Seniors Need So Much More Vitamin D?
As we age, skin becomes less efficient at producing D from sunlight. The kidneys also downgrade the conversion of D into its active hormone form. Plus diet quality declines for some. So high-potency D with calcium keeps aging bones resilient!
What's Better - Pills, Chewable Or Liquid Vitamin D?
Tablets or capsules are typically best absorbed and tolerated. But chewable D supplements or liquid drops can be great options for those with digestion issues interfering with pill breakdown. Try different kinds if one type upsets your tummy!
How Long Do The Benefits Of Vitamin D Supplementation Last After Stopping?
This depends on how long you took it and your level achieved - but rest assured your efforts DO offer lasting rewards! Research shows bone density gains and lowered diabetes risk persist for years if you optimized levels around 50 ng/ml. But seasonal drops or deficiencies may start creeping downwards again within 3-6 months of ceasing year-round D3, so consistency is key!
Alrighty folks, that about wraps up all my big vitamin D download details for ya today! Let me know any other lingering questions. Stay healthy!
Back to TheHealthySupps page.
References
- Endocrinol Metab Clin North Am. (2017) – Biology and Mechanisms of Action of the Vitamin D Hormone. Published online 2017 Sep 29. doi: 10.1016/j.ecl.2017.07.001
- Int J Mol Sci. (2022) – A Single Oral Vitamin D3 Bolus Reduces Inflammatory Markers in Healthy Saudi Males.Published online 2022 Oct 9. doi: 10.3390/ijms231911992
- Sci Rep. (2021) -Air pollutants are negatively associated with vitamin D-synthesizing UVB radiation intensity on the ground.Published online 2021 Nov 2. doi: 10.1038/s41598-021-00980-6
- NIH (2023) – Vitamin D. Fact sheet for health professionals.
- J Steroid Biochem Mol Biol. (2007) – An Evaluation of the Vitamin D3 Content in Fish: Is the Vitamin D Content Adequate to Satisfy the Dietary Requirement for Vitamin D?Published online 2007 Jan 30. doi: 10.1016/j.jsbmb.2006.12.010
- Osteoporos Int. (2013) – Effect of oral cholecalciferol 2,000 versus 5,000 IU on serum vitamin D, PTH, bone and muscle strength in patients with vitamin D deficiency. 2013 Mar;24(3):1101-5. doi: 10.1007/s00198-012-1944-7. Epub 2012 Mar 16.
- NIH (2019) – Seasonal affective disorder.
- Bone Rep. (2018) – 10 years of 25-hydroxyvitamin-D testing by LC-MS/MS-trends in vitamin-D deficiency and sufficiency. Published online 2018 May 23. doi: 10.1016/j.bonr.2018.05.003
- Front Endocrinol (Lausanne). (2018) – Vitamin D Toxicity–A Clinical Perspective. Published online 2018 Sep 20. doi: 10.3389/fendo.2018.00550
- JAMA Netw Open. (2019) – Vitamin D and Calcium for the Prevention of Fracture. Published online 2019 Dec 20. doi: 10.1001/jamanetworkopen.2019.17789
- Am J Public Health. (2006) – The Role of Vitamin D in Cancer Prevention. 2006 February; 96(2): 252–261.
doi: 10.2105/AJPH.2004.045260 - Alzheimers Dement (Amst). (2023) – Vitamin D supplementation and incident dementia: Effects of sex, APOE, and baseline cognitive status. Published online 2023 Mar 1. doi: 10.1002/dad2.12404
