7 Healthy Foods That Are High in Vitamin D
However, up to 50% of the world's population may not get enough sun, and 40% of U.S. residents are deficient in vitamin D.
This is partly because people spend more time indoors, wear sunblock outside, and eat a Western diet low in good sources of this vitamin.
If you don't get enough sunlight, your intake should likely be closer to 1,000 IU (25 mcg) per day.
Here are 7 healthy foods that are high in vitamin D.
Salmon is a popular fatty fish and great source of vitamin D.
Whether the salmon is wild or farmed can make a big difference.
On average, wild-caught salmon packs 988 IU of vitamin D per 3.5-ounce (100-gram) serving, or 124% of the DV. Some studies have found even higher levels in wild salmon — up to 1,300 IU per serving.
However, farmed salmon contains only 25% of that amount. Still, one serving of farmed salmon provides about 250 IU of vitamin D, or 32% of the DV.
Wild salmon contains about 988 IU of vitamin D per serving, while farmed salmon contains 250 IU, on average. That's 124% and 32% of the DV, respectively.
2. Herring and Sardines
Herring is a fish eaten around the world. It can be served raw, canned, smoked, or pickled.
This small fish is also one of the best sources of vitamin D.
If fresh fish isn't your thing, pickled herring is also a good source of vitamin D, providing 112 IU per 3.5-ounce (100-gram) serving, or 14% of the DV.
However, pickled herring also contains a high amount of sodium, which some people consume too much of.
Canned sardines are a good source of vitamin D as well — one can (3.8 ounces) contains 177 IU, or 22% of the DV.
Other types of fatty fish are also good vitamin D sources. Halibut and mackerel provide 384 IU and 360 IU per half a fillet, respectively.
Herring contains 216 IU of vitamin D per 3.5-ounce (100-gram) serving. Pickled herring, sardines, and other fatty fish, such as halibut and mackerel, are also good sources.
3. Cod Liver Oil
Cod liver oil is a popular supplement. If you don't like fish, taking cod liver oil can be key to obtaining certain nutrients that are unavailable in other sources.
It's an excellent source of vitamin D — at about 448 IU per teaspoon (4.9 ml), it clocks in at a massive 56% of the DV. It has been used for many years to prevent and treat deficiency in children.
Cod liver oil is likewise a fantastic source of vitamin A, with 150% of the DV in just one teaspoon (4.9 ml). However, vitamin A can be toxic in high amounts.
Therefore, be cautious with cod liver oil, making sure to not take too much.
In addition, cod liver oil is high in omega-3 fatty acids, which many people are deficient in.
Cod liver oil contains 448 IU of vitamin D per teaspoon (4.9 ml), or 56% of the DV. It is also high in other nutrients, such as vitamin A and omega-3 fatty acids.
4. Canned Tuna
Many people enjoy canned tuna because of its flavor and easy storage methods.
It's also usually cheaper than buying fresh fish.
Canned light tuna packs up to 268 IU of vitamin D in a 3.5-ounce (100-gram) serving, which is 34% of the DV.
It's also a good source of niacin and vitamin K.
Unfortunately, canned tuna contains methylmercury, a toxin found in many types of fish. If it builds up in your body, it can cause serious health problems.
However, some types of fish pose less risk than others. For instance, light tuna is typically a better choice than white tuna — it's considered safe to eat up to 6 ounces (170 grams) per week.
Canned tuna contains 268 IU of vitamin D per serving. Choose light tuna and eat 6 ounces (170 grams) or less per week to prevent methylmercury buildup.
5. Egg Yolks
People who don't eat fish should know that seafood is not the only source of vitamin D. Whole eggs are another good source, as well as a wonderfully nutritious food.
While most of the protein in an egg is found in the white, the fat, vitamins, and minerals are found mostly in the yolk.
One typical egg yolk contains 37 IU of vitamin D, or 5% of the DV.
Vitamin D levels in egg yolk depend on sun exposure and the vitamin D content of chicken feed. When given the same feed, pasture-raised chickens that roam outside in the sunlight produce eggs with levels 3–4 times higher.
Additionally, eggs from chickens given vitamin-D-enriched feed may have up to 6,000 IU of vitamin D per yolk. That's a whopping 7 times the DV.
Choosing eggs either from chickens raised outside or marketed as high in vitamin D can be a great way to meet your daily requirements.
Eggs from commercially raised hens contain only about 37 IU of vitamin D per yolk. However, eggs from hens raised outside or fed vitamin-D-enriched feed contain much higher levels.
Excluding fortified foods, mushrooms are the only good plant source of vitamin D.
Like humans, mushrooms can synthesize this vitamin when exposed to UV light.
However, mushrooms produce vitamin D2, whereas animals produce vitamin D3.
Though vitamin D2 helps raise blood levels of vitamin D, it may not be as effective as vitamin D3.
Nonetheless, wild mushrooms are excellent sources of vitamin D2. In fact, some varieties pack up to 2,300 IU per 3.5-ounce (100-gram) serving — nearly three times the DV.
On the other hand, commercially grown mushrooms are often grown in the dark and contain very little D2.
Mushrooms can synthesize vitamin D2 when exposed to UV light. Only wild mushrooms or mushrooms treated with UV light are good sources of vitamin D.
7. Fortified Foods
Natural sources of vitamin D are limited, especially if you're vegetarian or don't like fish.
Fortunately, some food products that don't naturally contain vitamin D are fortified with this nutrient.
Cow's milk, the most commonly consumed type of milk, is naturally a good source of many nutrients, including calcium, phosphorous, and riboflavin.
In several countries, cow's milk is fortified with vitamin D. It usually contains about 115–130 IU per cup (237 ml), or about 15–22% of the DV.
Because vitamin D is found almost exclusively in animal products, vegetarians and vegans are at a particularly high risk of not getting enough.
For this reason, plant-based milk substitutes like soy milk are often fortified with this nutrient and other vitamins and minerals usually found in cow's milk.
One cup (237 ml) typically contains 107–117 IU of vitamin D, or 13–15% of the DV.
Around 75% of people worldwide are lactose intolerant, and another 2–3% have a milk allergy.
For this reason, some countries fortify orange juice with vitamin D and other nutrients, such as calcium.
Cereal and Oatmeal
Certain cereals and instant oatmeal are also fortified with vitamin D.
Though fortified cereals and oatmeal provide less vitamin D than many natural sources, they can still be a good way to boost your intake.
Foods such as cow's milk, soy milk, orange juice, cereals, and oatmeal are sometimes fortified with vitamin D. These contain 54–136 IU per serving.
Vitamin D and Calcium
Getting enough of both vitamin D and calcium is crucial to maintaining bone health and protecting against disorders like osteoporosis, a condition that is characterized by weak, brittle bones.
Children and adults aged 1–70 need approximately 600 IU of vitamin D per day, and it can come from a combination of food sources and sunlight. Meanwhile, adults over 70 should aim for at least 800 IU (20 mcg) of vitamin D per day.
The daily value (DV), a rating system used on the labels of packaged food, is 800 IU per day.
Calcium needs also vary by age. Children aged 1–8 require about 2,500 mg of calcium daily, and those ages 9–18 need approximately 3,000 mg daily.
Your body needs vitamin D to absorb calcium. This makes getting enough of both vitamin D and calcium crucial to maintaining bone health and preventing osteoporosis.
The Bottom Line
Spending time in the sun is a good way to get your daily dose of vitamin D. However, sufficient sun exposure is difficult for many people to achieve.
Getting enough from your diet alone may be difficult, but not impossible.
The foods listed in this article are some of the top sources of vitamin D available.
Eating plenty of these vitamin-D-rich foods is a great way to make sure you get enough of this important nutrient.
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By Arkilaus Kladit
My name is Arkilaus Kladit. I'm from the Knasaimos-Tehit tribe in South Sorong Regency, West Papua Province, Indonesia. For decades my tribe has been fighting to protect our forests from outsiders who want to log it or clear it for palm oil. For my people, the forest is our mother and our best friend. Everything we need to survive comes from the forest: food, medicines, building materials, and there are many sacred sites in the forest.
Map of the Knasaimos traditional lands.
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By Farah Aqel
Overthinkers are people who are buried in their own obsessive thoughts. Imagine being in a large maze where each turn leads into an even deeper and knottier tangle of catastrophic, distressing events — that is what it feels like to them when they think about the issues that confront them.
Ruminating<p>According to the late Susan Nolen-Hoeksema, a professor of psychology at Yale University, <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5796420/" target="_blank">ruminating</a> involves replaying a problem over and over in your mind. We ruminate by obsessing over our thoughts and thinking repetitively about various aspects of a past situation.</p><p>It usually involves regret, self-loathing and self-blaming. Rumination is associated with the development of depression, anxiety and eating disorders. </p><p>People prone to such patterns of thought may, for example, overanalyze every single detail of a relationship that breaks up. They often blame themselves for what has happened and are overcome with regret, with typical thoughts being: </p><p>- I should have been more patient and more supportive. </p><p>- I have lost the most perfect partner ever. </p><p>- No one will love me again.</p>
Worrying<p>Worrying is wanting to predict the future. It involves negative thoughts about things that might and might not happen.</p><p>- They'll not like me in the interview; they'll not give me the job. </p><p>- I haven't heard back from other employers. How long will I be unemployed?</p><p>These thoughts are energy-draining and distressing. They could happen to anyone under stress. But when you reach the point where your thoughts and worrying are preventing you from doing what you want to do — from living your life to the fullest — then you should take action.</p>
Catch Yourself Overthinking<p>Reuben Berger, a psychotherapist at the university hospital in the western German city of Bonn, recommends several practical steps that you could employ in your daily routine when you catch yourself worrying or ruminating.</p><p>One effective remedy, says Berger, is the <a href="https://www.uofmhealth.org/health-library/uf9938" target="_blank">thought-stopping technique.</a></p><p>"When the negative thoughts come or ruminations start, you say to yourself: 'Stop!,'" he says, adding that it is more effective when you actually say the word out loud.</p><p>He even recommends having a rubber band around your wrist to ping against yourself while saying the word. Adding a visual component by imagining a stop sign also makes the technique more powerful, he says.</p><p>The main idea here is conditioning yourself to stop the loop of worrying (making future predictions) or rumination (obsessing over past events).</p><p>Berger says the technique could take up to two weeks to take effect and that it needs to be practiced every day. "Consistency is very important," he says. </p>
Thoughts Are Just Thoughts<p>Another way of dealing with negative thoughts often used in modern therapy is realizing that thoughts aren't facts, says Berger.</p><p>He says it is important when we think something to ask: Is that real? Did that really happen? What is the worst thing that could happen?</p><p>Flight anxiety is one example where untrue thoughts are accepted as facts. Although air travel is the safest way to get around, people suffering from fear of flying accept their thoughts and fears as reality, then act upon them by refusing to fly.</p>
Mindfulness<p>Berger also recommends the use of mindfulness techniques, in which attention is paid to experiences in the moment without judging them, as a way of reducing worrying.</p><p>"Mindfulness helps you to distance yourself from your thoughts and to be more present in the moment," he says.</p><p><a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3432145/#R2" target="_blank">Several studies</a> have shown that mindfulness has a positive impact on reducing stress-related behaviors such as rumination and worrying, as focusing on the moment makes anxiety about other problems impossible.</p><p>Mindfulness can be practiced during routine activities by paying attention to your body and your surroundings. For instance, when you leave for work in the morning, you can focus on sensing the breeze, listen attentively to birds, feel the gravel under your feet and monitor your breath. </p>
Trick Your Brain Into Happiness<p>People plagued by obsessive thoughts do not always choose healthy ways like mindfulness to distract from them, however.</p><p> Dr. Edward Selby, a psychologist at Florida state university, has shown in a study that people try to avoid rumination by engaging in a range of uncontrolled behaviors, such as binge eating and substance abuse.</p><p>But he says that a much better way to overcome such distress is by distraction and shifting attention away from problems that are obsessing us.</p><p>There are many activities that can be used to distract from rumination, he says, and people should choose the one that works best for them. Here are some examples:</p><p>- Listen to music</p><p>- Read a book</p><p>- Take a hot shower</p><p>- Dance or exercise </p><p>- Talk to a friend (not about the problem)</p><p>- Watch a movie</p><p>- Mindfulness meditation</p>
Changing the Perception of Events<p>The way people perceive a situation largely influences their emotions and behavior. It is not the situation itself that determines how they feel, but rather the way they interpret it.</p><p>Reframing negative thoughts can lead to positive emotions and, subsequently, healthier behaviors — including a reduction in damaging overthinking and worrying.</p><p>Cognitive behavioral therapy (CBT) is currently a gold standard in psychotherapy. CBT aims to change the way people think and act. It largely involves challenging unhelpful beliefs or attitudes such as overgeneralization — thinking "I always fail at public speaking" when you have had one bad experience in front of an audience, for example — or "catastrophization," i.e., imagining the worst possible outcome to a situation. </p><p>A psychotherapist can teach people how to implement such thought-changing techniques into their lives. Techniques vary depending on their issues and goals.</p>
Solutions Are at Hand<p>Try to find ways of avoiding worrying, rumination and overthinking that make you feel most comfortable.</p><p>Incorporating any routine in your life when you're stressed isn't an easy task, but you can do it! If you feel overwhelmed, you can always seek professional help. </p><p><em>If you are suffering from serious emotional strain or suicidal thoughts, do not hesitate to seek professional help. You can find information on where to find such help, no matter where you live in the world, <a href="https://www.befrienders.org/" target="_blank">at this website.</a></em></p>
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By Michael Baker, Amanda Kvalsvig and Nick Wilson
On Sunday, New Zealand marked 100 days without community transmission of COVID-19.
Deaths From COVID-19 Per Million Population<img lazy-loadable="true" src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzU0ODIyOS9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTY0MjkzMDc1OX0.7Yp1h1hokihlMJUurDukGmq-Y8NJB0V-07O1ukEjGt0/img.png?width=980" id="0fe6a" class="rm-shortcode" data-rm-shortcode-id="6bce85a610aee18e2f4f1c1caca7b8a0" data-rm-shortcode-name="rebelmouse-image" />
<div id="77fff" class="rm-shortcode" data-rm-shortcode-id="ce7b34f8986d3d36bee5d4d83ac0822c"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1292270210238447616" data-partner="rebelmouse"><div style="margin:1em 0">COVID-19 Update There are no new cases of COVID-19 to report in New Zealand today. It has been 100 days since t… https://t.co/Cz55ixGZUz</div> — Unite against COVID-19 (@Unite against COVID-19)<a href="https://twitter.com/covid19nz/statuses/1292270210238447616">1596936201.0</a></blockquote></div>
Getting Through the Pandemic<p>We have gained a much better understanding of COVID-19 over the past eight months. Without effective control measures, it is likely to continue to spread globally for many months to years, ultimately infecting billions and killing millions. The proportion of infected people who die appears to be <a href="https://www.medrxiv.org/content/10.1101/2020.05.03.20089854v4" target="_blank">slightly below 1%</a>.</p><p>This infection also causes serious <a href="https://www.bmj.com/content/370/bmj.m2815" target="_blank">long-term consequences</a> for some survivors. The largest uncertainties involve <a href="https://www.nature.com/articles/d41586-020-02278-5" target="_blank">immunity to this virus</a>, whether it can develop from exposure to infection or vaccines, and if it is long-lasting. The potential for treatment with antivirals and other therapeutics is also still uncertain.</p><p>This knowledge reinforces the huge benefits of sustaining elimination. We know that if New Zealand were to experience widespread COVID-19 transmission, the <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3310086/" target="_blank">impact on Māori and Pasifika populations</a> could be catastrophic.</p><p>We have previously described critical measures to get us through this period, including the use of fabric face masks, improving contact tracing with suitable digital tools, applying a science-based approach to border management, and the need for a dedicated national public health agency.</p><p>Maintaining elimination depends on adopting a highly strategic approach to risk management. This approach involves choosing an optimal mix of interventions and using resources in the most efficient way to keep the risk of COVID-19 outbreaks at a consistently low level. Several measures can contribute to this goal over the next few months, while also allowing incremental increases in international travel:</p><ul><li>resurgence planning for a border-control failure and outbreaks of various sizes, with state-of-the-art contact tracing and an upgraded alert level system</li><li>ensuring all New Zealanders own a <a href="https://www.nzma.org.nz/journal-articles/mass-masking-an-alternative-to-a-second-lockdown-in-aotearoa" target="_blank">re-useable fabric face mask</a> with their <a href="https://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=12354409" target="_blank">use built into the alert level system</a></li><li>conducting exercises and simulations to test outbreak management procedures, possibly including "mass masking days" to engage the public in the response</li><li>carefully exploring processes to allow <a href="https://blogs.otago.ac.nz/pubhealthexpert/2020/06/16/preventing-outbreaks-of-covid-19-in-nz-associated-with-air-travel-from-australia-new-modelling-study-of-alternatives-to-quarantine/" target="_blank">quarantine-free travel</a> between jurisdictions free of COVID-19, notably various Pacific Islands, Tasmania and Taiwan (which may require digital tracking of arriving travellers for the first few weeks)</li><li>planning for carefully managed inbound travel by key long-term visitor groups such as tertiary students who would generally still need managed quarantine.</li></ul>
Building Back Better<p>New Zealand cannot change the reality of the global COVID-19 pandemic. But it can leverage possible benefits.</p><p>We should conduct an <a href="https://blogs.otago.ac.nz/pubhealthexpert/2020/06/11/five-key-reasons-why-nz-should-have-an-official-inquiry-into-the-response-to-the-covid-19-pandemic/" target="_blank">official inquiry into the COVID-19 response</a> so we learn everything we possibly can to improve our response capacity for future events.</p><p>We also need to establish a specialized national public health agency to <a href="https://blogs.otago.ac.nz/pubhealthexpert/2017/12/20/the-havelock-north-drinking-water-inquiry-a-wake-up-call-to-rebuild-public-health-in-new-zealand/" target="_blank">manage serious threats to public health</a> and provide critical mass to <a href="https://blogs.otago.ac.nz/pubhealthexpert/2020/02/05/a-preventable-measles-epidemic-lessons-for-reforming-public-health-in-nz/" target="_blank">advance public health generally</a>. Such an agency appears to have been a key factor in the success of Taiwan, which avoided a costly lockdown entirely.</p><p>Business as usual should not be an option for the recovery phase. A recent <a href="https://www.nzherald.co.nz/business/news/article.cfm?c_id=3&objectid=12353555" target="_blank">Massey University survey</a> suggests seven out of ten New Zealanders support a green recovery approach.</p><p>New Zealand's elimination of COVID-19 has drawn attention worldwide, with a description just <a href="https://www.nejm.org/doi/full/10.1056/NEJMc2025203" target="_blank">published</a> in the New England Journal of Medicine. We support a rejuvenated World Health Organization that can provide improved global leadership for pandemic prevention and control, including greater use of an elimination approach to combat COVID-19.</p>
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