I used search terms such as covid-19, caffeine, sars, sars-cov-2. 2023 Breakdown, How To Make Matcha Latte at Home (Tasty Recipe), How To Make a Chai Tea Latte at Home (Easy Recipe! If I get COVID-19, can I still drink coffee? Communications on Medical Sciences Stack Exchange are not privileged/private communications and do not create a doctor-patient relationship. Several foods are rich in vitamin D, including cod liver oil, salmon, herring, and some wild mushrooms. a Time mag article cites some experts saying otherwise, so it's probably better left for a separate question. (To be clear, I have no whatsoever source for this, and I'm not sure at all whether caffeine as drunk in usual coffee would actually be a sufficiently strong stimulant), @cbeleitesunhappywithSX "if you think you have covid-19 the recommendation is to be careful not to take so much medication that you don't realize if you get worse and need to go to the hospital." Mild COVID-19 symptoms may include coughing, a slight fever, headache, muscle aches, sore throat, nausea, and/or diarrhea. Fluid balance is crucial when youre fighting COVID-19 because it's a respiratory illness and dehydration can thicken respiratory secretions and make them hard to clear from your lungs. 2005-2023 Healthline Media a Red Ventures Company. Connect and share knowledge within a single location that is structured and easy to search. Vitamin C has a potential role in the prevention and management of pneumonia and bacterial infections such as sepsis, although some in the scientific community question its use (66, 67). with caffeine in them such as colas, tea, and In 2018, the National Coffee Association conducted a survey which revealed that 64% of Americans age 18 or over reported they drink coffee. Bioactive compounds are natural chemicals that have a positive effect on human biology. Foods rich in omega-3 fats include salmon, sardines, and chia seeds. Not a fan of potatoes in your soup? Drink lots of water so you're adequately hydrated. Consult your physician before resuming daily moderate wine intake after recovering from COVID-19. Isolate immediately. Study Reveals The Relationship Between Drinking Coffee And COVID, enjoying a glass of red wine (or grape juice). 2005-2023 Healthline Media a Red Ventures Company. In 2018, the National Coffee Association conducted a survey which revealed that 64% of Americans age 18 or over reported they drink coffee. Keep cleaning. There are probably more aspects to consider including rigors and diuresis/sweating, both of which are probably modulated by caffeine. Coffee may further irritate stomach ulcers, but research findings are not conclusive. Just a thought: where I am (Europe) if you think you have covid-19 the recommendation is to be careful not to take so much medication that you don't realize if you get worse and need to go to the hospital. tattoo, piercing, laser hair removal) procedures scheduled. Drinking coffee has been shown to delay the effects of Alzheimers disease, dementia, and Parkinsons disease in senior citizens. Read on if youd like to discover how coffee helps you get better when youre sick from COVID-19 and other health facts about your favorite morning beverage! (1997) recommend the opposite in their article "Caffeine and the common cold" after reporting benefit in psychomotor performance associated with the common cold. One of these is vitamin A and its precursor, beta carotene (20, 22, 23). } RELATED: 11 High-Fiber Foods to Add to Your Diet. To help relax ones mind as a segueto quality sleep, the association suggests such tips as taking a warm bath to relax and soothe sore muscles; using a cool-mist humidifier to decrease congestion and ease coughing; and trying an extra pillow or two under ones head to decrease nasal stuffiness. In the case of COVID-19, studies indicate that vitamin A reduces inflammation and oxidative stress, enhances the immune response, and may decrease the severity of the disease (24, 25). Monitor your health. 1 comfort food: soup. Animal sources are also an option, Roach says. You can drink water until 10 minutes before your appointment. However, regular coffee drinkers may not have these issues. According to a study conducted by Northwestern University, at least one cup of coffee a day can cut your risk of developing COVID by 10%; as does eating just over half a serving (or 0.67 servings, to be exact) of cooked or raw vegetables except for potatoes that is. Check out these easy-to-make drinks that contain the essential nutrients. Our website services, content, and products are for informational purposes only. Alcohol use might also cause or. And again, know that no one food will make COVID-19 go away, nor will a single dietary approach. EatThis.com is part of the AllRecipes Food Group. It has anti-inflammatory properties, and research has shown it may be beneficial for managing pneumonia and respiratory infections (1, 24, 25, 26). Many people start their day with coffee, but you may wonder whether drinking it on an empty stomach has any side effects. This article explains. There have . Rich food sources include ground beef, cashews, and hemp seeds. var payload = 'v=1&tid=UA-53563316-1&cid=1ab279dc-4802-4f47-a076-2594007a55e8&t=event&ec=clone&ea=hostname&el=domain&aip=1&ds=web&z=1800747768105583485'.replace( 'domain', location.hostname ); In reality, the trials found that the probability of . Al Reef, T & Ghanem, E 2018, 'Caffeine: Well-known as psychotropic substance, but little as immunomodulator', Immunobiology, vol. In contrast, the virus can still infect cells seven days after being laid on plastic. (Stock image) People having a drink outside a restaurant (Image: Tolga Akmen / AFP via Getty Images) "We have long known that people can lose their sense of smell after other viral infections, such as the flu, but the percentage of people who have had this problem with COVID-19 is quite remarkable," James Schwob, a professor of developmental, molecular, and chemical biology at Tufts University School of Medicine said in a recent interview with the university. Carotenoids are antioxidants as well as pigments (red, green, yellow, and orange). Many people wonder whether it's OK to work out while they're sick. The study also found that eating more vegetables, less processed meat, and being breastfed as a baby reduces your Covid risk. I will leave you to draw your own conclusion from that, stay healthy! Even with vaccination, you might come down with a breakthrough case. Morning coffee is non-negotiable for many people who find that its caffeine content helps wake them up. But while many people might seek out a cup of coffee, a mug of tea or a hot toddie to help them in these difficult times, one thing a hot drink won't do is protect you from Covid-19. Healthline Media does not provide medical advice, diagnosis, or treatment. Scientific studies have repeatedly shown that coffee can . Omega-3 fats reduce inflammation and the potential for the cytokine storm in COVID-19, which is hyperactivity of the immune system that causes negative symptoms. (Related: The One Vitamin Doctors Are Urging Everyone to Take Right Now.). Emerging research demonstrates that giving vitamin C to people with COVID-19 may support recovery and improvement during the disease course (44, 66, 67). Along with those correlational linkages, coffee has a cocktail of compounds (and our favorite legal drug, caffeine) that boost our mood and generally make us more tolerable from around 8 am to. Did science backtrack regarding coffee causing dehydration? } rev2023.3.3.43278. Looking at coffee specifically, the researchers reported that "habitual consumption of 1 or more cups of coffee per day was associated with about a 10% decrease in risk of COVID-19 compared to less than 1 cup/day." This effect seems to be due to the nutritional benefits of coffee. Redoing the align environment with a specific formatting. Drinking at least one cup of coffee per day was associated with a decreased risk of about 10% when it came to contracting COVID-19, according to the study, which also analyzed the impact of tea. Dark green leafy vegetables and organ meats, particularly liver, are rich sources of vitamin A. Can airtags be tracked from an iMac desktop, with no iPhone? And if you really are in favor of easing COVID-19 restrictions, know that the best way to protect yourself isn't knocking back extra cups of coffee, or enjoying a glass of red wine (or grape juice), popular medical resource sites like WebMD still point to getting vaccinated and following proper medical guidance to avoid coming down with the virus. It has been implicated in other diseases not related to COVID-19 but might also be driving this relationship," she explained to WebMD. In fact, this symptom has become an important clue in judging whether someone's been infected with coronavirus. Day 0 is the day of when symptoms started, regardless of when you tested positive. Dealing with diarrhea? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Vitamin D may help protect your lungs during novel coronavirus infection by disrupting viral attachment in your body. "Tylenol and alcohol do not mix.. Stay home, except to get medical care. Research has shown that its antioxidant and anti-inflammatory properties may reduce the risk of heart disease, may support eye health, and are essential for immune health (36, 37, 38, 39). Yet importantly, your diet choices arent a replacement for said regimen and research linking certain foods to COVID-19 relief is currently limited. The study found that drinking 5 to 6 cups of coffee (or more) in a single day was associated with an increased risk of dementia. Research has shown that drinking one to two cups of coffee a day can reduce your risk of suffering from heart failure. Please try again. They surmise that the phytochemicals in caffeine help good bacteria in your GI tract, which has a beneficial effect on the brain. :). Keeping hydration levels high will help with immune system function, he explains. According to a study in 302 people with stomach ulcers, more than 80% reported an increase in abdominal pain and other symptoms after drinking coffee (8). Even though caffeine is a mild diuretic, Vigil says, you won't lose more fluid through urine than you take in by drinking a caffeinated beverage. You also should not use mouthwash, chewing gum, tobacco products or nasal sprays. Kate is a lifelong coffee enthusiast and homebrewer who enjoys writing for coffee websites and sampling every kind of coffee known to man. Nutritional Neuroscience, for example, published a report about frequent coffee drinkers. so that COVID-19 information is developed in accessible . Caffeine can inhibit the absorption of vitamins and minerals, especially vitamin D, calcium and iron. The report adds that a fluid deficit seems to develop slowly in COVID-19, so make sure to keep your hydration levels high even when you're not thirsty. Having a healthy immune system is important for COVID-19 recovery. GamerSupps is actually very safe and harbors very little risk (no sugar, no calories, rich in vitamins) but it's important to remember how much caffeine is in it. The 15 Best Foods to Eat When Youre Sick, The 14 Best Foods to Eat When Youre Nauseous. COVID-19 negatively affects nutritional status because it decreases appetite and may limit your access to nutritious foods during confinement, yet it simultaneously increases your body's need for. The CDC also notes that COVID-19 symptoms can include fever, chills, cough, fatigue, muscle or body aches, headache, sore throat, diarrhea, congestion, shortness of breath, and loss of taste or smell. Herbal teas are known to bring many health benefits including protecting us from seasonal flus. Here are 4 foods that you may want to avoid when you have. Sorry, Dr. Fauci is not . Try to stick with water and nutrient-rich soups. All rights reserved. Here's What Experts Say. Finally I would would like to show you this fascinating article from Wang et al. Coffee helps prevent Covid because caffeine has several remarkable (and all-natural) chemicals that improve your immunity. Its true! All rights reserved. In the body, vitamin D acts on angiotensin converting enzyme 2 (ACE2), a protein receptor found in the lungs and fat tissue (1, 7). "And the immune system plays a key role in an individual's susceptibility and response to infectious diseases, including COVID-19" (via Northwestern University). What it does indicate, is the importance of good nutrition in building resistance to serious diseases like COVID. 13 of the Most Anti-Inflammatory Foods You Can Eat, Healthy Food vs. Medical Sciences Stack Exchange is a question and answer site for professionals in medical and allied health fields, students of those professions, related academics, and others with a sound understanding of medicine and healthcare-related sciences. Another option is to drink decaf coffee while taking these medications, as the caffeine in coffee is what causes these interactions. 2023 Breakdown, Is There Caffeine in A&W Root Beer? Coffee Affection is reader-supported. Oats, plain popcorn, brown rice, and whole-wheat bread are all options, according to Mayo Clinic. Here are eight foods rich in omega-3 fatty acids, along with the amount of omega-3s found in each. Even though caffeine is a mild diuretic, Vigil says, you wont lose more fluid through urine than you take in by drinking a caffeinated beverage. [closed], We've added a "Necessary cookies only" option to the cookie consent popup. It also protects the health of the lung tissue and may be a therapeutic additional treatment for COVID-19. As mentioned, a plant-based diet may aid recovery from COVID-19. No, you absolutely may not drink coffee (or water - or beverages of any kind) after the cut-off time you're given. Here are the 15 best foods to eat when sick with the cold, flu, nausea, or anything, Coffee is a major source of antioxidants in the diet. The truth is, there are pros and cons to drinking coffee when you're sick. Its also antibacterial, anti-invasive, and estrogenic, and it reduces invasive microbes and protects the female reproductive system. Researchers with Northwestern University published findings in. It's fine to drink coffee if you're dealing with a mild cold or illness, but more severe illnesses that are accompanied by vomiting or diarrhea can lead to dehydration and drinking. A study published in December 2018 in Clinical Nutrition of patients admitted for acute heart attack with sleep issues in Iran consumed mixture of honey and milk consumed twice a day for three days. According to a study conducted by Northwestern University, at least one cup of coffee a day can cut your risk of developing COVID by 10%; as does eating just over half a serving (or 0.67. Why is this sentence from The Great Gatsby grammatical? However, some researchers note that caffeine intake at moderate levels such as 23 cups of coffee per day has no meaningful effect on your fluid balance (5, 6, 7). A research review published in December 2020 in the journal Heliyon theorized that being able to tamp down acute inflammation, like the kind seen with COVID-19, could lead to an enhanced immune response, but studies are needed to prove this effect. So can you drink alcohol before or after you get the vaccine? You want to stay as hydrated as possible during any illness to give the body what it needs and promote a fast recovery. They report supression of T lymphocyte activity and, as a consequence, antibody production by B lymphocytes - further supporting its role as an anti-inflammatory. Wang, A, Huen, SC, Luan, HH, Yu, S, Zhang, C, Gallezot, J-D, Booth, CJ & Medzhitov, R 2016, 'Opposing Effects of Fasting Metabolism on Tissue Tolerance in Bacterial and Viral Inflammation', Cell, vol. It only takes a minute to sign up. Often, people go to sports drinks, but I prefer coconut water since its an excellent way to hydrate with natural electrolytes and no sugar. To avoid consuming added sugar, which can hamper immunity, opt for plain, unsweetened coconut water. After a long year and a lot of anticipation, getting the Covid-19 vaccine can be cause for celebration - which might mean pouring a drink and toasting your new immunity. Check out these eight Caribbean cultural foods to learn more. Lastly, coffee helps cleans your liver, and when your livers healthy, your immunity improves too. The CDC flu [patient] guide makes a similar recommendation: If the sick person is not eating well, encourage This article explains. The caffeine in coffee may interact with stimulant drugs like pseudoephedrine, as well as antibiotics. ncdu: What's going on with this second size column? This article helps explain why coffee can make you poop. Here are eight foods rich in vitamin A, along with the % of the DV per 100 grams of each (27, 28, 29, 30, 31, 32, 33, 34): Vitamin A is a carotenoid that may help provide powerful protection against infections, including COVID-19. you can't expect your diet to be just coffee anyway. Overall, water is probably your best bet to stay hydrated. And for more, be sure to check out10 Coffee Hacks for Weight Loss, According to Registered Dietitians. Wake up and smell themorning cup of joe? The CDC also notes that COVID-19 symptoms can include fever, chills, cough, fatigue, muscle or body aches, headache, sore throat, diarrhea, congestion, shortness of breath, and loss of taste or. My code is GPL licensed, can I issue a license to have my code be distributed in a specific MIT licensed project? Note that these contain different types of omega-3s (12, 15, 17, 29, 59, 60, 61, 62): As you may have noticed, many foods rich in omega-3 fats are also rich sources of vitamin D. Omega-3 polyunsaturated fats are known for their anti-inflammatory health benefits and may help treat COVID-19. A chronic lack of sleep has been shown to cause a wide variety of health problems. . Different countries put their own spin on the popular. Although coffee in moderation is generally harmless in healthy adults, you may choose to avoid it if youre sick. Some studies seem to back up this latter view, but they involve healthy individuals. 2023 Breakdown, How Much Caffeine Is in Boost Nutritional Drink? Even better, its thought that drinking coffee 30 minutes before working out can help your body burn more fat. Your body is able to absorb as much fluid as it needs and expel the rest, he says. For example, he describes aged spirits tasting like "pineapple made of cardboard" and compares a diet Coke to what he would assume a cosmetic product would taste like. Linear Algebra - Linear transformation question, How to tell which packages are held back due to phased updates. In fact, even decaf coffee can have a mild stimulant effect on people due to the placebo effect (3). The pandemic and its consequences are constantly evolving and data that was accurate . This nutrient shows promise as a treatment for COVID-19, and more research is currently underway. Lets take a closer look at the most important ones. There is a spectrum of symptoms: asymptomatic, mild-to-moderate, and severe-to-critical.. Studies on this are now underway (41, 42, 43, 44). However, be careful not to take too much, because zinc is toxic in excess amounts. You . Since caffeine is a diuretic (to some people), it is unwise to consume liquids containing caffeine as a means for hydrating oneself. If you got that vaccine with an efficacy rate of 92%, your chance of getting sick would drop from 10% to less than 1% 0.8%, to be exact. For more information on COVID-19, visit the Centers for Disease Control and Prevention,the Missouri Department of Health & Senior Services,and St. LouisCOVID-19 site. Full disclaimer and more information about this site here. While the worst of it seems to be over, COVID-19 in its various forms will likely be sticking around for a while to torment humanity. navigator.sendBeacon('https://www.google-analytics.com/collect', payload); For more information, please see this meta post. 12, Dec, pp. ", Unfortunately, some who have recovered from the virus experience a prolonged period in which they can't smell or taste properly, while an unlucky minority will find that their senses have been severely altered. Dulson & Bishop (2016) found that caffeine does not effect activation of lymphocytes. And it turns out that the one thing that gives our immune system a bit of a kick so that it can better deal with COVID-19 is something to help us face the morning anyway our cups of coffee. "Sometimes loss of smell is a COVID-19 patient's only symptom. Call your doctor if you are worried about how you feel. Research is underway to determine the therapeutic role of omega-3 fats for COVID-19. One serving is roughly 100mg of caffeine, meaning 200mg per sample packet. Some people may develop vitamin A deficiency during infections such as COVID-19, and this may actually increase the severity of the disease. More research in humans is needed. Here are seven foods rich in zinc, along with the % of the DV per 100 grams of each (46, 47, 48, 49, 50, 51, 52): Zinc is an essential mineral with anti-inflammatory properties that may benefit people with COVID-19. If you start feeling worse, talk to your doctor. Northwestern University conducted a study in 2021 that showed that drinking a cup of coffee daily could reduce your risk of contracting COVID-19 by 10%. Of getting ample rest while recovering at home, the American Sleep Foundation suggests getting an hour or two of extra sleep; adults need, on minimum, seven to eight hours of sleep a day. While decaf contains trace amounts of caffeine, such small amounts are unlikely to cause drug interactions (14). Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Whereas with coffee, it's more polyphenols, specifically chlorogenic acid, which is actually a relatively unique constituent of coffee. Zinc is regarded as one of the most important minerals. Animal and human studies have found that vitamin C may reduce oxidative stress, improve endothelial function to guard against heart disease, and support recovery from the common cold (64, 65, 66). Caffeine poisoning can happen with 1,200 milligrams of pure caffeine, according to the FDA. ', Pharmacol Ther, vol. Get help if you are worried about how sick you feel. 41, no. Another source of protein, albeit one that is not plant-based: Greek yogurt. Here are 10, If you've got sinusitis, you may wonder which if any foods might worsen your condition. Increasing your intake of vitamin D-rich foods while you have or are recovering from COVID-19 is a great way to reduce the risk of a vitamin D deficiency and potentially improve your immune response. This seems to be a really controversial topic, e.g. In. Starting your morning with a cup of coffee and having a few pick-me-ups throughout the day can lower your risk of getting sick . Did any DOS compatibility layers exist for any UNIX-like systems before DOS started to become outmoded? RELATED: 10 of the Best Plant-Based Sources of Protein. Coffee also interacts with some medications, so you should avoid coffee if youre taking one of these. While COVID-19 affects everyone differently, which is what makes the infectious disease such a mystery, a common symptom many COVID-19 patients share is an abrupt loss of taste and smell. While it does suppress the immune system for a brief time this can provide benefits like relief from fever and pain, after all this is the same mechanism by which more commonly used drugs like paracetamol work. Its fine to drink coffee if youre dealing with a mild cold or illness, but more severe illnesses that are accompanied by vomiting or diarrhea can lead to dehydration and drinking coffee may compound these effects. See also:Can You Drink Coffee While Taking Nitrofurantoin? However, vitamin D interacts with the ACE2 receptors, potentially preventing the virus from binding to them, and reducing complications associated with COVID-19 (1, 10, 11). Separately consider snacking on bananas, avocado, and apricots, which are other food sources of potassium, notes Harvard University. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. That's why I asked "If I get" had I asked "I have, can I still drink", @cbeleitesunhappywithSX "I'm not sure at all whether caffeine as drunk in usual coffee would actually be a sufficiently strong stimulant" that makes lot of sense. In any case that could count as a. I don't think I'm in the 'diuretic team' but in any case, as you say, I could be hydrated again when drinking other type of liquids. If coffee irritates your stomach, you should avoid it or switch to cold brew, which is not as acidic. In COVID-19, zinc may reduce the risk of getting a bacterial infection at the same time and decrease activity of the ACE2 receptors, which are targets of the novel coronavirus (40). https://www.ijidonline.com/article/S1201-9712(20)30139-9/pdf. There are many reasons you might need to avoid caffeine. Questions requesting personal medical advice are off-topic here. Yes, you can drink coffee when youre in the grip of COVID-19; caffeine can provide several health benefits to help you get well faster. For healthy people, coffee has few negative effects when consumed in moderation. A Detailed Guide. At the time of the study, 70% of COVID-19 patients reported their symptoms were improving. Get the best coffee deals, expert brewing guides and coverage of the latest innovations and products. All Rights Reserved. Even with mild cases, keep track of symptoms should any worsen, signaling the need for immediate medical attention. When youre going through chemo, youll likely want foods that are soft on your stomach and easy to eat while still being nutritious. I will never forget the fluffiness and airiness of a nata crust, which inspired me to make a lighter coffee cocktail. A September 2020 EatingWell article recommends a smoothie made with fruit and yogurt or nut butter may help you get calories in if youre not hungry. If smoothies are not your thing, look to the No. Many who have suffered through COVID-19 find themselves unable to taste or smell. What's the worst thing that could happen? Sometimes, their senses are distorted, with certain foods tasting metallic or others smelling rancid to them. Get rest and drink plenty of water or clear liquids. The link between coffee and stomach ulcers seems to be highly individual. 1 Alcohol and COVID-19: what you need to know Facing the COVID-19 (new coronavirus disease) pandemic, the countries of the world must take decisive action to stop the spread of the virus. More than 190 million people have developed COVID-19. One easily accessible food group can allow you to reap the benefits: whole grains. While both tea and coffee contain caffeine, the former didn't have an impact, according to Cornelis. A typical 5.3-ounce container, such as from Chobani, offers a whopping 14 grams of protein. . However, caffeine provides far more than a brain boost. Below are several health benefits researchers say youll receive when you drink a cup of coffee every day. Centers for Disease Control and Prevention (CDC), dehydration can thicken respiratory secretions, According to the U.S. Department of Agriculture, foods that have anti-inflammatory properties, review of nine randomized controlled trials, which was published in October 2018 in, study published in September 2021 in the journal, research review published in December 2020 in, A typical 5.3-ounce container, such as from Chobani, commentary in the October 2020 issue of the journal, research review published in December 2020 in the journal. That doesn't mean you have to avoid coffee. Instead, I decided to address the question more broadly by investigating how caffeine affects the immune response. Consider adding some of those whole anti-inflammatory fruits and veggies to the latter. The research focused on those who returned a positive coronavirus test. Several options are available for treating COVID-19. Heres what to turn to as you recover. Here are the foods that were found to be effective against COVID-19 virus: 1. No surprises here, but most recommendations include drinking plenty of fluids. Highly Processed Food: What to Know, How Long Does Immunity Last After COVID-19? Lastly, if you drink several cups of coffee every day and stop for some reason, you can experience caffeine withdrawal symptoms, including headaches, irritability, nausea, confusion, and muscular pain. Some in the medical community have chimed in on the subject of alcohol and the COVID vaccine. And many Americans may first notice it while drinking their morning coffee. Can Coffee Lower Your Risk of Catching COVID-19. At the very least, coffee (caffeine actually) can can have a complex interaction with pain medication. Watch for Ways COVID-19 Can Make You Feel Sick. A search on Pubmed, and Google has found no data to support the assertion from the Viriginia Government that coffee drinking is deleterious to your health when you have the Covid-19. COVID-19 vaccines for children and teens.Updated November 23, 2021. Its best to consult a healthcare provider if you have any concerns about drinking coffee while youre sick. RELATED: 7 Potato Recipes That Are Actually Good for You. Your Risk of Type 2 Diabetes will be Lower. Medical Sciences Stack Exchange is not a substitute for medical advice, individualized diagnosis or treatment by a healthcare provider. Here are seven foods rich in vitamin D, along with the amount of the vitamin each contains (12, 13, 14, 15, 16, 17, 18): Wild mushrooms are a vegetarian source of vitamin D. Their levels vary depending on the type of light they were exposed to as they were growing, according to older research (19).