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It’s important to control high blood pressure. It is one of the most preventable risk factors associated with stroke and dementia. Visit this website to learn more about the connection between high blood pressure, stroke, and dementia.

Bottles of supplements line the shelves at your local supermarket. These include vitamins and minerals from A to zinc. You can also find products like probiotics, herbs, and fish oil. But are they needed for good health? And what about their risks? “For most people, eating a nutritious variety of foods can provide all the nutrients they need,” says Carol Haggans, a registered dietitian and…, Who Needs Supplements?, Your body needs different amounts of certain nutrients at different times in your life. For example, the ability to absorb and process some nutrients decreases with age. So older adults may need more of certain vitamins and minerals, such as vitamin D, vitamin B12, and calcium. People who avoid certain foods may also need a nutrient boost. For example, vitamin B12 is found only in animal products…, Safety Concerns, If you take supplements, tell your health care providers. Some supplements can change how well medications work. Others have risks for specific groups of people. See the Ask Your Doctor box for questions to ask about supplements. You can track information about your supplements and medications using NIH's My Dietary Supplement and Medicine Record chart. “It’s also important to know the total…, Boosting Your Immune System, Perhaps the most common claim for supplements is that they boost your immune system. Researchers have been studying whether any can help. “Many nutrients, like vitamin C, vitamin D, vitamin E, zinc, selenium, and magnesium are important for a healthy immune system,” Haggerty says. But so far, getting more than the recommended amount of any nutrient doesn’t appear to boost the immune system.…

Do you wake up with a tired or sore jaw in the morning? It could be a sign that you’re grinding or clenching your teeth at night. Over time, this can damage your teeth and lead to jaw problems. It can cause teeth to crack, loosen, and even fall out. Teeth grinding and clenching—also called bruxism—can cause serious issues if left untreated. And people aren’t always aware that they’re doing it. “…

Excerpts from an educational webinar from NIH's Office of Dietary Supplements, featuring Dr. Paul Thomas and Ms. Carol Haggans., Dietary supplement use in the United States:, Thomas:, Americans spend more on supplements than they do on over-the-counter medications, like products for pain relief, stomach upset, allergies, and the like. One good estimate is almost $49 billion in sales in 2019. Overall, about half of adults and a third of children take one of more supplements daily, or on most days. For adults, supplement use increases with age. About a third of those [aged] 19…, How the Food and Drug Administration (FDA) regulates dietary supplements:, Haggans, : If you think about prescription or over-the-counter drugs, we expect them to work as intended and to be safe. FDA doesn’t treat dietary supplements the same. Dietary supplements are regulated as foods and not drugs. First, they’re [not approved] for effectiveness. So that means that if you take a supplement that’s marketed to help maintain [qtip:immune system|The system that protects your body…, How botanical and herbal supplements are different from vitamins and minerals:, Thomas, : There are no guideposts or recommendations for intake [for botanicals], like you have with the daily value for nutrients. So you need to get expert advice on when or if to take [a botanical] product. For most botanicals, we don’t know what the most important constituents are, or what combinations provide potential health benefits. And one company’s botanical supplement is [going to be]…, Questions to ask before taking a supplement:, Thomas, : The best advice we can give you is to talk with your health care providers before taking any supplements. Have a discussion with your doctor, pharmacist, registered dietitian, or other provider about which might be useful—or useless—to you. At the very least, let your main providers know what supplements you’re taking and why. Discuss your reasons for taking them and get their reactions. […

More than 37 million people in the U.S. are living with chronic kidney disease, or CKD. In this condition, the kidneys can’t filter blood the way they should. CKD may eventually lead to kidney failure. The most common blood test for CKD measures a protein called creatinine. Doctors use the amount of creatinine to estimate kidney function. This can affect the timing of treatments. Delaying…

Are you thinking of trying a “detox” or cleanse? They claim to help you lose weight or rid your body of toxins. After a winter of holiday eating, they might seem like a way to kickstart better habits in the new year. But are these trendy programs and products healthy or just a bunch of hype? “Detoxes” aren’t all the same. Some involve fasting, followed by eating only certain foods. You may be…

Do you need help finding a flu or COVID-19 vaccine? Vaccines.gov can help find vaccines near you. Use the search tool to find sites nearby or call 1-800-232-0233. Getting vaccinated is one of the best ways to protect yourself and your family.

Thinking about adding more physical activity to your day? Walking can be a great way to get more active. Walking is the most popular physical activity among adults, and it’s easy to see why. It requires no special clothes or equipment, and it’s free. Regular walking can have many health benefits. It may lower your risk of high blood pressure, heart disease, and diabetes. It can strengthen your…

Feeling sick can be especially concerning these days. Could your sniffles be caused by COVID-19? Or the flu? A cold? Or maybe allergies? Determining the cause of an illness can be tricky because many share some symptoms. They can leave you sniffling, coughing, and feeling tired. But there are important differences. Figuring out what’s making you sick can help you recover and prevent spreading…, Flu vs COVID-19, “Distinguishing COVID from flu can be difficult because the symptoms overlap so much,” explains Dr. Brooke Bozick, an NIH expert on respiratory diseases that affect the lungs. Flu and COVID-19 are caused by different viruses that can be spread among people. Flu is caused by the influenza virus. COVID-19 is caused by SARS-CoV-2. Both can give you a fever, cough, headaches, and body aches. Flu and…, Could It Be a Cold? Or Allergies?, Like flu and COVID-19, colds are also caused by viruses and can be passed to others. Symptoms of a cold tend to be mild. You may have a runny nose, cough, congestion, and sore throat. But you won’t usually have the aches and fever that are common with COVID-19 and flu. Often, you’ll feel better in a couple of days. There’s no cure for the common cold. Typical treatments include rest, fluids, and…, Wintery Mix of Viruses, Winter is the prime cold and flu season. You’re more likely to be indoors and closer to others when it’s colder outside. Weather also plays a role in the spread of viruses. “Cold and flu viruses survive better and are more transmissible if it’s cooler and if there’s lower humidity,” Gordon explains. Experts are concerned that flu and COVID-19 cases may increase and overlap in the winter. Flu…, Staying Well, There’s another really important way to fight viruses. “Get your flu shot and COVID-19 vaccine,” Walter advises. They are safe and effective ways to protect yourself and those around you. Don’t forget to vaccinate your children, too. That is the best way to protect their health. COVID-19 vaccines are now recommended for everyone age 5 years and older. Flu vaccines are recommended for everyone 6…, Comparing Cold, Flu, Allergies, and COVID-19, Symptoms Cold Flu Airborne Allergy COVID-19 Fever Rare Usual, high (100–102 °F), sometimes higher, especially in young children); lasts 3–4 days Never Common Headache Uncommon Common Uncommon Common General Aches, Pains Slight Usual; often severe Never Common Fatigue, Weakness Sometimes Usual, can last up to 3 weeks Sometimes Common Extreme Exhaustion Never Usual, at the beginning of the illness…

Many things can cause a bruise: minor injuries, falls, small collisions. While bruises may hurt, they’re usually harmless. But sometimes, they might be a sign of a deeper problem. If you bump part of your body hard enough, you can break tiny blood vessels under your skin. But if you don’t break the skin, the blood has nowhere to go. It gets trapped under the skin’s surface, causing a bruise. When…