Milly Gaines
Diet plays a crucial role in managing hypertension or high blood pressure. A heart-healthy diet can help lower or prevent high blood pressure and reduce the risk of heart attack, stroke, and other health threats. The DASH (Dietary Approaches to Stop Hypertension) diet, developed by the National Heart, Lung, and Blood Institute, is a popular eating plan for hypertension. It emphasizes fruits, vegetables, and whole grains while limiting sodium, saturated fat, and sugar. In addition to the DASH diet, other dietary recommendations for hypertension include increasing fibre intake, choosing fresh over processed meats, and moderating alcohol and caffeine consumption.
| Characteristics | Values |
|---|---|
| Food to eat | vegetables, fruits, whole grains, fat-free or low-fat dairy, fish, poultry, beans, nuts and seeds, vegetable oils, lean meats, seafood |
| Food to limit/avoid | fatty meats, full-fat dairy, sugar-sweetened beverages, sweets, sodium, salt, saturated fat, alcohol, caffeine |
| Other recommendations | Use a food diary, read food labels, eat high-fibre, starchy carbs, choose low-fat dairy, limit sugar intake, eat healthy snacks, drink alcohol in moderation |
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What You'll Learn
The DASH diet
When cooking at home, try to incorporate more heart-healthy recipes, and when dining out, look for healthier options. Understanding nutrition labels can help make better food choices, and the American Heart Association has created the Heart-Check mark to make it easier to identify healthier products when grocery shopping.
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Lower sodium intake
Lowering your sodium intake is an important step in managing hypertension. Sodium encourages the body to retain fluid, which can increase the volume of blood and, in turn, raise blood pressure. It is recommended that adults consume no more than 1,500–2,000 milligrams of sodium per day.
A low-sodium diet involves limiting the amount of salt in your food. This can be achieved by reducing the amount of salt added during cooking and at the table. When dining out, request that your dish be prepared without added salt and season with black pepper, lemon juice, or other herbs and spices instead. It is also important to be mindful of hidden sodium in packaged, processed, and restaurant foods, which often contain high levels of sodium. Read food labels and look for low-sodium options when buying prepared meals, canned goods, soups, sauces, and condiments.
In addition to these specific measures, adopting a wholesome, balanced, and nutritious diet, such as the DASH (Dietary Approaches to Stop Hypertension) eating plan, can help lower sodium intake and improve overall health. This includes consuming a variety of fruits and vegetables, whole grains, low-fat dairy, fish, poultry, beans, nuts, and seeds, while limiting fatty meats, full-fat dairy, sugary drinks, sweets, and, of course, sodium.
It is important to note that reducing sodium intake is just one aspect of managing hypertension. Maintaining a healthy weight, engaging in regular physical activity, and limiting alcohol consumption are also crucial components of a holistic approach to lowering blood pressure and improving cardiovascular health.
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Avoid processed foods
Processed foods are often loaded with sodium, which is a major contributor to high blood pressure. The American diet, in particular, includes a significant amount of sodium, mostly from packaged and processed food rather than salt added at the table.
Processed deli and lunch meats, for example, are often packed with sodium due to the curing, seasoning, and preserving processes they undergo. Just two slices of bologna contain 910 mg of sodium, and a single frankfurter or hot dog also contains a substantial amount. When combined with other high-salt foods, such as bread, cheese, condiments, and pickles, a sandwich can easily become very high in sodium. Similarly, frozen pizzas are high in sodium due to the combination of their various ingredients.
To avoid excess sodium, opt for reduced-sodium, no-sodium, or no-salt-added versions of canned or processed foods. Check food labels to identify low-salt options and reduce your consumption of high-salt foods. Most of the salt we consume is already in the food we buy, such as in olives, crisps, sauces, pickles, processed meats, bread, and breakfast cereals. By limiting these foods and choosing healthier alternatives, you can effectively manage your blood pressure.
In addition to sodium, processed foods often contain high levels of sugar and saturated or trans fats, which can also negatively impact heart health. A diet high in these substances can increase calorie intake, leading to weight gain and subsequent increases in blood pressure. Therefore, it is essential to be mindful of your consumption of processed foods and opt for healthier, less processed alternatives whenever possible.
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Eat more fruits and vegetables
Eating a heart-healthy diet is important to help manage your blood pressure and reduce your risk of heart disease. The DASH (Dietary Approaches to Stop Hypertension) diet is a flexible and balanced eating plan that helps create a heart-healthy eating pattern for life. It involves cutting back on salt and loading up on fruits and vegetables.
Fruits and vegetables are rich in vitamins, minerals, and plant compounds, which can help keep your heart healthy by reducing risk factors for heart disease like high blood pressure. A 2021 study found that eating roughly 530 to 600 grams of fruit per day (about four oranges) was beneficial for blood pressure management. Researchers have linked citrus fruits, in particular, with a lower possibility of high blood pressure. Drinking orange and grapefruit juice may help reduce blood pressure, but grapefruit and grapefruit juice can interfere with common medications for lowering blood pressure, so consult a healthcare professional before adding this fruit to your diet.
Vegetables like carrots, spinach, broccoli, kale, collards, and garlic are also great for managing blood pressure. Carrots are high in plant-based compounds that may be involved in various health processes, such as managing blood pressure. A 2023 study found that the possibility of high blood pressure went down 10% for roughly every 100 grams of carrots (about 1 cup of grated raw carrots) eaten daily. Leafy greens like spinach, broccoli, kale, and collards are rich in nitrates, which help manage blood pressure. They are also a great source of potassium, which helps flush sodium out of your body and relaxes your blood vessel walls. Garlic can help boost your nitric oxide levels, which dilate blood vessels, helping to keep your blood pressure down.
In addition to fruits and vegetables, the DASH diet also recommends rounding out your meals with whole grains, fish, poultry, nuts, legumes, and low-fat dairy.
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Limit alcohol consumption
Alcohol consumption is a well-known contributing factor to hypertension. Alcohol has been shown to increase blood pressure and the risk of hypertension. It is important to limit alcohol consumption to manage hypertension effectively.
The American Heart Association recommends no more than two drinks per day for men and one drink per day for women. These limits are for people who choose to drink alcohol, and it is advised that those who do not drink alcohol should not start. Drinking alcohol in moderation is key to managing blood pressure. Excessive alcohol consumption can lead to a significant increase in blood pressure, with systolic increases almost always greater than diastolic increases.
The effects of alcohol on blood pressure can vary depending on age, sex, ethnicity, family history, and liver condition. Women tend to be more affected than men when drinking the same amount of alcohol due to their lower body weight, higher body fat, and smaller volume of distribution, which results in a faster rise in blood alcohol concentration (BAC).
Several studies have suggested a link between heavy alcohol consumption and hypertension, as well as left ventricular dysfunction and dilated cardiomyopathy. Chronic ethanol ingestion induces hypertension and is correlated with elevated tissue angiotensin II levels, which constrict blood vessels and lead to vascular injury. Additionally, alcohol stimulates the release of endothelin 1 and 2, which are also known to be potent vasoconstrictors.
It is important to note that while some studies suggest that light to moderate drinking may be associated with a reduced risk of coronary heart disease and stroke, these findings are based on observational studies, which may not provide sufficient evidence for a strong conclusion. Therefore, it is generally recommended to limit alcohol consumption to manage hypertension effectively.
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Frequently asked questions
The best diet for hypertension is the DASH diet (Dietary Approaches to Stop Hypertension). It is a flexible and balanced eating plan that includes vegetables, fruits, whole grains, lean meats, low-fat dairy, fish, poultry, beans, nuts and seeds.
If you have hypertension, it is best to avoid foods that are high in sodium, saturated fat, and sugar. This includes processed meats, fatty meats, full-fat dairy, sugary treats, and alcohol.
To reduce sodium in your diet, try keeping a food diary to track your salt intake, read labels when shopping, and choose lower-sodium options. Avoid processed, canned, and packaged foods, as they tend to be high in sodium.
Yes, including dairy products in your diet can help with lowering blood pressure due to their calcium content. Additionally, soluble fibre from oats (beta-glucans) and beetroot juice have been suggested to have blood pressure-lowering effects.
