Nutrition
Walnuts a key food to improve metabolism
A daily handful of walnuts – and especially in addition to some other healthy foods – may help to offset some of the impacts of the junk-food diets too often consumed by millions of people, new research suggests.
A daily handful of walnuts – and especially in addition to some other healthy foods – may help to offset some of the impacts of the junk-food diets too often consumed by millions of people, new research suggests.
A study done with mice and just published in the Journal of Nutrition found that consumption of walnuts, a known health-boosting food rich in omega-3 fatty acids, had a particular ability to improve the metabolisms of obese mice that were fed an unhealthy, high fat, high-sugar diet.
Adding other healthy whole foods from plants, like raspberries, cherries or green tea, made the effects even more significant.
Neil Shay, in the College of Agricultural Sciences at Oregon State University, said further study is needed, but the findings suggest that eating modest helpings of walnuts together with other whole foods could help lower a person’s risk of heart disease and diabetes.
The mice’s diet was the equivalent of the cheeseburger-fries-and-soda diet that’s contributing to rising obesity among humans, said Shay. Another group of mice received a regular low-fat diet as a control. The study was funded by the California Walnut Commission.
Shay and his team reported that mice eating walnuts had more of the “good” inflammation-reducing fatty acids in their blood at the end of the nine-week study, and much less fat in their livers, than mice that ate the high-fat diet alone.
“Walnuts alone had a good effect when they were part of the high-fat diet,” Shay said. “But adding some of the other foods produced additional benefits,” such as boosting the levels of anti-inflammatory compounds in the mice’s blood by as much as 50 percent, and reducing levels of pro-inflammatory compounds.
These health benefits occurred at a reasonable level of consumption, said Shay—the human equivalent of about one and a half servings a day. And the mice didn’t have to slim down. The walnut-fed mice ate just as many calories as their non-walnut-eating counterparts, and they didn’t lose weight.
Walnuts are a good source of alpha-linolenic acid, or ALA, an omega-3 fatty acid that the body needs for normal growth and development. Several studies have suggested that eating foods rich in ALA helps lower risk of heart attack and stroke.
The other foods Shay and his team tested—raspberries, apples, cranberries, tart cherries, broccoli, olive oil, soy protein and green tea—contain other plant chemicals known to benefit human health. The researchers fed each of these, in powdered form, to one of eight subgroups of the walnut-fed mice.
The walnut-fed group as a whole had better scores on key indicators of metabolic health. They had better glucose tolerance, a measure of how efficiently the body uses sugar. Poor glucose tolerance is a precursor to Type 2 diabetes. The mice that got walnuts and also raspberries, apples or green tea had the best glucose-tolerance scores.
The walnut-fed mice also had significantly higher levels of high-density lipoproteins, or HDLs – the so-called good fats – in their blood than those on the high-fat diet alone, and had generally lower levels of the “bad” low-density lipoproteins, or LDLs. The mice that ate walnuts plus cranberries, tart cherries, broccoli, olive oil or soy protein showed the biggest improvements over the non-walnut-fed mice.
When the researchers looked at fat in the liver, they found that the walnut-fed mice had half the liver fat as the mice on the high-fat diet alone. The mice that ate walnuts plus broccoli or green tea had even less fat in their livers. The livers of these mice were nearly as healthy as those of mice in the low-fat control group, Shay said.
The walnut-fed mice also had higher levels of heart-healthy polyunsaturated fatty acids in their livers, and lower levels of the fatty acids that trigger inflammation. In addition, the fat globules in the livers of the walnut-fed mice were smaller than in the livers of the high-fat-fed mice. Bigger fat globules signal a condition called steatosis, in which fat accumulates within liver cells, distorting their structure and impairing their function.
“Even though we did this study in mice and not in humans,” said Shay, “I think it’s safe to say that if you include a serving of walnuts and one or more of these other foods in your daily diet, it would do no harm and might have beneficial effects.”
Nutrition
Fruity fuel for everyday
Help your kiddos stay energized for each school day (including those dreaded homework hours) with nutritious snacks that prioritize hydration.
School days bring excitement for students with classroom fun, exploration of new subjects, time with friends and extracurricular activities like sports and clubs. They also mean hectic schedules for families, especially parents looking to keep nutrition top of mind in spite of jam-packed weeknight calendars.
Help your kiddos stay energized for each school day (including those dreaded homework hours) with nutritious snacks that prioritize hydration. As a satisfying sweet treat thanks to its taste and nutritional value, watermelon provides a year-round solution to rehydrate as part of simple, kid-friendly meals and snacks.
Sweet watermelon, salty cottage cheese and pops of berries make this Watermelon Berry Fruit Salad with Cottage Cheese hard to top after a long day in the classroom. A sprinkle of fresh mint is a perfect final addition to this after-school treat.
Or for an easy, fast, no-mess meal that can be prepared for homework sessions or taken as a lunchbox treat, look no further than Watermelon Kebabs. Just cube watermelon, turkey breast and cheddar cheese and thread on coffee stirrers or beverage straws then share with your loved ones while tackling dinner and prepping for the next day of learning.
Any way you slice it, watermelon is a nutrient-dense food you can feel confident stocking in your kitchen and feeding to your family. It provides 21 grams (8% of the recommended daily value) of natural carbohydrates and is especially energizing when paired with protein like cottage cheese or turkey for a balanced snack.
Plus, with just 80 calories in two cups, it’s a high-volume food that can fill you up at mealtime. Once you’ve enjoyed the delicious watermelon flesh, make sure to avoid waste by using the rind in recipes like stir fries or salads, or encourage little ones to get creative with watermelon rind crafts to let their creativity shine.
Find more school year snacks and meals by visiting Watermelon.org.
Watermelon Berry Fruit Salad with Cottage Cheese
Recipe courtesy of the National Watermelon Promotion Board
Watermelon
1 package raspberries
1 package strawberries
1 package blueberries
1 package blackberries
1 container cottage cheese
1 bunch mint leaves
honey, to taste (optional)
Cut watermelon with star-shaped cookie cutter or into cubes.
In large bowl, mix watermelon with raspberries, strawberries, blueberries and blackberries. Add dollops of cream cheese on top of fruit.
Garnish with mint leaves and drizzle with honey, to taste, if desired, prior to serving.
Watermelon Kebabs
Recipe courtesy of the National Watermelon Promotion Board
Servings: 6
18 seedless watermelon cubes (1/2 inch each)
6 cubes smoked turkey breast
6 cubes cheddar cheese
6 coffee stirrers or beverage straws
Thread cubed watermelon, cubed turkey and cubed cheese on stirrers or straws.
NewsMakers
Get smart about your heart
From regular checkups and reducing stress to eating well – including heart-healthy snacks like grapes – and exercising regularly, these simple steps can help boost your heart health.
A crucial component of overall well-being, heart health can be a barometer for living a long, healthy and happy life. Because heart disease is the leading cause of death in the US, according to the Centers for Disease Control and Prevention, taking steps to reduce your controllable risk factors – including poor diet, stress and inactivity – can set you on the right path.
From regular checkups and reducing stress to eating well – including heart-healthy snacks like grapes – and exercising regularly, these simple steps can help boost your heart health.
Know Your Numbers
Knowing key health metrics such as blood pressure, cholesterol levels, blood sugar levels and body mass index can help you and your health care provider identify potential risks early. Schedule annual checkups and discuss any concerns you may have about your heart health. Early detection and risk factor management can reduce the likelihood of developing heart disease.
Eat More Fruits and Vegetables
Incorporating a variety of colorful fruits and vegetables into your diet can ensure you get a broad range of vitamins, minerals, fiber and antioxidants, all of which contribute to a healthy cardiovascular system. For example, leafy greens like spinach and kale are high in potassium, which helps manage blood pressure. Fresh grapes contain 7% of the daily recommended intake of potassium, are a good source of vitamin K and are also a natural source of beneficial antioxidants and other polyphenols, including flavonoids, that can help relax blood vessels and promote healthy circulation. Some studies also suggest grapes have a beneficial impact on blood lipids and more.
In fact, one study found women who consumed 1 1/4 cups of grapes every day benefited from reduced blood triglyceride levels, LDL cholesterol levels, inflammatory proteins and other markers of heart disease.
Bright, juicy and bursting with flavor, Grapes from California can be enjoyed by the handful or blended with rich bananas, tangy Greek yogurt and a hint of almond in The Great Grape-Acai Smoothie Bowl for a delicious blend of fruity flavors at breakfast, lunch or snack time – it not only tastes great, but supports a healthy heart.
Get Moving
Regular physical activity is one of the most effective ways to improve heart health. Exercise strengthens the heart muscle, improves blood circulation and helps maintain a healthy weight. Aim for at least 150 minutes of moderate-intensity aerobic exercise per week, as recommended by the American Heart Association, such as walking, jogging or swimming with strength training exercises like lifting weights or using resistance bands mixed in to help reduce the risk of heart disease and improve overall cardiovascular health.
Manage Stress
Consider your stress level: chronic stress can negatively impact heart health, increasing blood pressure and other risk factors for heart disease. Techniques such as deep breathing, meditation, yoga and regular physical activity can help manage stress levels and maintain a healthy heart. Additionally, taking time to engage in hobbies, spending time with loved ones and ensuring adequate sleep are stress-reducing activities that improve overall well-being and heart health.
To learn more about the heart-health benefits of grapes, and find additional heart-friendly recipes, visit GrapesFromCalifornia.com.
The Great Grape-Acai Smoothie Bowl
Servings: 1
1/2 cup red Grapes from California, fresh or frozen
1/2 banana
1 frozen acai fruit pack (3 1/2 ounces)
1/2 cup plain, nonfat Greek yogurt
1/4 teaspoon almond extract
Topping:
1/4 cup sliced red Grapes from California
1 tablespoon sliced, toasted almonds
1 tablespoon pepitas
1 teaspoon chia seeds
In small blender, combine grapes, banana, acai, yogurt and almond extract; process until smooth.
Pour into bowl and top with sliced grapes, sliced almonds, pepitas and chia seeds.
Nutritional information per serving: 420 calories; 19 g protein; 63 g carbohydrates; 12 g fat (26% calories from fat); 2.5 g saturated fat (5% calories from saturated fat); 5 mg cholesterol; 45 mg sodium; 8 g fiber.
Nutrition
Eat your greens and skip the sugar spikes
Cruciferous vegetables like broccoli and kale could help with the management of blood sugar levels, particularly for people at risk of type 2 diabetes and cardiovascular disease (CVD).
New research by Edith Cowan University (ECU) has found evidence that cruciferous vegetables like broccoli and kale could help with the management of blood sugar levels, particularly for people at risk of type 2 diabetes and cardiovascular disease (CVD).
PhD student Ms Emma Connolly investigated whether cruciferous vegetable intake improved glycaemic control (blood sugar control) compared to root and squash vegetables in non-diabetic adults with elevated blood pressure.
In a randomised, controlled, crossover trial, participants consumed four serves per day of either cruciferous vegetables (broccoli, cabbage, cauliflower, kale) or root and squash vegetables (carrot, potato, pumpkin, sweet potato) with lunch and dinner meals for two weeks.
“Our participants wore glucose monitors throughout the study, so that we were able to measure blood sugar levels continuously throughout each two-week period,” Ms Connolly said.
“We found that, when participants consumed the cruciferous vegetables, they had less variable blood sugar levels compared to when they consumed the root and squash vegetables. We also noted that these participants had a smaller spike in sugar levels after the meals. A central goal of blood sugar control, particularly for people with diabetes, is to smooth out spikes and reduce variability in blood sugar levels throughout the day. Stable blood sugar, with minimal peaks and less fluctuations is associated with better overall health and wellbeing.”
Ms Connolly said further research is essential to fully understand the underlying mechanisms driving these findings, as well as to explore the broader clinical implications.
“Continued investigation will be crucial to determine how these vegetables can be effectively incorporated into dietary recommendations for improved blood sugar regulation and overall health management,” she said.
Poor glycaemic control is estimated to occur in 541 million individuals worldwide. Ms Connolly noted that dysregulated glucose control increases the risk of type 2 diabetes and subsequent CVD and has a substantial societal impact.
The total cost attributed to type 2 diabetes with CVD is projected to exceed AUD$18.7 billion in Australia alone by 2031.
“Less than 1 in 15 Australian adults meet vegetable intake recommendations. Even more concerning is that cruciferous vegetables are among the least consumed vegetables. Adding vegetables like broccoli, kale, bok choy, gai lan, and cabbage to your meals most days could make a big difference to your health,” Dr Lauren Blekkenhorst said.
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