Its no wonder so many of us are confused about healthy eating. Even the nations dietary experts keep changing their mind about what we should eat and what we should avoid. We asked USC School of Pharmacy Research Professor Roger Clemens to help remove some of the confusion surrounding healthy fats.
Q: What are the latest dietary guidelines regarding fat and cholesterol?
Dr. Clemens: The 2015 Dietary Guidelines Advisory Committee Scientific Report states that cholesterol is no longer a nutrient of concern. The available evidence shows no appreciable relationship between consumption of dietary cholesterol and serum cholesterol. This is consistent with the conclusion of the American Heart Association and American College of Cardiology report.
Q: Can you explain this change in thinking over the past several decades?
Dr. Clemens: Nutritional science is dynamic. In the 1980s, the Dietary Guidelines suggested consumers avoid too much total fat and saturated fat. Over time, total fat guidelines have been upwardly adjusted with the 2010 Guidelines suggesting diets with up 35 percent of daily calories from fat. The 2015 executive summary suggests no upper limit for total fat consumption. Saturated fat guidelines have similarly evolved and now suggest including up to 10 percent in a healthy diet, and replacing saturated fat with polyunsaturated and mono-unsaturated fat. This thinking may still be changing, however. Current evidence does not clearly support cardiovascular guidelines that encourage high consumption of polyunsaturated fatty acids and low consumption of total saturated fats.
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How many grams of fiber do you consume daily?
Most Americans consume half the recommended dietary intake of 25 grams (women) to 38 grams (men) of fiber daily for adults 50 years or younger. Over the age of 50, women should consume 21 grams of fiber and men 30 grams per day.
There are two types of fiber.
Soluble fiber turns to a gel during digestion. Sources of soluble fiber include oats, oatmeal, nuts, seeds, beans, peas, lentils, and some fruits and vegetables (i.e. oranges, apples, carrots).
Insoluble fiber is not digested. It adds bulk to the stool and helps food move through the stomach and intestines. Sources of insoluble fiber include vegetables, whole-grains, and wheat bran.
A diet high in fiber is connected to many health benefits.
Boosting fiber intake from whole-grain products leads to a slower build-up of arterial plaque. Studies also find soluble fiber to protect against atherosclerosis, which is this build-up of plaque in the arterial walls.
Dietary fiber also binds to LDL cholesterol during digestion, resulting in lower LDL cholesterol levels, without decreasing HDL cholesterol levels.
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The DASH (Dietary Approaches to Stop Hypertension) diet is a plan to lower blood pressure levels. This approach incorporates a diet low in saturated fat and rich in low-fat-dairy, fruits, and vegetable.
The DASH diet includes lean, unprocessed meats in appropriate serving sizes, with two or fewer servings consumed daily. One serving of meat equals three ounces. For a visual, three ounces is about the size of a deck of cards.
A study published in the American Journal of Clinical Nutrition compared the impact of lean, unprocessed pork consumption with chicken and fish as dominant protein sources within this diet plan. Researchers determined lean pork could effectively be incorporated into a DASH-style diet promoting lower blood pressure.
Keep in mind, this only applies to unprocessed lean pork, such as tenderloins or uncured ham with visible fat trimmed. Research does NOT support adding other cuts or types of pork products that are higher in fat and salt to a DASH diet promoting low blood pressure.
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Exercise is beneficial for everyone, even those who have heart disease or have had a heart attack. Regular exercise can strengthen your heart, promote quicker recovery, and reduce dependence on medication.
Heart benefits of exercise include:
However, you do need to be cautious before starting an exercise routine if you have heart disease or have had a heart attack.
Discuss with your doctor first
It’s especially important to discuss exercise with your doctor if you recently had a heart attack, are experiencing chest pain/pressure or shortness of breath, have diabetes, or recently had a heart procedure.
Some questions to ask your doctor include…
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When you are stressed your body releases stress hormones to prepare the body for “fight of flight”. This hormone release causes heart rate to increase and blood vessels to constrict. The combination leads to elevated blood pressure. With short term stress, this is a temporary rise in blood pressure that resolves itself once the stressful situation is resolved.
But what about when you live with chronic stress?
There is no direct scientific link between chronic stress and high blood pressure. However, stress is connected to many behaviors directly tied to high blood pressure and heart disease, such as consuming alcohol, lack of sleep, and overeating.
Physical activity for stress relief… but what if you don’t have time?
Being physically active is a proven method you can use to reduce stress levels. Activity triggers the brain to release “feel-good” chemicals to ease stress. Exercising and being active are also proven ways to lower blood pressure.
However, time and location may not always be conducive to employ activity to lower stress levels. Here are ten alternate techniques for reducing stress.
Include foods rich in vitamins and minerals to counteract stress, such as fresh vegetables, fresh fruits, fish, and yogurt.
This potential short term “fix” to alleviate stress can quickly turn into a long term problem.
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We all know how important it is to get your fruits and veggies in. Breakfast is a huge part of the day and healthy snacks in between are important to keep your metabolism going. If you want to get the full benefits of the delicious fruits you are eating, it is best to eat seasonally. Not only are you supporting local farmers but you get the freshest produce since they are not being frozen, packaged or shipped.
Shari’s Berries has created a chart with over 50 fruits and their peak season. Use fresh apricots in your favorite nonfat yogurt or infuse your water with blueberries. The good news is, there are a variety of options all year long.
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