How to improve heart health
Foods
Heart-healthy diet
Your diet has a profound effect on your organs and body functions, and your heart is no exception. The nutrients found in the food you eat plays a critical role in the maintenance of overall health, and when it comes to the health of your heart – research shows that there are specific foods that we need to be eating more of, and some that we are best to avoid.
Of all macronutrients in the diet, fats tend to get a bad rep. But what is less known about fats is that there are several types, and some are incredibly beneficial for our health (particularly, our heart health). Fats can be broken down into 3 main categories – saturated fats, unsaturated fats and trans fats.
Saturated fats are found in foods like butter, cheese, meat and other dairy products. Eating too much saturated fat can increase LDL cholesterol, and it has long been recommended to avoid this type of fat to reduce your risk of heart health complications. While the degree of risk is still up for debate, keeping saturated fats to a minimum continues to be a strong recommendation by health care practitioners across the board.
Monounsaturated fats have been consistently highlighted in studies to support cardiovascular health in more ways than one. Foods rich in monounsaturated fats include nuts and seeds, avocado, nut butter and olive oil. Under the heart-healthy umbrella of monounsaturated fats falls polyunsaturated fats, which are also known as ‘essential fats' because the body can’t manufacture them so we must obtain them from food. Foods rich in polyunsaturated fats include fatty fish, chia seeds, flaxseeds and walnuts.
According to the AHA, both monounsaturated and polyunsaturated fats support cardiovascular health by reducing LDL cholesterol and triglycerides, reducing the risk of cardiovascular health events and providing the essential fatty acids that the body can’t manufacture on its own.
While there is some debate surrounding the different types of fats and how much to eat, there is a universal agreement when it comes to artificial trans fats – which is that they should largely avoided if you want to protect your heart health. Artificial trans fats can be found in fried foods, vegetable oils, shortening, and margarines. Processed foods are the greatest source of trans fats because they contain high amounts of partially hydrogenated vegetable oils. Even small amounts of trans fats can increase the amount of LDL and reduce the amount of HDL cholesterol in the bloodstream, so it’s recommended to steer clear of these where you can.
Cholesterol
Cholesterol is a type of lipid that is produced naturally by the liver. It’s crucial for many process including the formation of cell membranes, hormone production vitamin D synthesis. There are two main types of cholesterol, LDL (or “bad”) cholesterol and HDL (“good”) cholesterol.
LDL is known as the “bad” type of cholesterol because it carries cholesterol to your arteries, increasing the risk of cholesterol build up along the artery wall. When this happens, it creates a ‘cholesterol plaque’ that can narrow the arteries and limit blood flow, increasing the risk of blood clots. In contrast, healthy levels of HDL cholesterol can divert cholesterol back to the liver and help lower the risk of blood clots and the complications that may follow.
Sodium
Sodium is an electrolyte that plays an important role in fluid balance, but too much of this mineral has been linked to increased blood pressure and increased cardiovascular events. Salt is largely overconsumed in the standard American diet due to the overconsumption of processed foods (over 75% of daily sodium consumption comes from the salt found in processed foods). Reducing sodium to under 2.3g per day is the most recent recommendation from the AHA to reduce the risk of heart health events in those who are at risk.
The Mediterranean diet
Rich in fruits, vegetables, whole grains, olive oil, and lean proteins like fish and poultry – the Mediterranean Diet is associated with longevity and a reduced risk of health complications. Eating in this way by including a variety of whole foods, healthy fats and antioxidants in the diet has been shown to protect heart health and support other markers of cardiovascular function including healthy cholesterol, blood pressure and markers of oxidative stress. Examples of specific heart-healthy foods that are encouraged when eating this way include salmon, almonds, avocado, blueberries and olive oil.