Stress is a natural response of the body to challenging situations. However, when it becomes chronic, it can have negative effects on our health, including impacts on cholesterol levels and, consequently, on our cardiovascular health.
In this article, we explore how stress can raise cholesterol and what actions you can take to reduce this risk.
What is cholesterol and how does it affect your health?
Cholesterol is a waxy substance found in all cells of the body. Although the body needs cholesterol to form cell membranes, produce hormones, and synthesise vitamin D, excess cholesterol can be harmful, especially when it builds up in the arteries.
There are two main types of cholesterol:
LDL cholesterol (low-density lipoproteins):
Known as "bad cholesterol", LDL can build up on artery walls, forming plaques that obstruct blood flow and increase the risk of heart disease.
HDL cholesterol (high-density lipoproteins):
Known as "good cholesterol", HDL helps remove excess LDL cholesterol from the body, thereby reducing the risk of cardiovascular disease.
Maintaining an appropriate balance between LDL and HDL cholesterol is essential for maintaining good cardiovascular health.
Stress and high cholesterol: how are they related?
Stress, especially chronic stress, can have a direct impact on cholesterol levels. When you face stressful situations, your body releases stress hormones such as cortisol. This hormone, at high levels for prolonged periods, can alter various biological processes that affect cardiovascular health.
Cortisol can increase blood glucose production, which can promote abdominal fat accumulation. In turn, stress can trigger an increase in LDL cholesterol levels and reduce HDL cholesterol, putting cardiovascular health at risk.
Biological mechanisms: why does stress raise cholesterol?
When we experience stress, the body enters a state of "fight or flight," causing a series of changes in the nervous and endocrine systems. These changes, although necessary to deal with an immediate threat, can be harmful if they continue over the long term.
Cortisol
Cortisol, known as the "stress hormone", plays a key role in regulating the stress response. However, when it remains elevated, it can contribute to insulin resistance and chronic inflammation, both of which can raise LDL cholesterol levels.
Haemoconcentration
Stress can cause haemoconcentration, which means that the blood becomes more viscous due to dehydration. This can increase blood pressure and cause cholesterol to accumulate more easily in the arteries.
Sugar and fatty acids
During a stress response, the body also releases fatty acids and glucose into the bloodstream to provide immediate energy. If these levels remain elevated, they can contribute to increased LDL cholesterol levels.
How can you tell if stress is affecting your cholesterol?
Stress can affect your cholesterol levels, and although it is not always easy to identify, there are several signs that indicate it:
Chronic fatigue
Constant exhaustion can make it difficult to lead an active life and eat a healthy diet.
Weight gain, especially abdominal
Stress can contribute to weight gain in the abdominal area, which increases the risk of high cholesterol.
Increased anxiety and irritability
These common symptoms of stress are linked to elevated cortisol levels, which increase the risk of cardiovascular disorders.
If you experience these symptoms, it is important to monitor your cholesterol levels and seek professional help.
What can you do to reduce stress-related cholesterol?
Reducing stress is essential for maintaining healthy cholesterol levels and improving your overall well-being. Here are some key strategies you can incorporate into your daily routine:
Regular exercise
It helps reduce cortisol, improves circulation, and increases HDL cholesterol, the "good" cholesterol for cardiovascular health.
Meditation and relaxation techniques
Practising mindfulness or deep breathing can reduce stress levels and contribute to emotional balance.
Adequate rest
Sleeping seven to eight hours a night is associated with a more stable hormonal profile and lower cortisol levels; chronic sleep deprivation, by contrast, has been linked in observational studies to poorer lipid profiles.
Balanced diet
Eating foods rich in fibre, antioxidants and omega-3 fatty acids, while reducing your intake of saturated fats, helps to balance your cholesterol levels.
Incorporating these habits will not only help you manage stress, but also keep your cholesterol levels within a healthy range, promoting optimal cardiovascular health.
Cortisol and cholesterol: what has been studied in omega-3, antioxidants and adaptogens
In addition to a healthy lifestyle, certain natural supplements can be useful for balancing cholesterol and reducing the negative effects of stress on cardiovascular health. Some of the most recommended supplements include:
Omega-3
Omega-3 fatty acids are known for their ability to lower LDL cholesterol levels and increase HDL.
Antioxidants
Vitamin C and vitamin E contribute to the protection of cells from oxidative stress. Resveratrol, a polyphenol extracted from Polygonum cuspidatum, has been studied in that same area.
Ashwagandha and rhodiola
Ashwagandha and rhodiola are adaptogenic plants with a long tradition of use and clinical trials of their own. With standardised ashwagandha root, several eight- to twelve-week studies have measured salivary or serum cortisol as an outcome; with rhodiola, the literature has focused mainly on cognitive performance under fatigue. In none of those trials was the lipid profile the outcome measured.
It is important to consult with a healthcare professional before starting any supplement regimen.
Stress, cortisol and cholesterol: where to start
Order matters. While cortisol stays high over time, everything else works uphill, so the sensible place to start is what depends on habits: seven to eight hours of sleep, 150 minutes of aerobic exercise a week and a few minutes of slow diaphragmatic breathing each day. Any decision about cholesterol is made with test results in hand and with a healthcare professional.