Have you ever wondered why some foods are labelled as super-healthy or even earn the moniker “superfood”? The answer often lies in polyphenols.
These naturally-occurring compounds found in plants offer a wide range of health benefits, making them an essential component of a balanced healthy diet for optimal health, wellbeing and performance.
Polyphenols are powerful antioxidants that protect the body from free radical damage, reduce inflammation and improve heart health, and they’re also linked to better brain function, enhanced digestive health, and even a lower risk of certain cancers.
From flavonoids in fruits and vegetables to phenolic acids in coffee and whole grains, here’s what you need to know about polyphenols to start eating for greater health and happiness.
What are polyphenols?
Polyphenols are naturally occurring compounds found in plants, renowned for their potent antioxidant properties. These compounds play a crucial role in defending the body against harmful free radicals, which can damage cells and contribute to chronic diseases. Polyphenols are classified into several groups, including flavonoids, phenolic acids, polyphenolic amides, and other polyphenols. Each group offers unique health benefits, contributing to the overall wellness of the body. For example, flavonoids, found in fruits and vegetables, have been shown to improve cardiovascular health, while phenolic acids, abundant in coffee and grains, possess anti-inflammatory properties . Polyphenols can reduce oxidative stress and improve endothelial function, according to the Journal of Nutrition, which is vital for cardiovascular health.
Why are polyphenols important?
Polyphenols are essential due to their potent antioxidant activity, which helps reduce oxidative stress in the body. Oxidative stress is linked to the development of chronic conditions such as heart disease, diabetes and cancer. These antioxidant properties can mitigate the risk of these diseases by neutralising free radicals, according to the Oxidative Medicine and Cellular Longevity journal. Polyphenols also have anti-inflammatory properties that can alleviate chronic inflammation, a contributor to many health issues, and can support gut health by promoting beneficial bacteria, improving digestion, and enhancing nutrient absorption. Additionally, they may enhance brain function by protecting neurons from damage and improving cognitive performance, according to the Journal of Alzheimer’s Disease. By incorporating polyphenol-rich foods like fruits, vegetables, nuts, and teas into your diet, you can harness these health benefits and improve your overall well-being.
What are the different types of polyphenols?
They are categorised into four main groups:
- Flavonoids in fruits, vegetables, tea and dark chocolate
- Phenolic acids in coffee, fruits and whole grains
- Polyphenolic amides in oats and chili peppers
- Other polyphenols, including resveratrol in red wine and lignans in flax seeds
What are the best dietary sources of polyphenols?
Some of the best dietary sources include fruits (berries, apples, grapes), vegetables (onions, spinach, broccoli), nuts, seeds, dark chocolate, tea (green and black), coffee, and red wine. Incorporating a variety of these foods into your diet can help ensure you get a broad range of polyphenols and their associated benefits.
Does science support the health claims of polyphenols?
Studies have shown that polyphenol-rich diets are linked to a lower risk of chronic diseases. For instance, a study published in the Journal of Nutrition found that high intake was associated with a reduced risk of cardiovascular disease and improved longevity. However, more research is needed to fully understand the mechanisms and potential of these group of compounds.
Should I take polyphenol supplements?
While getting polyphenols from whole foods is ideal due to the additional nutrients and fibre they provide, supplements can be a convenient option for those unable to meet their needs through diet alone. However, it’s essential to consult with a healthcare provider before starting any new supplement, as the benefits and risks can vary based on individual health conditions and needs.
