What Is Marigold Flower Extract?
Marigold flower extract is derived from the petals of Tagetes erecta, commonly known as African marigold. Beyond its vibrant golden-orange colour, this flower is an important natural source of carotenoids, particularly lutein and zeaxanthin, two antioxidants that play an important role in maintaining eye health.
These carotenoids are naturally present in the human retina, especially in the macula, the area responsible for central vision and detailed visual tasks.
How Does Marigold Extract Support Eye Health?
1. Helps Protect Cells Against Oxidative Stress
Lutein and zeaxanthin are carotenoids with antioxidant properties. They help protect cells against oxidative stress caused by free radicals, which can contribute to cellular damage over time.
Because the eyes are continually exposed to light and require substantial metabolic activity, antioxidant nutrients form part of the body's natural defence system.
2. Supports Macular Health
The macula contains a concentrated pigment made up primarily of lutein, zeaxanthin and meso-zeaxanthin. These pigments help filter certain wavelengths of light and contribute to the protection of retinal tissues.
Dietary lutein and zeaxanthin can increase their concentrations in the blood and contribute to macular pigment levels. Research suggests that maintaining adequate intake of these carotenoids is relevant to long-term eye health.
3. Supports Visual Function
Lutein and zeaxanthin have been studied for their potential role in visual performance, including contrast sensitivity, the ability to distinguish objects from their backgrounds, particularly under challenging lighting conditions.
How Can You Support Eye Health Through Nutrition?
Alongside an appropriate supplement, a balanced diet can help provide carotenoids and other nutrients that support normal eye function.
Examples include:
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Dark leafy vegetables: Spinach and kale provide lutein.
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Egg yolks: Supply lutein and zeaxanthin in a readily available dietary form.
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Colourful vegetables: Carrots, pumpkin and other vegetables provide a variety of carotenoids and other nutrients.
A varied diet, regular eye examinations and appropriate eye protection are important components of a broader approach to eye health.
The Takeaway
Marigold flower extract is a valuable source of lutein and zeaxanthin, two carotenoids associated with macular health and visual function. By supplying these nutrients, a standardised marigold extract can complement a balanced diet and support overall eye health.