Meanwhile, Helen Bell, a nutritionist at Help & Advice, also recently told the Mirror: "[These foods] are known for supporting brain health and improving cognitive function... including leafy greens like spinach and kale, which are high in folate and other essential nutrients, can make a significant difference.".
Dubbing them a 'superfood', Katherine D. McManus, an affiliate teacher at Harvard Medical School, previously said in 2022: "Dark, leafy greens are a good source of vitamin A, vitamin C, and calcium, as well as several phytochemicals (chemicals made by plants that have a positive effect on your health).
While each of these ingredients boast their own unique health benefits, leafy greens like spinach often receive special attention among experts.
The TV star's straightforward recipe involves just six ingredients including spinach, celery, cucumber, ginger, apple and water.
In 2016, Ruth shared another version of the juice on Facebook, which appears to swap celery and apple for avocado, kiwi and lime.
