Marie Claire Marie Claire
  • Celebrity
  • Fashion
  • Beauty
  • Culture
  • Power
  • Nice Talk
  • Fashion Month
  • More
    • Politics
    • Career Money
    • Health Fitness
    • Power Play
    • Travel
    • Promo Codes
    • Food Cocktails
    • About Us
    • Subscribe
    • Sex Love
  • Newsletter SIGN UP TO OUR NEWSLETTER
  • Marie Claire
    Marie Claire Newsletter

    Celebrity news, beauty, fashion advice, and fascinating features, delivered straight to your inbox!


    By submitting your information you agree to the Terms Conditions and Privacy Policy and are aged 16 or over.

    You are now subscribed

    Your newsletter sign-up was successful


    Want to add more newsletters?

    Marie Claire Daily

    Delivered daily

    Marie Claire Daily

    Get exclusive access to fashion and beauty trends, hot-off-the-press celebrity news, and more.

    Marie Claire Self Checkout

    Sent weekly on Saturday

    Marie Claire Self Checkout

    Exclusive access to expert shopping and styling advice from Nikki Ogunnaike, Marie Claire's editor-in-chief.

    Maire Claire Face Forward

    Once a week

    Maire Claire Face Forward

    Insider tips and recommendations for skin, hair, makeup, nails and more from Hannah Baxter, Marie Claire's beauty director.

    Livingetc

    Once a week

    Livingetc

    Your shortcut to the now and the next in contemporary home decoration, from designing a fashion-forward kitchen to decoding color schemes, and the latest interiors trends.

    Homes amp; Gardens

    Delivered Daily

    Homes Gardens

    The ultimate interior design resource from the world's leading experts - discover inspiring decorating ideas, color scheming know-how, garden inspiration and shopping expertise.


    An account already exists for this email address, please log in.
    Trending
    • NYFW
    • Life In Plastic
    • Cari Champion
    • New Books
    • Postpartum Psychosis
    1. Celebrity
    2. Royals

    Princess Kate Reportedly Kicks Off Her Mornings With One Divisive Superfood Ingredient

    Princess Kate reportedly loves one nutritionally-packed treat.

    Kristin Contino#039;s avatar
    By Kristin Contino
    Published 11 May 2026 In News

    When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

    Princess Kate wearing a blue hat and smiling
    (Image credit: Getty Images)
    • Facebook
    • X
    • Pinterest
    Share this article
    Join the conversation
    Follow us
    Add us as a preferred source on Google
    Subscribe to our newsletter

    King Charles is known for his love of fresh, organic ingredients, and daughter-in-law Princess Kate is no different. The Princess of Wales has long been a fan of a healthy diet, but after her 2024 cancer diagnosis, she’s admitted that she’s become even more conscious of what goes into her body—like cutting back on alcohol. According to one insider, Princess Kate loves a smoothie for breakfast, and she’s said to enjoy one ingredient that has divided experts on its health benefits.

    A royal insider told the Daily Mail in 2016 that Kate's “organic diet is rich in antioxidants and she adores salads and bowls of seasonal fruits.” Along with mixing berries and almond milk for a sweet treat, she reportedly “drinks smoothies morning and afternoon, containing spirulina, kale, matcha (a finely ground green tea powder), spinach, romaine, cilantro and blueberries.”

    Spirulina comes from a blue-green algae plant and is said to possess multiple health benefits, including anti-inflammatory and cancer-fighting properties, as well as the ability to lower cholesterol.

    Latest Videos FromMarie Claire
    Watch full video here:

    Princess Kate drinking a smoothie

    Princess Kate tries a smoothie called the "Duchess" during a 2012 visit to the Brink, an alcohol-free bar in Liverpool.

    (Image credit: Getty Images)

    Princess Kate wearing a white blazer dress

    Princess Kate is pictured at a Buckingham Palace garden party on May 8.

    (Image credit: Getty Images)

    But while multiple health experts have promoted the benefits of spirulina, others aren’t so sure. A Harvard Medical School publication noted that since there’s not enough research done on it and spirulina isn’t regulated by the FDA, “there’s no guarantee that the product you buy will be contaminant-free or contain the amount of spirulina promised on the label.”

    At the end of the day, a study published by the National Institutes of Health noted that spirulina “is a safe food supplement without significant side-effects but its role as a drug remains to be seen.”

    You may like
    • Princess Kate wearing a green dress and holding hands with a cancer patient Princess Kate Reflects On the "Huge Difference" One Hobby Made on Her Cancer Recovery
    • Princess Kate Middleton wears a canary yellow Roksanda dress and a matching hat with netting to attend day two of Royal Ascot 2026 at Ascot Racecourse on June 17, 2026 in Ascot, England Princess Kate Says Everyone Can "Stay Well" If They Do "One Thing"
    • Princess Kate Loves This Therapeutic Hobby Prince William Shared Princess Kate Loves This Therapeutic Hobby—And It's Under $11

    Spirulina aside, the Princess of Wales also has a fondness for curry and spicy foods, along with a classic Sunday roast. “In the evenings [Kate] indulges her hobby of cooking William's favorite supper, roast chicken,” Katie Nicholl wrote in Vanity Fair in 2012.

    “They are reported to own a sausage-maker, and she has started making homemade pots of fruit jam while her husband is at work,” the royal journalist added.

    Marie Claire Newsletter

    Celebrity news, beauty, fashion advice, and fascinating features, delivered straight to your inbox!

    By submitting your information you agree to the Terms Conditions and Privacy Policy and are aged 16 or over.

    Kate Naturals Organic Spirulina Powder for Immune Support and Antioxidants. Nutrient Dense Superfood Supplement (8 Oz, Usda Certified, Non-Gmo, Gluten- Free)

    Kate Naturals
    Kate Naturals Organic Spirulina Powder
    $10
    SHOP NOW

    365 by Whole Foods Market, Organic Spirulina Superfood Powder, 4 Ounce

    365 by Whole Foods Market
    365 by Whole Foods Market, Organic Spirulina Superfood Powder
    $13
    SHOP NOW

    Explore More
    Princess Catherine
    Kristin Contino
    Kristin Contino
    Senior Royal and Celebrity Editor

    Kristin Contino is Marie Claire's Senior Royal and Celebrity editor. She's been covering royalty since 2018—including major moments such as the Platinum Jubilee, Queen Elizabeth II’s death and King Charles III's coronation—and places a particular focus on the British Royal Family's style and what it means.

    Prior to working at Marie Claire, she wrote about celebrity and royal fashion at Page Six Style and covered royalty from around the world as chief reporter at Royal Central. Kristin has provided expert commentary for outlets including the BBC, Sky News, US Weekly, the Today Show and many others.

    Kristin is also the published author of two novels, “The Legacy of Us” and “A House Full of Windsor.” She's passionate about travel, history, horses, and learning everything she can about her favorite city in the world, London.

    Read more
    Princess Kate wearing a green dress and holding hands with a cancer patient
    Royals Princess Kate Reflects On the "Huge Difference" One Hobby Made on Her Cancer Recovery
    By Kristin Contino
    Princess Kate wearing a green dress at Royal Marsden hospital
    Royals Princess Kate Trades Fall's Trendy Moss Green for an Old Favorite Emerald Dress
    By Kristin Contino
     
     
    Princess Kate sitting in a car wearing a white blouse and brown hat
    Royals Princess Kate’s Summer Hair Switch-Up Has Become a Balmoral Tradition
    By Kristin Contino
    Princess Kate wears a hat with a high-neck white shirt and gray blazer to attend church in Balmoral with Prince George and Prince Louis
    Royals Princess Kate Delivers Vintage Vibes in a Pie-Crust Collar
    By Amy Mackelden
     
     
    Latest in Royals
    A split image of Prince Harry kissing Lilibet and Harry and Lilibet skiing
    Royals Princess Lilibet Shares One of Mom Meghan's Favorite Hobbies
    Grace Kelly wearing a white dress
    Royals Grace Kelly "Understood Quiet Luxury" Before the Term Was Invented
     
     
    Princess Lilibet, Prince Archie and Prince Harry walking through grass at Althorp
    Royals Prince Archie and Princess Lilibet Are Changing Schools After Just 2 Days
    Princess Anne wearing a coat and paisley scarf
    Royals Princess Anne Gets a "Round of A-Paws" from Sheep Dogs in Timeless Paisley Look
     
     
    Latest in News
    A split image of Prince Harry kissing Lilibet and Harry and Lilibet skiing
    Royals Princess Lilibet Shares One of Mom Meghan's Favorite Hobbies
    Ayo Edebiri 2026 Emmys red carpet
    Celebrity Style Ayo Edebiri Sticks to Her Winning Red Carpet Formula at the Emmys
     
     
    a white woman in a gold dress with dark brown hair
    Nails Selena Gomez's 2026 Emmys Manicure Is All About a "Frosted Sunset" Finish
    US actress Zendaya presents the Outstanding Lead Actress in a Comedy Series award to US actress Jean Smart onstage during the 78th Primetime Emmy Awards at the Peacock Theatre at LA Live in Los Angeles on September 14, 2026.
    Culture We're Tracking Every Can't-Miss Moment From the 2026 Emmys
     
     
     
     
     
     
     
     
    Marie Claire
    RSS
    • About us
    • Contact Future's experts
    • Contact us
    • Advertise Online
    • Newsletter
    • Terms and conditions
    • Privacy policy
    • Cookies policy
    • Careers
    Add as a preferred source on Google Add as a preferred source on Google

    Marie Claire is part of Future US Inc, an international media group and leading digital publisher. Visit our corporate site.

    © Future US, Inc. Full 7th Floor, 130 West 42nd Street, New York, NY 10036.