Why Mary Berry's 'everything in moderation' diet at 91 is the ultimate longevity secret


The former Great British Bake Off judge shares the consistent daily eating habits that keep her fit and well - along with the odd slice of cake!


Image© Getty Images for the NTA's
Chloe Couchman
Chloe CouchmanLifestyle Writer
March 27, 2026
Share this:

Dame Mary Berry is the picture of health and vitality as she recently celebrated her 91st birthday this week, but how does she do it? She may be known as the Queen of Cakes, but the former Great British Bake Off judge actually adheres to the mantra of "everything in moderation", and it may well be the secret to her looking so vibrant in her nineties.

The 91-year-old has previously spoken openly about her daily diet and revealed that she has a few key habits that help her to maintain a healthy weight, starting with a simple breakfast of toast with homemade marmalade or a boiled egg.

A healthy breakfast

Mary Berry in a blue outfit© Getty Images
Mary Berry is consistent with her daily eating habits

"I make myself eat one piece of toast for breakfast," Mary previously told The Sunday Times, while in another interview with The Independent, she disclosed her favourite comfort foods, revealing: "I really like boiled eggs or toast and marmalade. I've made loads of marmalade this year, so I'd have that. 

"I save all my clementine and satsuma peelings and put them in the freezer and use them to bulk out my preserve – it gives it its own identity. If I have a choice of bread to have it on, I always like Paul Hollywood's seeded variety."

Toast often gets a bad rep nutritionally, but as a nutrition and health coach, I believe it's not always a bad choice, particularly if you opt for a seeded or wholegrain loaf like Mary's, and pair it with protein-rich eggs to prevent blood sugar spikes. 

Meanwhile, her homemade marmalade is a nutritious choice that may support healthy ageing, as citrus peel contains hesperidin and naringenin, compounds with cardiovascular and anti-inflammatory properties. 

A light lunch

Mary Berry and Paul Hollywood with presenter Mel Giedroyc © Comic Relief, Getty Images
The Bake Off star ate soup while filming to prevent overindulgence

Mary says she favours a light but nutritious lunch like soup, and tries to avoid overindulgence to maintain her weight. "When I'm doing Bake Off, I eat soup for lunch. I know what puts on weight for me, it's just over-indulgence. It's a case of grasping the mettle. I know it's difficult. It's about everything in moderation," she said.

The mother-of-three added that she opts to have a small plate of food and likes to eat lots of vegetables, such as "green vegetables, broccoli, beans."

Mary's preference for light, plant-based meals likely contributes to her well-being, as these vegetables are great sources of fibre, vitamin K and sulforaphane, which are all associated with reduced inflammation and better cognitive outcomes in older adults. 

Mary Berry sticks to a light lunch of soup and salad© BAFTA via Getty Images
Mary Berry's diet is similar to those who live in the Blue Zones

Her dietary habits are also reminiscent of some of those followed by people who live in the Blue Zones, the areas of the world where people have the longest lifespan. In Okinawa, people follow the "80 per cent rule", where they stop eating before they feel full, which is a similar approach to what Mary follows with her light soups and small plates.

A hearty home-cooked dinner

As a talented chef, it's little surprise that Mary loves cooking a hearty homemade meal for dinner. Speaking to The Bristol Mag, the cook said of her stand-out specialities: "If it’s a cold winter’s day, I might do beef stew with horseradish dumplings, or I might do a fillet of beef en croute."

The star also told The Independent that if she had to choose a desert island recipe, it would be "a simple pasta recipe. First, boil some pasta in salted water. Then cook some broccoli or, if in season, asparagus." Mary then adds pieces of fried dry-cured ham and cream to the pasta. 

Another dinner favourite of Mary's is "a really good sausage, the ingredients for celeriac and potato mash with crème fraîche and some English roasted vegetables," she told The Times.

Everything in moderation

President of the National Garden Scheme Dame Mary Berry attends The RHS Chelsea Flower Show in a multicoloured dress and brown loafers© Getty
Mary doesn't deny herself the occasional treat

What is particularly refreshing about Mary's diet is that she doesn't deny herself the occasional treat and prefers to enjoy everything in moderation. She told The Sunday Times: "I think to eat cake is very good for us, but it's the size of the slice and how often you have it."

Mary's diet succeeds because of consistency, not perfection. She follows a structured and predictable eating pattern that will support stable blood sugar levels and prevent energy crashes that can lead to overeating or sugar cravings. 

Meanwhile, Mary's enjoyment of both eating and preparing food is also in line with how adults eat in the Blue Zones, where purpose, joy and connection with food are just as important as their nutritional properties. Overall, at 91 and still actively cooking and working, Mary's dietary philosophy can teach us a lot about sustainable, joyful eating, and aligns closely with what the science on longevity tells us works.

More Food
See more