Can Diet Help Dementia? Sylvia Hatzer's Story and the Evidence

Can a change of diet bring back memories lost to dementia? For one family in Prestwich, near Manchester, it felt that way. Sylvia Hatzer, 82, was diagnosed with Alzheimer's disease in December 2016 and became so confused in hospital that she did not recognise her son. A year later, after a Mediterranean-style eating plan, puzzles, exercise and plenty of company, she was home again, remembering birthdays and going to tea dances.

The honest answer to the bigger question is more cautious. A healthy lifestyle can help some people with dementia feel and function better, and it is linked with a lower risk of cognitive decline. It has not been shown to reverse Alzheimer's disease. Here is Sylvia's story, what her son Mark actually did, and what the research says.

A family in crisis

Mark and Sylvia had been a tight unit for decades. Mark's father and brother had both died, which left the two of them with no other close relatives. Mark, a lawyer, first noticed his mother's forgetfulness a few years before her diagnosis. Her condition worsened sharply after a seizure and a fall, and she was admitted to North Manchester General Hospital.

The months that followed were frightening. Sylvia spent about three months in hospital over the course of a year. She believed the ward was a hotel, a very bad one, and one night she rang the police to report that she had been kidnapped. Staff even asked Mark whether he would agree to her being detained under the Mental Health Act. In his account for the Alzheimer's Society he describes sitting by her bed for more than twelve hours a day, losing four stone in weight and getting by on around three hours of sleep a night.

What hurt most, he said in newspaper interviews, was that his mother no longer knew who he was.

What Mark and Sylvia changed

Her doctors prescribed medication, which the Alzheimer's Society notes could only slow the disease. Mark wanted to add something more. He read books by specialists and then, together with Sylvia's treating team, put together a plan built on four pillars.

• Food. Their menu borrowed from Mediterranean eating: oily fish, walnuts and Brazil nuts, blueberries and strawberries, leafy greens such as kale and spinach, broccoli, sunflower seeds, oats, sweet potatoes, green tea and a little dark chocolate with a high cocoa content.
• Mental exercise. Jigsaws, crosswords and memory games became part of the routine.
• Movement. Regular walks and a small pedalling device that Sylvia could use while sitting in her chair.
• People. Social groups, outings and later tea dances, so she was talking and laughing with others every week.

Sylvia at home at Christmas, back in familiar surroundings after her long hospital stays.

Improvement came slowly. Mark has stressed that it was no quick fix, and he described progress arriving little by little, day by day. After a couple of months Sylvia began remembering family dates again and seemed more alert and engaged. By 2018 she was managing much of her own care, the Alzheimer's Society was sharing their story, and the pair had been invited to a royal garden party.

One detail is often misreported. Many viral retellings implied that Sylvia swapped prescribed medication for diet. The Alzheimer's Society account says the lifestyle plan was drawn up with her doctors and alongside her treatment, not instead of it.

What the evidence says about diet and dementia

Nutrition researchers have been studying the link for years. The best-known example is the MIND diet, developed in 2015 by a team at Rush University Medical Center in Chicago that included the nutritional epidemiologist Martha Clare Morris. It blends the Mediterranean and DASH diets and puts special weight on leafy greens, berries, nuts, beans, whole grains, fish, poultry and olive oil. Older adults whose eating most closely matched it showed slower cognitive decline over several years.

There is an important catch: studies like that are observational. People who eat well also tend to exercise, smoke less and have more money and education, so it is hard to prove the food itself is responsible. Later randomised trials have produced mixed results. The overall picture is that a balanced diet supports heart and blood-vessel health, which matters for the brain, and that it is a sensible part of reducing risk. It is not a proven treatment that can undo Alzheimer's disease once it has started.

The Alzheimer's Society puts it in similar terms on its page about Mark and Sylvia: healthy habits can help people manage symptoms and live well, but there is no strong evidence that they slow or stop the underlying disease.

Mark and Sylvia Hatzer. Their story has been shared by the Alzheimer's Society as an example of living well with dementia.

Why someone with dementia can seem to get better

If the disease itself is not reversed, why did Sylvia improve so much? Several things can explain partial recovery, and they are worth knowing for any family in a similar position.

• Delirium clears. Hospital stays, infections, seizures, dehydration and some medicines can cause delirium, a sudden state of confusion that sits on top of dementia. When the trigger is treated and the person goes home, thinking often improves a great deal.
• Seizures are controlled. Sylvia's diagnosis came with epileptic fits. Better control of seizures can lift a fog that looked like advancing dementia.
• Nutrition and fluids improve. Older people who eat and drink poorly can become weak and confused. Regular, appealing meals help.
• Stimulation and company. Activity, conversation and routine help people use the abilities they still have and can lift mood, which in turn sharpens attention.

None of this makes the family's effort less real. It simply means the gains came from many directions at once, and that any change in medication or care should be discussed with a doctor first.

The aluminium myth

Articles that shared Sylvia's story often bolted on claims that aluminium in cookware, cans or deodorant causes Alzheimer's, usually quoting research by the British chemist Christopher Exley. That idea is not supported by the wider evidence.

It goes back to a 1965 experiment in which rabbits injected with very high doses of aluminium developed tangles in their brains, doses far beyond anything a person takes in from food or household items. The UK Alzheimer's Society says there is no solid evidence that aluminium is raised in the brains of people with the disease, and no convincing link between exposure and risk. The US Alzheimer's Association states:

“Studies have failed to confirm any role for aluminum in causing Alzheimer's.”

In 2022 the fact-checking site PolitiFact rated a viral claim about aluminium and Alzheimer's as false. Familial Alzheimer's disease, a rare early-onset form, is driven by inherited gene changes, not by metal pans.

Practical takeaways for families

• Get a proper assessment. Sudden confusion is not always dementia. Ask a doctor to check for infections, medicine side effects, seizures and other treatable causes.
• Eat in a Mediterranean style. Vegetables, fruit, whole grains, nuts, beans, fish and olive oil are good for the heart and a reasonable choice for the brain. There is no single miracle food.
• Keep moving and keep company. Walking, chair exercises, puzzles, music and social clubs all help people stay engaged.
• Look after the carer. Mark's weight loss and sleepless nights are common among family carers. Dementia advisers, charities and local support groups exist for exactly this reason.
• Do not stop prescribed medicines on your own. Talk to a doctor before changing any treatment.

Sylvia's recovery is one family's experience, and a heartening one. It shows how much care, routine and good food can matter, even if they are not a cure.

Sources: Alzheimer's Society: Mark's Alzheimer's story; Staffordshire Live: How a change of diet transformed a life; Wikipedia: MIND diet; PolitiFact, 29 July 2022: Evidence does not support link between Alzheimer's and aluminum; photos via the Daily Mirror.