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Frontotemporal dementia (FTD) is often associated with changes in personality and behaviour rather than memory loss, especially in its early stages. According to experts, one of the lesser known warning signs can be a sudden and unusual craving for sweet, fatty, and carbohydrate rich foods. While many people enjoy these foods from time to time, a dramatic shift in eating habits, particularly when combined with other behavioural changes, could indicate an underlying neurological condition.
Health experts stress that these symptoms should not be ignored, particularly if they appear alongside noticeable changes in mood, decision making, or social behaviour. Early recognition of frontotemporal dementia may help individuals and families seek medical advice sooner and access appropriate care and support.
Frontotemporal dementia is a group of brain disorders caused by the progressive degeneration of the frontal and temporal lobes of the brain. These areas are responsible for behaviour, personality, emotional regulation, decision making, and language.
Unlike Alzheimer's disease, which usually begins with memory problems, frontotemporal dementia often presents with behavioural and personality changes first. It also tends to affect people at a younger age, frequently between the ages of 45 and 65, although it can occur outside this range.
The condition worsens gradually over time, with symptoms becoming more pronounced as the disease progresses.
According to the Alzheimer's Society, people living with the behavioural variant of frontotemporal dementia may develop a strong preference for sweet foods, fatty meals, or carbohydrates. Some individuals may begin eating significantly more than usual or lose the ability to recognise when they have had enough.
These eating changes can include:
The organisation explains that these behaviours are linked to changes in the parts of the brain responsible for impulse control and self regulation.
The frontal lobes help regulate behaviour and control impulses. As these brain regions become damaged, people may struggle to resist urges they previously managed without difficulty.
This means someone who never had a sweet tooth could suddenly begin eating large quantities of chocolate, cakes, biscuits, or sugary snacks every day. Others may repeatedly seek out fast food, fried meals, or carbohydrate heavy dishes.
Experts note that this behaviour is not simply a lack of willpower. Instead, it reflects physical changes occurring within the brain.
Changes in eating habits rarely appear alone. Behavioural variant frontotemporal dementia often causes a range of symptoms that family members notice before the affected person does.
Common signs include:
Some people also become unusually fixated on schedules, collect unnecessary items, or repeatedly perform the same actions throughout the day.
One of the challenges of frontotemporal dementia is that people living with the condition often have little awareness that anything has changed.
The Alzheimer's Society explains that relatives, close friends, or colleagues are usually the first to notice shifts in personality and behaviour. Because the affected individual may not recognise these symptoms, they can be reluctant to seek medical advice or accept help.
This lack of awareness can delay diagnosis and treatment.
Many people assume dementia always begins with forgetfulness. However, frontotemporal dementia follows a different pattern.
Memory may remain relatively unaffected during the early stages, while behaviour and personality change significantly.
Someone may become:
These symptoms can sometimes be mistaken for depression, stress, or other mental health conditions.
Although there is currently no cure for frontotemporal dementia, obtaining an early diagnosis can make a significant difference.
A diagnosis allows patients and families to:
Doctors can also rule out other medical conditions that may cause similar symptoms.
Suddenly wanting more sugary or carbohydrate rich foods does not automatically mean someone has dementia.
Food cravings can result from many different factors, including:
However, experts advise paying attention if these cravings appear alongside dramatic personality changes, loss of social awareness, impulsive behaviour, or other neurological symptoms.
If a loved one develops unusual eating habits together with behavioural or personality changes, it is worth discussing these concerns with a GP or healthcare professional.
Early assessment may involve:
Prompt medical advice can help identify the underlying cause and provide access to appropriate treatment and support.
Frontotemporal dementia often begins in unexpected ways. Instead of memory loss, some people first experience significant changes in personality, behaviour, and eating habits. A sudden craving for sweet, fatty, or carbohydrate rich foods, especially when accompanied by impulsive behaviour or reduced social awareness, may be one of the early warning signs.
While these symptoms do not necessarily mean someone has dementia, they should not be dismissed if they represent a marked change from previous behaviour. Seeking medical advice early can improve access to support, help families understand what is happening, and ensure other possible causes are investigated.
This article is for informational purposes only and should not be considered medical advice. Changes in eating habits or behaviour can have many possible causes and do not necessarily indicate dementia. Anyone experiencing persistent symptoms or concerns about cognitive or behavioural changes should consult a qualified healthcare professional for assessment and diagnosis.