Early indicators of dementia: 5 behaviour changes to look for after age 50
Calgary (Canada) (The Conversation): Dementia is often thought of as a memory problem, like when an elderly person asks the same questions or misplaces things. In reality, individuals with dementia will not only experience issues in other areas of cognition like learning, thinking, comprehension and judgement, but they may also experience changes in behaviour.
It's important to understand what dementia is and how it manifests. I didn't imagine my grandmother's strange behaviours were an early warning sign of a far more serious condition.
She would become easily agitated if she wasn't successful at completing tasks such as cooking or baking. She would claim to see a woman around the house even though no woman was really there. She also became distrustful of others and hid things in odd places.
These behaviours persisted for some time before she eventually received a dementia diagnosis.
Cognitive and behavioural impairment
When cognitive and behavioural changes interfere with an individual's functional independence, that person is considered to have dementia. However, when cognitive and behavioural changes don't interfere with an individual's independence, yet still negatively affect relationships and workplace performance, they are referred to as mild cognitive impairment (MCI) and mild behavioural impairment (MBI), respectively.
MCI and MBI can occur together, but in one-third of people who develop Alzheimer's dementia, the behavioural symptoms come before cognitive decline.
Spotting these behavioural changes, which emerge in later life (ages 50 and over) and represent a persistent change from longstanding patterns, can be helpful for implementing preventive treatments before more severe symptoms arise. As a medical science PhD candidate, my research focuses on problem behaviours that arise later in life and indicate increased risk for dementia.
Five behavioural signs to look for
There are five primary behaviours we can look for in friends and family who are over the age of 50 that might warrant further attention.
1. Apathy
Apathy is a decline in interest, motivation and drive.
An apathetic person might lose interest in friends, family or activities. They may lack curiosity in topics that normally would have interested them, lose the motivation to act on their obligations or become less spontaneous and active. They may also appear to lack emotions compared to their usual selves and seem like they no longer care about anything.
2. Affective dysregulation
Affective dysregulation includes mood or anxiety symptoms. Someone who shows affective dysregulation may develop sadness or mood instability or become more anxious or worried about routine things such as events or visits.
3. Lack of impulse control
Impulse dyscontrol is the inability to delay gratification and control behaviour or impulses.
Someone who has impulse dyscontrol may become agitated, aggressive, irritable, temperamental, argumentative or easily frustrated. They may become more stubborn or rigid such that they are unwilling to see other views and are insistent on having their way. Sometimes they may develop sexually disinhibited or intrusive behaviours, exhibit repetitive behaviours or compulsions, start gambling or shoplifting, or experience difficulties regulating their consumption of substances like tobacco or alcohol.
4. Social inappropriateness
Social inappropriateness includes difficulties adhering to societal norms in interactions with others.
Someone who is socially inappropriate may lose the social judgement they previously had about what to say or how to behave. They may become less concerned about how their words or actions affect others, discuss private matters openly, talk to strangers as if familiar, say rude things or lack empathy in interactions with others.
5. Abnormal perceptions or thoughts
Abnormal perception or thought content refers to strongly held beliefs and sensory experiences.
Someone with abnormal perceptions or thoughts may become suspicious of other people's intentions or think that others are planning to harm them or steal their belongings. They may also describe hearing voices or talk to imaginary people and/or act like they are seeing things that aren't there.
Before considering any of these behaviours as a sign of a more serious problem, it's important to rule out other potential causes of behavioural change such as drugs or medications, other medical conditions or infections, interpersonal conflict or stress, or a recurrence of psychiatric symptoms associated with a previous psychiatric diagnosis. If in doubt, it may be time for a doctor's visit.
The impact of dementia
Many of us know someone who has either experienced dementia or cared for someone with dementia. This isn't surprising, given that dementia is predicted to affect one million Canadians by 2030.
While people between the ages of 20 and 40 may think that they have decades before dementia affects them, it's important to realize that dementia isn't an individual journey. In 2020, care partners including family members, friends or neighbours spent 26 hours per week assisting older Canadians living with dementia. This is equivalent to 235,000 full-time jobs or
7.3 billion annually.
These numbers are expected to triple by 2050, so it's important to look for ways to offset these predicted trajectories by preventing or delaying the progression of dementia.
Identifying those at risk
While there is currently no cure for dementia, there has been progress towards developing effective treatments, which may work better earlier in the disease course.
More research is needed to understand dementia symptoms over time; for example, the online CAN-PROTECT study assesses many contributors to brain aging.
Identifying those at risk for dementia by recognising later-life changes in cognition, function as well as behaviour is a step towards not only preventing consequences of those changes, but also potentially preventing the disease or its progression. (The Conversation)
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Trump arrives in China for talks with Xi
Beijing (PTI): US President Donald Trump arrived in China on Wednesday for a three-day state visit during which he will discuss a host of global issues, including the Iran war, with Chinese President Xi Jinping.
Trump, who is visiting China at the invitation of President Xi, was received by Chinese Vice President Han Zheng at the airport.
The leaders of the world's two largest economies will hold their seventh face-to-face talks. They last met face-to-face in October 2025 in Busan, South Korea.
The US President arrived in China on his second visit in nine years to clinch a trade deal, to end the frictions over tariffs that affected its over USD 525 billion exports to the US.
Trump, who is accompanied by top CEOs, was the last US president to visit China in 2017, during his first term.
President Trump would have a bilateral meeting with Xi on Thursday, US Principal Deputy Press Secretary Anna Kelly said on Sunday.
The two leaders will meet again on Friday for a bilateral tea and working lunch, she said, adding that the US plans to host the Chinese leader for a reciprocal visit later this year.
Ahead of Trump's arrival, Chinese Vice-Premier He Lifeng and Scott Bessent completed the final round of trade negotiations in South Korea, details of which are not known.
The talks focused on trade and tariffs, Artificial Intelligence and technology, Taiwan and US' arms sales to Taipei, Iran and West Asia security and rare earths and supply chains.
Trump's schedule included a visit to the Temple of Heaven, a complex of imperial temples where emperors would pray for a good harvest.
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Ahead of his departure for Beijing, Trump told the media in Washington he would be talking with Xi about trade more than anything else.
He plans to sign more deals with China to buy more American food and aircraft. The two countries also plan to set up a Board of Trade with China to address differences between the countries.
From a trade point of view, China looks to reap a rich harvest as Trump is accompanied by top CEOs of US multinational giants, including Tesla chief Elon Musk and Apple CEO Tim Cook, who have well-entrenched business in China.
Apple has regained the top spot in China's competitive smartphone market as of early 2026, driven by a 28 per cent surge in iPhone shipments.
In April, Tesla's China-made vehicle sales (including exports) reached 79,478, a 36 per cent year-over-year increase, signalling a production rebound.
The top US business leaders will be allowed to mingle with their Chinese counterparts at an exclusive international business club, according to Chinese officials.
The global focus on the summit, however, would be on any possible outcome that could end the US-Israeli-Iran war and end the blockade of the Strait of Hormuz.
Ahead of Trump's visit, Iranian Foreign Minister Abbas Araghchi made his first visit to Beijing after the war and held talks with his Chinese counterpart Wang Yi.
The US watched his visit closely as China is the largest importer of Iranian oil and shares strategic defence ties with Tehran, and has considerable influence over Iran.
After talks with Araghchi, Wang called on Iran to reopen the Strait of Hormuz as soon as possible, even as it appreciated Tehran's commitment not to develop nuclear weapons, a prime demand of Trump to end the war.
Commenting on Wang-Araghchi talks, US Secretary of State Marco Rubio said, "I hope the Chinese tell him what he needs to be told. And that is what you are doing in the Strait, which is causing you to be globally isolated. You're the bad guy in this."
China's anxieties over the Gulf war increased, especially after Trump imposed a blockade of Iranian ports, restricting Iran's oil exports to China.
Bert Hoffman, former World Bank country director for China, said China wants the Iran war to end because it has many partners in the region, including Saudi Arabia, the UAE and Kuwait. "So they don't like to see wars, they like to have stability," he said.
In its editorial on Trump's visit, state-run Global Times said Xi has held multiple telephone conversations and meetings with him, which have helped correct the course of the bilateral relationship and steer it clear of hidden dangers at critical moments.
For China-US relations to truly stabilise and improve in the future, the most fundamental step is to fully and faithfully implement the important consensus reached by both leaders, it said.
From China's point of view, the Taiwan issue was expected to figure prominently in the talks.
Last week, China's Foreign Minister Wang told US Secretary of State Marco Rubio, during their telephone talks, that the US should make the right choice about the self-ruled Taiwan.
China claims Taiwan as part of its own and has been ramping up military pressure on the island with periodic military drills around the island.
VIDEO | Beijing: US President Donald Trump arrives in China for high stakes meeting with Chinese President Xi Jinping.
— Press Trust of India (@PTI_News) May 13, 2026
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