Health
Dementia cases are on the rise — avoid these 12 risks to keep your brain healthy
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By Kayode Sanni-Arewa
It is a condition that can be caused by a number of diseases that gradually destroy nerve cells and damage the brain, resulting in a decline in cognitive functions, according to the World Health Organization.
With the advancement of medicine, science and technology, people are living longer lives and the world’s aging population is growing at an unprecedented rate, raising the risk of a larger cohort of people living with dementia
“As the global population of older adults continues to rise, the number of people living with dementia is also expected to grow, reaching approximately 139 million dementia cases by the year 2050,” according to a recent report. As of 2023, there were more than 55 million people with dementia globally, according to the WHO.
By 2050, the population of people aged 65 and older will double to 2.1 billion, according to the World Health Organization.
Dementia risks
“Dementia is currently the seventh leading cause of death and one of the major causes of disability and dependency among older people globally,” according to the WHO, with nearly 10 million new cases of dementia every year.
Although there is no cure for the condition, according to research published in 2023 by the WHO, psychologists and researchers are working to prevent its onset.
While age is still the strongest known risk factor for dementia, researchers have found a set of 12 “potentially modifiable risk factors,” according to The Lancet Commission’s 2020 report:
Less education
Hypertension
Hearing impairment
Smoking
Obesity
Depression
Physical inactivity
Diabetes
Low social contact
Excessive alcohol consumption
Traumatic brain injury
Air pollution
“Together the 12 modifiable risk factors account for around 40% of worldwide dementias, which consequently could theoretically be prevented or delayed,” according to The Lancet.
While socioeconomic status and education levels can impact the onset of dementia, particularly in early life, several other risks can be avoided, according to the study.
“What we currently know is — what’s good for your heart is good for your brain, and that’s because there are a lot of vascular risk factors for dementia,” Timothy Singham, Clinical Psychologist and Adjunct Senior Lecturer at the National University of Singapore, told CNBC Make It.
So, a lack of physical exercise, eating unhealthy foods, not getting enough sleep, drinking alcohol excessively as well as smoking puts a strain on your brain and risks developing future impairments, just like these pose a risk to one’s heart, said Singham.
While a healthy body can mitigate dementia risks, a healthy mind is no less important.
“We do know [that] people who have cumulative mental health symptoms during their lifetime, actually [have] an increased risk of dementia,” said Singham.
“If we see symptomatic improvement [to one’s mental health] throughout the life course, then that can decrease your chances of having dementia eventually.”
How to cut risks
Here are five key “protective factors” or things people can do to help prevent the onset of dementia:
Regular physical activity
Eating healthy
Building a healthy support network
Having good sleep hygiene
Find ways to regulate stress and emotions
It can be easy to get wrapped up in the quick pace of daily life, so it’s important to take breaks.
“Your mental health suffers really quickly if you’re not — physically active, you don’t get to breathe, you don’t get to see nature much, you’re cooped up in the office or at home all day,” Singham said.
Additionally, it is crucial to build a healthy support network, not just online, but also in-person.
“I think a lot of young people are [leaning on their] online social networks — but we need to not give up the face-to-face [meetups] with friends,” Ng Ai Ling, Deputy Director and Principal Counsellor at Viriya Community Services told CNBC Make It.
“The other thing I would encourage young people to do is have a very disciplined, good sleep hygiene because our brains really really need to rest,” Ng said. She suggests getting at least seven hours of sleep every night.
Lastly, finding ways to regulate emotions and stress is crucial. Finding professional help when required or leaning on your support network are ways to protect your mental health, in addition to the daily upkeep of maintaining a healthy diet, exercise and sleep.
Loved ones’ struggle
As dementia cases continue to rise, mental health professionals expect its impact to extend beyond just those who are directly affected.
“The caregiver themselves are struggling to understand the illness — you lose someone to the illness, and the person who you used to be able to relate to and communicate [with] is no longer the same,” Ng said.
Caregivers and loved ones may risk developing mental health problems such as anxiety, depression and insomnia, Ng explained.
“Suddenly — someone you’re familiar with, and that person is forgetting you, and [they are] unable to perform as [they did] before the illness … There is this emotional distress that you go through,” she said.
Given the challenging situation, it is also important for people around a dementia patient to take care of their own mental and physical health as well, experts said.
Health
Ebola: WHO releases additional $3.4m as death toll rises to 139
The World Health Organisation (WHO) has approved an additional $3.4 million to support emergency response efforts following the worsening Ebola outbreak in the Democratic Republic of the Congo (DRC) and Uganda, where suspected deaths have risen to 139.
WHO Director-General, Tedros Adhanom Ghebreyesus, announced on Wednesday during a media briefing in Geneva that the agency had declared the outbreak a Public Health Emergency of International Concern (PHEIC) amid growing fears of wider regional transmission.
Tedros said the declaration was made on Sunday under Article 12 of the International Health Regulations after consultations with health authorities in the DRC and Uganda, citing the need for urgent international action.
According to WHO, 51 Ebola cases have so far been confirmed in the DRC, particularly in the provinces of Ituri and North Kivu, including the cities of Bunia and Goma, while Uganda has recorded two confirmed cases in Kampala, including one death linked to travellers from the DRC.
The agency also confirmed that an American national who contracted the virus in the DRC had been transferred to Germany for treatment.
Tedros, however, warned that the outbreak was far more severe than confirmed figures indicate, with nearly 600 suspected cases and 139 suspected deaths already reported.
He said the outbreak had spread to several urban centres, while infections among health workers pointed to transmission within healthcare facilities.
The WHO chief identified insecurity, mass displacement and intense population movement in mining communities within eastern DRC as major factors heightening the risk of regional spread.
He noted that over 100,000 people had been displaced in Ituri Province following escalating violence since late 2025.
Tedros also expressed concern that the outbreak involves the Bundibugyo strain of Ebola, for which no approved vaccines or therapeutics currently exist.
“In light of all these risks, I decided it was urgent to act immediately to prevent more deaths and mobilise an effective international response,” he said.
He commended the governments of the DRC and Uganda for their cooperation, particularly Uganda’s decision to postpone the annual Martyrs’ Day celebrations, which typically attract millions of participants.
WHO said the additional $3.4 million approved from its Contingency Fund for Emergencies brings the organisation’s total emergency support funding for the outbreak to $3.9 million.
The agency added that response teams, medical supplies and emergency support personnel had already been deployed to affected areas as efforts intensify to contain the virus.
Health
WHO declares Ebola outbreak in DR Congo, Uganda global health emergency
The World Health Organization has declared the Ebola outbreak caused by the Bundibugyo virus strain in the Democratic Republic of the Congo and Uganda a Public Health Emergency of International Concern (PHEIC).
The global health body in a statement said the decision was based on the growing risk of international spread of the disease and the absence of approved vaccines or treatments specifically targeting the Bundibugyo virus strain.
WHO Director-General said the outbreak met the criteria for a global health emergency under the International Health Regulations, although it does not yet qualify as a pandemic emergency.
As of May 16, health authorities had recorded eight laboratory-confirmed cases, 246 suspected cases and 80 suspected deaths in Ituri Province of DR Congo, affecting Bunia, Rwampara and Mongbwalu health zones. Uganda also confirmed two cases in Kampala, including one death, involving travellers from DR Congo.
WHO said unusual clusters of deaths linked to symptoms consistent with Bundibugyo virus disease had also been reported across parts of Ituri and North Kivu provinces, while at least four healthcare workers had died from suspected viral haemorrhagic fever, raising fears of hospital-based transmission.
The agency warned that the true scale of the outbreak remained unclear due to limited epidemiological data, insecurity, population displacement and weak health systems in affected communities.
According to WHO, the high positivity rate from initial laboratory samples, increasing reports of suspected cases and deaths, and the detection of cases in Kampala indicate the outbreak could be significantly larger than currently reported.
WHO noted that unlike the Ebola Zaire strain, there are currently no approved vaccines or therapeutics specifically targeting the Bundibugyo virus strain.
The organisation said neighbouring countries sharing borders with DR Congo face a high risk of further spread because of population movement, trade activities and ongoing humanitarian challenges in the region.
WHO announced plans to convene an Emergency Committee under the International Health Regulations to advise on temporary recommendations for responding countries.
The global health agency urged DR Congo and Uganda to activate emergency response mechanisms, strengthen surveillance and laboratory testing, improve infection prevention measures in hospitals and intensify contact tracing and community engagement.
WHO also advised affected countries to implement screening at airports, seaports and land borders, isolate confirmed and suspected cases, and consider postponing mass gatherings until transmission is interrupted.
The organisation, however, warned countries against closing borders or imposing travel and trade restrictions, saying such measures lack scientific basis and could worsen the spread of the disease through unmonitored routes.
WHO further urged neighbouring countries to strengthen preparedness, establish rapid response teams and improve monitoring for unexplained deaths and suspected cases.
Health
World Hypertension Day: Nigerians living with deadly BP – May&Baker warns
The Managing Director and Chief Executive Officer of May & Baker Nigeria Plc, Pharm. Patrick Ajah, on Friday raised alarm over the growing burden of hypertension in Nigeria, warning that millions of Nigerians are living with dangerously high blood pressure without knowing it.
Ajah, who spoke in Lagos during the Walk for Life 2026 organised by the company to commemorate World Hypertension Day, also lamented that rising energy costs are hurting drug prices, as the company spends N170m monthly on factory power.
The event, themed “Controlling Hypertension Together,” featured a health walk, free blood pressure and blood sugar screening, medical consultations, fitness activities, and health talks in collaboration with the Ikeja 1 NYSC Medical CDS Group and other stakeholders.
Speaking during the exercise, Ajah described hypertension as a “silent killer,” disclosing that many Nigerians discovered during previous screenings had dangerously high blood pressure levels, including readings as high as 200 over 120.
“Many Nigerians are walking the streets every day without knowing that they have hypertension,” he said.
“Some of the results we see are frightening. We have seen cases where people’s blood pressure ranges from 200 over 120, which is almost a killer.”
He said the situation was particularly alarming among low-income earners and market women who rarely go for medical checks because of rising healthcare costs.
“Most market women are very hypertensive, but they don’t check. It is getting worse because many people cannot afford hospital bills anymore,” he stated.
According to him, worsening economic hardship and stress are contributing significantly to the rising cases of hypertension across the country.
“With the condition of the country, stress levels are high, and stress increases the tendency for hypertension. The burden is a lot more than it used to be,” Ajah added.
The May & Baker boss warned that hypertension becomes more dangerous when combined with diabetes, describing both conditions as a dangerous alliance responsible for increasing cases of stroke, kidney failure, and sudden deaths.
“In medical school, we were taught that hypertension and diabetes form a dangerous alliance. When somebody is hypertensive and diabetic, it kills faster,” he said.
“That is why we don’t just check blood pressure here, we also check blood sugar.”
Ajah stressed that hypertension treatment is lifelong and warned patients against abandoning medications once their blood pressure appears stable.
“People need to understand that hypertension is not like malaria that you treat and it disappears. Once diagnosed, especially above 40, you are likely going to be on medication for life,” he explained.
“Many people stop taking their drugs once their blood pressure becomes controlled. That is dangerous.”
He urged Nigerians, especially those aged 35 and above, to regularly monitor their blood pressure and blood sugar levels, reduce salt intake, exercise regularly, and maintain a healthy lifestyle.
Ajah also lamented the rising cost of drug production in Nigeria, revealing that soaring energy costs and infrastructure challenges are affecting pharmaceutical manufacturers and ultimately increasing medicine prices.
“Before 2023, we spent about N65 million monthly on power in our factory. Right now, it is costing about N170 million every month,” he disclosed.
“So whether we like it or not, those costs will affect medicine prices.”
He, however, commended the Federal Government for approving duty-free importation of pharmaceutical raw materials, saying the policy helped manufacturers avoid additional drug price increases.
“When the executive order came, we suspended a planned price increase. It probably saved about 10 to 15 per cent on medicine costs,” he said.
Ajah further called on government to improve healthcare infrastructure, make medicines more affordable and address the worsening brain drain in the health sector.
“These days, people get to hospitals and wait for hours before seeing doctors because many doctors have left the country. Government needs to do more to encourage them to stay.”
Speaking, the Chairman of Ikeja Local Government, Comrade Akeem Olalekan Dauda, commended May & Baker for the initiative and urged stronger collaboration between private organisations and government in promoting public health.
“This is public good governance. What you are doing is part of corporate social responsibility and I encourage you to continue partnering with government so our people can enjoy more healthcare support,” Dauda said.
One of the beneficiaries, Mrs. Bose Ayo, praised the organisers after receiving free medical screening and treatment during the outreach.
“I checked my blood pressure and sugar levels and everything is fine. The doctors also attended to my cough and gave me medication,” she said.
“I pray they continue doing this for people like us who cannot afford hospital bills.”
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