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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.

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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.

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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

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Smoking

Obesity

Depression

Physical inactivity

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Diabetes

Low social contact

Excessive alcohol consumption

Traumatic brain injury

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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.

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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.”

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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

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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.

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“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.

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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.

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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.

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Health

3 deaths recorded as Benue govt confirm 5 cases of Lassa Fever outbreak

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The Benue State Government has officially declared a Lassa fever outbreak after confirming three deaths from five confirmed cases, amidst 40 suspected cases.

The announcement, made by the Commissioner of Health and Human Services, Dr. Yanmar Ortese, at a press conference in Makurdi, underscores the severity of the situation and the urgent need for decisive action.

Dr. Ortese disclosed that the three fatalities, representing a 60% Case Fatality Rate (CFR), prompted a comprehensive risk assessment that led to the formal declaration of the outbreak.

“This represents a Case Fatality Rate (CFR) of 60%, and in light of these alarming figures, a comprehensive risk analysis was conducted, and today (Monday), we officially declare a Lassa fever outbreak in Benue State,” he stated.

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The commissioner emphasized that the declaration serves as a critical call to action, demanding immediate, coordinated, and collaborative efforts to protect communities and effectively manage the outbreak.

He urged residents to adhere to preventive measures and seek prompt medical attention if they experience symptoms suggestive of Lassa fever.

The state government is mobilizing resources and coordinating with relevant health agencies to contain the spread of the disease and provide necessary support to affected individuals and communities.

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Lassa Outbreak: NCDC deploy essential resources to combat issue in Bauchi State

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The Nigeria Centre for Disease Control and Prevention (NCDC) has reported a significant rise in Lassa fever cases, with 80 deaths and 413 confirmed cases across 11 states during Epidemiological Week 6 (February 3–9, 2025). Bauchi State has emerged as a focal point in the ongoing outbreak, with a large number of cases reported, leading to heightened concerns about the virus’s spread.

According to the NCDC, the case fatality rate (CFR) has increased to 19.4%, compared to 17.5% during the same period last year. Bauchi, along with Ondo and Edo states, accounts for the majority of confirmed cases, contributing to 73% of the total reported infections. This surge in cases has raised alarms as the state grapples with the challenges of containing the virus and preventing further fatalities.

While the number of new cases has decreased from 68 in Week 5 to 54 in Week 6, the high fatality rate remains a significant concern. The NCDC reports that the majority of affected individuals are between the ages of 21 and 30, with a male-to-female ratio of 1:0.8. Bauchi has been identified as one of the high-risk areas, with increased efforts being made to improve surveillance, contact tracing, and healthcare worker training in the region.

The NCDC has deployed National Rapid Response Teams (NRRT) to Bauchi and neighboring states to enhance Lassa fever case management. These teams are working to provide essential medical supplies such as personal protective equipment (PPEs), Ribavirin, and thermometers, along with strengthening the response capabilities of local healthcare facilities.

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Bauchi’s experience highlights some of the ongoing challenges in managing Lassa fever outbreaks, including delayed case presentations and poor health-seeking behavior in rural communities. Limited awareness and high treatment costs have also been identified as major barriers to effective control. As a result, the NCDC is focusing on community sensitization and raising awareness about early symptoms and the importance of seeking prompt medical care.

The NCDC has partnered with the World Health Organisation (WHO), Médecins Sans Frontières (MSF), and the International Research Centre of Excellence (IRCE) to improve diagnosis, treatment, and overall outbreak response in Bauchi and other affected states.

To further curb the spread of the virus, the NCDC has announced a nationwide rodent control and awareness campaign, in collaboration with Breakthrough Action Nigeria (BA-N). The campaign aims to educate communities on the risks of rodent exposure and the importance of proper food storage and hygiene practices.

The NCDC urges residents of Bauchi and other affected states to take preventive measures, including maintaining proper hygiene, avoiding contact with rodents, and seeking medical attention early if symptoms such as fever, sore throat, or unexplained bleeding occur. The public is also advised to stay informed by visiting the NCDC website or calling the toll-free line: 6232.

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FG to employ 28,000 health workers affected by USAID freeze

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The Federal Government has announced plans to retain 28,000 health workers whose salaries were previously covered by the United States Agency for International Development (USAID), whose activities have been halted by US President Donald Trump.

Nigeria’s Coordinating Minister of Health and Social Welfare, Muhammad Pate, while speaking on Channels Television’s Hard Copy programme, on Friday, announced that the government is working to absorb the health workers into the country’s healthcare system and reduce reliance on foreign aid.

Mr Pate acknowledged the significant contribution of the US government to Nigeria’s healthcare sector, particularly in the areas of HIV, Tuberculosis, and Malaria.

He, however, emphasised that Nigeria is determined to take ownership of its healthcare sector and reduce its dependence on external aid.

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“There are health workers, 28,000 of them, who were being paid through US government support. While it has been appreciated, those health workers are Nigerians. We have to find ways to transit them,” he said.

Apart from suspending the USAID which supports healthcare and other development activities across the world, President Trump has also halted the President’s Emergency Plan for AIDS Relief (PEPFAR), which supports the global fight against HIV/AIDS.

Following his inauguration on 20 January, President Trump signed multiple executive orders affecting global health funding and significantly impacting developing countries like Nigeria that rely on US assistance for health financing.

Mr Trump signed an order to halt the disbursement of foreign aid to any country for three months. The implementation of this order halted the US global health efforts, including PEPFAR, in low and middle-income countries around the world.

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Although PEPFAR was issued a limited waiver a week later, allowing it to restart some services, the situation has remained fluid. PEPFAR is a major programme through which HIV interventions in Nigeria are funded.

The situation was also worsened by the US government’s decision to suspend USAID’s activities. The agency implements many US health programmes in Nigeria and other developing countries.

All USAID interventions in Nigeria and across the world have been suspended with the American president’s team, led by billionaire Elon Musk, saying they are auditing the agency to check waste and corruption in the system.

To mitigate the impact of the US policy shift, the Nigerian Senate recently allocated an additional N300 billion to the health sector in the 2025 budget. This additional budgetary allocation is expected to take care of the 28,000 health workers, among other issues in the sector.

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According to Mr Pate, about 70 per cent of the country’s total health expenditure comes from private sources, including out-of-pocket payments by citizens, while only 30 per cent is publicly financed.

“Our total health spends in Nigeria, the total health expenditure: 30 per cent is public, 70 per cent is private,” he said, emphasising the financial burden on individuals seeking medical care.

While external assistance has played a role in supporting healthcare programmes, the minister noted that it is not the primary source of Nigeria’s health funding.

“The component of overseas development assistance for health is not the largest chunk of our health expenditure,” he stated.

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However, the reliance on foreign aid for critical services such as HIV, TB, and malaria has made the country vulnerable to shifts in donor policies, as seen with the recent changes in US government funding.

Mr Pate stressed the need for increased domestic investment in healthcare, citing President Bola Tinubu’s Renewed Hope Agenda, which prioritises human capital development and increased healthcare funding.

He highlighted the government’s recent approval of nearly $1 billion to improve health service delivery across the country.

“We’ve seen deliberate efforts to mobilise resources to invest in health. Just last week, the Federal Executive Council approved almost a billion dollars in terms of financing for the programme. That is a significant resource that states will implement. It’s a programme for results that will deliver better, but it will take time,” he said.

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Mr Pate further highlighted that the government is working to address Nigeria’s heavy dependence on imports for its pharmaceutical needs, noting that the country imports the vast majority of its medical supplies.

“Can you believe that more than 70 per cent of our drugs, we import with foreign exchange that we didn’t have? So, if we can flip it over time. 99 per cent of our medical devices, we import them,” he said.

He acknowledged that reversing this trend will not happen overnight but emphasised that the government is committed to changing the trajectory.

He pointed to efforts aimed at increasing local production of essential medical commodities, including antibiotics, as part of a broader strategy to strengthen Nigeria’s healthcare system.

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“Now, if we flip that over time, that is not going to take place overnight, but we have to be on that path,” he added.

“Healthcare is not cheap. Quality healthcare is not cheap. You have to invest in it. We as a country had not invested in it, and yet we had been asking for the highest quality health.”

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