A recent study published in The Lancet Infectious Diseases has highlighted a concerning issue: despite a global reduction in deaths from diarrhoeal diseases, older adults, particularly in South Asia, remain highly vulnerable.
The research, conducted by the Institute for Health Metrics and Evaluation (IHME) as part of the Global Burden of Disease (GBD) analysis, reveals that while diarrhoeal deaths have dropped significantly from 2.9 million in 1990 to 1.2 million in 2021, older adults and children under five still account for the highest mortality rates.
High Mortality in the Elderly: In South Asia, adults aged 70 and above have the highest death rates, with 476 deaths per 100,000 people.
Regional Disparities: Wealthier nations reported less than one death per 100,000 children under five, while sub-Saharan Africa saw over 150 deaths in the same group.
Reduced Disease Burden: Disability-Adjusted Life Years (DALYs) linked to diarrhoeal diseases have dropped from 186 million in 1990 to 59 million in 2021.
Why Older Adults Are at Risk
According to the source Dr. Manisha Arora, a specialist in internal medicine at CK Birla Hospital, Delhi, explains that older adults face unique challenges due to declining immune function, a condition known as immunosenescence. Health issues like kidney or heart disease further complicate their ability to stay hydrated during diarrhoea.
“Older adults often have conditions like heart failure that limit their fluid intake, but hydration is critical during diarrhoea. This contradiction, along with reduced thirst and mobility, increases the risk of dehydration, kidney failure, and multi-organ complications,” says Dr. Arora.
In South Asia, factors like poor sanitation, lack of clean water, malnutrition, and inadequate healthcare make the elderly more susceptible. Social isolation and pre-existing conditions further worsen their situation.
To reduce diarrhoeal deaths among the elderly, particularly in vulnerable regions like South Asia, Dr. Arora suggests a multi-pronged strategy:
1. Improve Water and Sanitation: Safe drinking water and better hygiene are essential.
2. Strengthen Healthcare Access: Timely diagnosis and treatment can save lives.
3. Promote Vaccination: Vaccines against rotavirus and other pathogens can help prevent disease.
4. Education and Awareness: Caregivers and patients must understand the importance of hydration and early treatment.
5. Focused Elderly Care: Managing comorbidities and ensuring electrolyte balance during diarrhoea is crucial. While global progress in reducing diarrhoeal deaths is commendable, the risks faced by older adults highlight the need for targeted interventions. Dr. Arora emphasizes, “We must focus on improving access to healthcare, preventing dehydration, and implementing preventive measures to save lives among the elderly.”
– Rashmi M
