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New Study Sheds Light on Life-Extending Impact of Kidney Transplants

The research finds that under the current U.S. kidney transplant system, recipients gain an average of 9.29 additional life-years

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Image by Mohamed Hassan from Pixabay

At any given time, approximately 100,000 people in the U.S. are on the waitlist for a kidney transplant, but only about one-fifth receive a new kidney each year, while others die waiting. A new study co-authored by an MIT economist adds fresh insight into this life-or-death issue, offering the most precise estimates yet of how kidney transplants extend patient lives—and how the current system might be optimized to save even more.

Published in the latest issue of Econometrica, the paper—“Choices and Outcomes in Assignment Mechanisms: The Allocation of Deceased Donor Kidneys”—is the work of Nikhil Agarwal, professor of economics at MIT; Charles Hodgson of Yale University; and Paulo Somaini of Stanford University.

“There’s always this question about how to take the scarce number of organs being donated and place them efficiently, and place them well,” said Agarwal, in a statement. He emphasized that the goal of the study is to inform, not advocate, contributing rigorous data to help shape future kidney allocation policies.

The research finds that under the current U.S. kidney transplant system, recipients gain an average of 9.29 additional life-years—a metric known as LYFT (life-years from transplantation). If kidneys were distributed randomly, that figure would fall to 7.54 years. However, by restructuring the matching system, the study estimates that the LYFT could reach as high as 14.08 years.

To reach these conclusions, the researchers used comprehensive data from the Organ Procurement and Transplantation Network, covering patients from 2000 to 2010, and tracked survival outcomes through February 2020. The study is the first of its kind to take a quasiexperimental approach, accounting for complexities such as patients’ health status and the choices they make when accepting transplant offers.

“The [previous] methodology of estimating what are the life-years benefits was not incorporating this selection issue,” said Agarwal. The study found that patients are more likely to accept kidneys from younger donors, those without hypertension, those who died from head trauma (often a sign of otherwise healthy organs), and donors with perfect tissue-type matches.

One key finding is that healthier patients tend to benefit more from transplants than sicker ones—a fact that could pose a challenge to current policies, which often prioritize patients who have spent the most time on the waitlist, or those in more dire health.

“You might think people who are the sickest and who are most likely to die without an organ are going to benefit the most from it [in added life-years],” Agarwal noted. “But there might be some other comorbidity or factor that made them sick, and their body’s going to take a toll on the new organ, so the benefits might not be as large.”

This creates a policy dilemma, as the researchers write: “Our results indicate … a dilemma rooted in the tension between these two goals”—maximizing life-years versus prioritizing the sickest patients.

Ultimately, Agarwal stresses that the study’s aim is not to advocate for a specific allocation model, but to provide tools for better policymaking. “I don’t necessarily think it’s my comparative advantage to make the ethical decisions,” he said, “but we can at least think about and quantify what some of the tradeoffs are.”

As the conversation around kidney transplant allocation continues, the study provides essential evidence to guide efforts in balancing ethics, efficiency, and patient outcomes.

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Dementia Risk Extends to Middle Age in Rural India, New Study Finds

A new study in rural Andhra Pradesh identifies probable dementia among adults aged 45–59, highlighting the importance of early attention to cognitive health and associated risk factors.

Jishnu P

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An elderly woman photographed indoors, representing the broader challenges associated with cognitive health and ageing. Image credit:Pexels

Dementia, commonly associated with older age, may affect people much earlier than generally recognised. A new study conducted in rural Andhra Pradesh has identified probable dementia among adults aged 45–59, drawing attention to the need to address cognitive health before individuals reach old age.

Published on October 19, 2026, in the Journal of Global Health, the study found that 3.4% of participants aged 45–59 screened positive for probable dementia. Among participants aged 60 and above, the proportion increased to 7.4%.

Titled Prevalence and determinants of probable dementia in rural India: a cross-sectional study in the APCAPS cohort, the research examined 2,163 adults aged 45 and above from 29 villages near Hyderabad. The researchers analysed data collected between 2021 and 2023 through the Andhra Pradesh Children and Parents Study (APCAPS) cohort.

The research team included investigators affiliated with the ICMR-National Institute of Nutrition, the Public Health Foundation of India, the London School of Hygiene and Tropical Medicine and Chiang Mai University.

Education, Occupation and Stroke Emerge as Key Factors

The researchers used the Brief Community Screening Instrument for Dementia (BCSI-D) to identify probable dementia. They also examined its association with educational attainment, occupation, household assets and cardiometabolic conditions, including diabetes, hypertension, cardiovascular disease and stroke.

One of the strongest associations emerged between stroke and probable dementia. Participants with a history of stroke had 3.77 times higher odds of screening positive for probable dementia than those without such a history.

Education also emerged as an important factor. Literate participants had approximately half the odds of probable dementia compared with illiterate participants. The adjusted odds ratio was 0.54, indicating a significant association between literacy and cognitive health.

Occupation showed another notable association. Participants who were unemployed or retired had 2.23 times higher odds of probable dementia than those engaged in agriculture or animal rearing.

However, the researchers cautioned that the study’s cross-sectional design does not establish that unemployment or retirement causes dementia. Cognitive difficulties may also contribute to individuals leaving employment.

Interestingly, the study did not find statistically significant associations between hypertension or diabetes and probable dementia. The researchers noted that the relatively small number of probable dementia cases and other factors could have influenced these findings. The absence of a significant association does not establish that these conditions have no effect on cognitive health.

Rural Communities Face a Growing Cognitive Health Challenge

The findings add to existing evidence on dementia prevalence in India. A nationwide study published in Alzheimer’s & Dementia in 2023, using data from the Longitudinal Ageing Study in India (LASI), estimated that 7.4% of Indians aged 60 and above were living with dementia, representing approximately 8.8 million people.

The national study also reported a higher prevalence in rural areas (8.4%) than in urban areas (5.3%), highlighting geographical differences in the burden of dementia.

The latest research extends this discussion by examining adults below 60, an age group that has received comparatively less attention in dementia research. Based on its findings, the researchers estimated that the 3.4% screening-positive rate among adults aged 45–59 could translate to approximately 8.1 million people nationally requiring further diagnostic evaluation. However, this is an illustrative projection based on a rural southern Indian cohort and should not be interpreted as a national prevalence estimate.

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Representative image.Image credit:Pexels

The researchers also acknowledged limitations in identifying dementia through screening instruments. A positive screening result does not constitute a clinical diagnosis. Differences in literacy and familiarity with formal cognitive assessments could influence screening performance, particularly in populations where educational opportunities are limited.

They called for longitudinal studies and clinical diagnostic confirmation to establish the prevalence and progression of dementia among middle-aged adults.

The findings highlight the importance of integrating cognitive health into broader public-health planning, particularly through greater attention to vascular risk factors and the needs of stroke survivors. As India’s population ages, the study suggests that dementia prevention and early identification may need to begin well before individuals enter older adulthood.

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FSSAI Moves to Restrict Added Sugars in Infant Foods, Citing Need for Stronger Nutritional Safeguards

FSSAI has proposed restricting the addition of sucrose and fructose to infant foods for babies up to six months. The draft amendment aims to strengthen nutritional safeguards.

Vaishnavi V S

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Mother feeding a newborn baby with a spoon, illustrating concerns around infant nutrition and feeding practices.
FSSAI has proposed prohibiting the addition of sucrose and fructose to food products intended for infants up to six months of age. Representational image. Image credit: Pragyan Bezbaruah/ Pexels

The first months of life leave little room for nutritional guesswork. An infant’s food must supply the energy and nutrients needed for growth, making the composition of commercial infant nutrition products a matter of public health. Whether manufacturers need to add particular sugars to these products is therefore an important regulatory question.

Research published in recent years has begun examining how added sugars enter infants’ diets, including through formula milk, and whether early exposure is associated with subsequent eating patterns and weight gain. Although the evidence does not establish that added sucrose or fructose in infant formula directly causes obesity, it has raised questions about the nutritional value of adding sugars when alternative carbohydrate sources are available.

Against this backdrop, the Food Safety and Standards Authority of India (FSSAI) has proposed prohibiting the addition of sucrose and fructose to food products intended for infants up to six months of age. The draft amendment, published in the Gazette of India on 16 October 2026, would tighten the existing rules governing the composition of these products.

Early Exposure to Added Sugars

An Indian study published in the Indian Journal of Community Medicine in 2021 examined the sugar and salt content of 114 commercially available infant formulas and baby foods. The researchers found that around 28% of the products had a high-sugar profile, while approximately 51% listed sugar or related ingredients among their first four ingredients.

The study covered products intended for children aged up to 24 months, including infant formulas and complementary foods. Its findings offer evidence that sugar content warrants scrutiny in India’s infant and young-child food market. However, the assessment relied on product labels and did not establish whether the products caused adverse health outcomes. It also did not demonstrate that infant formulas intended specifically for babies under six months routinely contained added sucrose or fructose.

Research elsewhere has examined possible links between added sugars in infant formula and early growth. A 2025 study published in The Journal of Nutrition followed 234 infants from predominantly low-income households in the United States. Researchers assessed dietary intake at six, nine and 12 months and found an association between higher added-sugar intake from formula and higher weight-for-length scores.

For every additional 10 grams of added sugar consumed daily through formula, weight-for-length scores increased by an average of 0.060. The study was observational, so it cannot establish that sugar caused the difference. Its findings also cannot be directly generalised to Indian infants.

A separate study published in Frontiers in Nutrition in 2023 examined dietary data from 95 infants and toddlers aged nine to under 16 months. It found an association between added sugars consumed through infant formula and sugar-sweetened beverage consumption later in infancy. The researchers did not establish a significant association between formula-derived added sugars and added-sugar intake from table foods. The small sample and cross-sectional design limit the conclusions that can be drawn.

These studies examine different aspects of early sugar exposure: the composition of products available in India, associations with infant weight and possible links with later dietary patterns. None establishes that the proposed restriction will prevent childhood obesity. They do, however, provide grounds for examining whether particular sugars need to be added to products intended for very young infants.

Infant’s Food: Why the First Six Months Matter

The World Health Organization (WHO) and UNICEF recommend exclusive breastfeeding during the first six months of life, followed by the introduction of appropriate complementary foods at around six months while breastfeeding continues.

Infant's food: Infant drinking milk from a feeding bottle held by an adult.
FSSAI has proposed restricting the addition of sucrose and fructose to food products intended for infants up to six months, as part of efforts to strengthen infant nutrition standards in India. Representational image. Image credit: hartono subagio/ Pexels

For infants who require an alternative to breast milk, appropriately formulated infant formula can provide essential nutrition. Its carbohydrate composition must meet nutritional requirements for growth and development. The question for regulators is whether adding particular sugars serves a necessary nutritional purpose in products designed for this age group.

WHO’s 2023 guideline on complementary feeding recommends that children aged six to 23 months should not consume foods high in sugar, salt and trans fats. Its evidence review identified associations between sugar-sweetened beverage consumption during infancy and later obesity in some studies, although the certainty of the evidence was low. The recommendation concerns the broader diet of children aged six months and older; it does not specifically establish the effects of sucrose or fructose in infant formula.

The distinction between naturally occurring sugars and added sugars is equally important. Milk naturally contains lactose, which provides energy. Sucrose and fructose may instead be introduced as ingredients during product formulation. Their use needs to be assessed against the nutritional requirements of the intended age group.

What the FSSAI Amendment Proposes

Under the Food Safety and Standards (Foods for Infant Nutrition) Regulations, 2020, lactose and glucose polymers are the preferred carbohydrate sources in infant nutrition products. The existing rules permit sucrose and/or fructose when required as a carbohydrate source, subject to prescribed limits.

The draft Food Safety and Standards (Foods for Infant Nutrition) Amendment Regulations, 2026, proposes prohibiting the addition of sucrose and fructose to products intended for infants up to six months of age. This would remove the existing allowance for these two sugars in products for this age group. FSSAI has invited objections and suggestions from stakeholders within 60 days from the date on which copies of the relevant Gazette notification are made available to the public. The submissions will be considered before the amendment is finalised.

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NMC Directs Medical Colleges to Set Up Patient Safety Committees

The National Medical Commission has directed medical colleges and medical institutions to establish patient safety committees, designate nodal officers and strengthen procedures to prevent avoidable harm.

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NMC: Medical professionals in protective equipment review documents during a patient safety meeting.
Medical professionals review documents during a meeting, highlighting the importance of coordinated safety practices in healthcare institutions. Representational image. Image credit: Dave Gracia/ Pexels

The National Medical Commission (NMC) has directed medical colleges and medical institutions across India to establish Patient Safety Committees or Cells and designate Patient Safety Nodal Officers to strengthen safety practices and reduce preventable harm in healthcare settings.

The Commission asked the heads of medical institutions to share the composition of their committees and the details of the designated nodal officers with the National Patient Safety Secretariat (NPSS) under the Directorate General of Health Services (DGHS).

The directive follows a communication dated May 8, 2026, from the Additional Director General of Health Services in the Union Ministry of Health and Family Welfare. It seeks to strengthen the adoption of patient safety protocols and standard operating procedures across medical institutions.

NMC’s Multidisciplinary Oversight

The proposed committee will be chaired by the director, head of the institution or medical superintendent. Its membership must include representatives from relevant medical specialties and the patient safety domains identified by the NPSS. Institutions are also advised to designate a nodal officer with sufficient seniority and authority to coordinate safety initiatives.

The framework covers 11 patient safety domains, including medication safety, surgical safety, blood transfusion safety, medical device safety, laboratory and diagnostic safety, infection prevention and control, healthcare-associated infections, antimicrobial resistance, patient and family engagement, vaccine and injection safety, and facility safety. It also encompasses operational research in patient safety and safety in AYUSH services.

The scope extends beyond clinical treatment to areas such as biomedical waste management, fire safety, structural safety and environmental safety. Nursing, hospital administration and other relevant professionals can contribute to the committee’s work.

From Protocols to Institutional Accountability

The directive places responsibility for patient safety within an organised institutional framework. Rather than leaving safety measures to individual departments or healthcare professionals, the proposed mechanism brings clinical, diagnostic and administrative functions under coordinated oversight.

The committee’s terms of reference include reviewing patient safety incidents and near misses, analysing their causes, promoting reporting and recommending corrective and preventive measures. Such reviews can help institutions identify weaknesses in procedures and address risks before they result in further harm.

The effectiveness of these committees will depend on how consistently institutions implement safety protocols, review incidents and act on their findings. Establishing a committee is an administrative step; sustained monitoring and corrective action are essential to translating the framework into safer care.

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