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Harvard Medical School


Pilots, flight attendants have greater risk of radiation-related cancer death than other professions

A new study published in JAMA Internal Medicine found that pilots and flight attendants have statistically significantly higher rates of death from breast, central nervous system, and prostate cancers and melanoma. The study used a large dataset and accounted for various factors to determine the occupation's impact on mortality.

SourceHarvard Medical School·JournalJAMA Internal Medicine·DateAug 17, 2026

Studying viral proteins on a whole new scale

The new viral ORFeome tool allows researchers to analyze many thousands of viral proteins in a single experiment, expanding access to biologists who didn't train in virology. It identifies hundreds of viral proteins that interfere with immune response, providing a powerful foundation for understanding emerging viral threats.

SourceHarvard Medical School·JournalScience·DateJul 10, 2026

Scientists create first-ever ‘smell map’

Researchers have created a detailed diagram of smell receptors in the nose, revealing a highly organized receptor map that mirrors the organization of smell maps in the brain. The discovery sheds light on how information moves from the nose to the brain and could lead to therapies for loss of smell.

SourceHarvard Medical School·JournalCell·DateApr 28, 2026

Scientists create first-ever ‘smell map’

Researchers created a detailed diagram of smell receptors in the nose, revealing that they form horizontal stripes based on receptor type from top to bottom. The study provides foundational information for developing therapies for loss of smell and offers insights into how information moves from the nose to the brain.

SourceHarvard Medical School·JournalCell·DateApr 28, 2026

A large-scale look at the exposome

A large-scale study by Harvard Medical School researchers analyzed 20 years of data from the National Health and Nutrition Examination Survey to quantify the relationships between hundreds of environmental exposures and 305 clinically relevant health outcomes. The findings demonstrate that individual exposures have a moderate impact on...

SourceHarvard Medical School·JournalNature Medicine·DateApr 6, 2026

New insights into harmful mutations in sperm

A recent study led by Harvard Medical School researchers found that genetic changes creating identical sperm cells are more widespread than thought and linked to single-gene diseases. The team identified genes underlying these mutations, which can be passed onto offspring, leading to devastating disorders.

SourceHarvard Medical School·JournalNature·DateOct 14, 2025

An AI system with detailed diagnostic reasoning makes its case

Researchers at Harvard Medical School developed Dr. CaBot, an AI system that can generate a differential diagnosis and explain its nuanced reasoning like an expert diagnostician. The system reached a comparable final diagnosis to a human expert in a published case presentation, demonstrating its potential for medical educators and phys...

SourceHarvard Medical School·JournalNew England Journal of Medicine·DateOct 9, 2025

Deaths rose after hospitals were acquired by private equity

A nationwide study found patient death rates increased in emergency departments of U.S. hospitals acquired by private equity firms, with staffing cuts and salary reductions proposed as likely explanations. The researchers also found transfers of patients to other hospitals and shortened stays in intensive care units.

SourceHarvard Medical School·JournalAnnals of Internal Medicine·TypeData/statistical analysis·DateSep 22, 2025

How a small number of mutations can fuel outbreaks of western equine encephalitis virus

A single mutation in the spike protein of western equine encephalitis virus is enough to prevent it from attaching to human and horse cells. However, a change in the viral spike protein enables WEEV strains to attach to a different receptor, found on mammalian brain cells, which is shared by its cousin eastern equine encephalitis virus.

SourceHarvard Medical School·JournalCell·TypeExperimental study·DateApr 4, 2025

Study finds three new safe, effective ways to treat drug-resistant tuberculosis

A major clinical trial has identified three new safe and effective regimens for treating drug-resistant tuberculosis, offering faster, safer, and more accessible care. The new treatments show promise in reducing treatment duration and side effects, making them a significant breakthrough in the fight against this infectious disease.

SourceHarvard Medical School·JournalNew England Journal of Medicine·TypeRandomized controlled/clinical trial·DateJan 29, 2025

How cells get used to the familiar

Researchers found four molecular networks in ciliate and mammalian cells that exhibit hallmarks of habituation, suggesting single cells process and remember information over different time spans. This finding opens up new mysteries about how cells without brains manage complex behaviors.

SourceHarvard Medical School·JournalCurrent Biology·TypeComputational simulation/modeling·DateNov 19, 2024

Researchers harness AI to repurpose existing drugs for treatment of rare diseases

A new AI tool identified drug candidates for over 17,000 diseases, including conditions without treatments, and predicted potential side effects. The model was trained on a broader dataset than current models, enabling it to make more accurate predictions and offering a faster and more cost-effective way to develop therapies.

SourceHarvard Medical School·JournalNature Medicine·TypeComputational simulation/modeling·DateSep 25, 2024