CMS cancels ACA marketplace coverage for 760,000 people; loneliness linked to fewer disease-free years; sensory nerves may remember allergens — Morning Medical Update

CMS cancels ACA marketplace coverage for 760,000 people

A freeze on new insurance brokers draws pushback from agents.

The Centers for Medicare & Medicaid Services (CMS) said it canceled about 315,000 Patient Protection and Affordable Care Act (ACA) marketplace enrollments covering more than 760,000 people, calling them unauthorized, and expects the move to return roughly $2.2 billion in subsidies. CMS also issued an interim final rule freezing new agent and broker registrations for the 2027 plan year and sent notices of intent to terminate to 569 agents and brokers who filed 2026 applications missing details such as Social Security numbers.

Vice President JD Vance, whose anti-fraud task force led the effort, said those removed either did not meet eligibility requirements or did not exist, The New York Times reported. Mychal Walker, president of the National Association of Benefits and Insurance Professionals, told Reuters a blanket moratorium "would punish legitimate professionals instead of targeting the bad actors responsible for fraud."

Loneliness linked to fewer disease-free years

A healthier lifestyle offset one social risk but not the other.

Adults who were both lonely and socially isolated lived fewer years free of major chronic disease than those who were neither, according to an observational study of 277,489 UK Biobank participants published in Nature Communications. At age 50, women with both had 2.4 fewer years free of physical diseases such as type 2 diabetes and cancer and 3.7 fewer years free of depression and anxiety than women with neither. For men, the gaps were 1.7 and 5.8 years.

A healthier lifestyle, based on diet, exercise, sleep, weight and smoking, narrowed the years lost to social isolation but not those lost to loneliness. The Tulane University-led team said the results show association, not cause, and noted that UK Biobank participants are not representative of the broader population. Here's the study and an accompanying news release.

Sensory nerves may remember allergens

The priming carried over to unrelated allergens.

Sensory neurons may carry a memory of earlier allergen exposures, according to a mouse study led by Mass General Brigham researchers and published in Immunity. One injection of papain, a protease allergen, switched on a signaling pathway called mTORC1 in the nerves and remodeled their mitochondria. A week later, primed mice scratched more and mounted stronger early allergic immune responses, even when challenged with house dust mite, an allergen with a different molecular structure.

Blocking the pathway erased the amplified response without affecting the initial one, and the primed state faded after about three weeks. "What is especially encouraging is that allergic memory in neurons faded with time in our models," said senior author Caroline L. Sokol, M.D., Ph.D. The authors noted there is not yet direct evidence of the effect in humans. Here's a news release.