News archive

ScienceDaily · 3 Nov 2026 · Research

In pregnant mice, immune activation at day 12.5 lined up with placental injury and autism-like traits in male fetuses only

Cold Spring Harbor Laboratory researchers reported in Science Advances that a virus-like immune stimulus in pregnant mice at day 12.5 was followed, within 24 hours, by developmental abnormalities in about one-third of fetuses. Across their experiments the autism-like traits showed up in male fetuses, while female fetuses kept developing. Affected males also had damage in spongiotrophoblasts, placental cells that help the mother tolerate the fetus. Lucas Cheadle said the mouse work points to maternal immune activation and the placenta as an early gateway in this model. It does not show that the same sequence causes autism in people. DOI 10.1126/sciadv.aeg0779. Not medical advice.

Read at ScienceDaily →Our summary♡ Save

• Women

• study

SciTechDaily · 2 Nov 2026 · Research

Support cells in brain tissue from 73 people with Parkinson's showed sex differences in energy-gene and myelin-gene activity

SciTechDaily, 2 November 2026, reported a Federation of European Neuroscience Societies Forum 2026 presentation from Julia Schulze-Hentrich. Brain tissue came from 73 people with Parkinson's disease (28 women and 45 men) and 24 people without it (9 women and 15 men). Gene activity in astrocytes, tied to mitochondria, differed by sex. Gene activity in oligodendrocytes, tied to myelin, also differed by sex. The group described shared stress responses plus these sex differences in support cells. Men are often reported to develop Parkinson's about 1.5 to 2 times as often as women; this tissue study does not by itself explain that gap, and it is not a therapy. Both sexes are in the sample, so the card is not tagged men only. Not medical advice.

Read at SciTechDaily →Our summary♡ Save

• Cognitive / dementia research

• study
• cognition

Medical Xpress · 2 Nov 2026 · Research

In 10,362 adults, night-to-night swings in sleep timing lined up with a higher risk of serious cardiovascular events

Preliminary American Heart Association research used more than 1 million nights from wrist devices in the NIH All of Us program: 10,362 adults, average age 53, about 69 percent women, none with heart disease or a metabolic condition at the start. Sleep was summarized over about six months and people were followed a median of 3.7 years. Night-to-night changes in sleep timing were linked to a 20 to 23 percent higher risk of serious cardiovascular events, including heart attack, stroke, and heart failure. Each extra 29 minutes of variation in sleep length was linked to a 24 percent higher risk of the combined cardiovascular outcome, a 29 percent higher risk of cardiomyopathy, described in the release as disease that leaves the heart unable to pump enough blood, and a 20 percent higher risk of heart failure. More complete sleep cycles were linked to a 28 percent lower risk of atrial arrhythmia. An unusually long sleep cycle was linked to a 55 percent higher risk of heart attack or stroke. The analysis adjusted for age, sex, race, education, income, smoking, alcohol use, cancer, and mental health conditions. Marie-Pierre St-Onge, who was not an author, said the abstract does not yet support a causal claim for sleep regularity on its own. Wearable stages are not a sleep-lab recording. This conference abstract is not a peer-reviewed study. Not medical advice.

Read at Medical Xpress →Our summary♡ Save

• Cardiovascular / lipids
• Metabolic / glucose
• Cancer
• Nutrition

• sleep
• study

Medical Xpress · 2 Nov 2026 · Research

In a U.S. telephone survey of 442,906 adults, reported cannabis use lined up with higher odds of cardiovascular disease, especially stroke

Preliminary American Heart Association research used 2020-2024 telephone surveys (BRFSS) from the states that asked about cannabis, 16 to 24 states a year, not the whole country. Among 442,906 U.S. adults (average age 49; about half women), people who reported cannabis use on 1 to 5 days a month had 23 percent higher odds of a reported cardiovascular-disease history than people who reported none. Use on 16 to 30 days a month had 21 percent higher odds. The stroke link was stronger: 40 percent higher odds at the lower frequency and 25 percent higher odds with heavy use. History was what a health professional had told them, including heart attack, stroke, or coronary heart disease. This is self-report, a conference abstract, and not a peer-reviewed study. It is not proof that cannabis causes those events. Not medical advice.

Read at Medical Xpress →Our summary♡ Save

• Cardiovascular / lipids

• study

Medical Xpress · 2 Nov 2026 · Research

A cuff-and-wrist model flagged hypertensive-crisis risk up to three days ahead in 4,190 adults with stage 2 high blood pressure

Preliminary American Heart Association research followed 4,190 adults ages 40 to 85 with stage 2 high blood pressure (at least 140/90 mm Hg; average age 62.4; 46 percent women and 54 percent men) at one hospital in Sindh, Pakistan, from January 2025 to January 2026. A model using a portable cuff and a wrist-worn device flagged hypertensive-crisis risk up to 72 hours ahead. Over 12 months, 312 people had 418 crises, about 7 percent of participants. Among people with a positive alert, about 32 percent had a crisis. Among people with no alert, 97.4 percent stayed crisis-free. This conference abstract is not a peer-reviewed study. It does not turn a wristband into a diagnosis. Not medical advice.

Read at Medical Xpress →Our summary♡ Save

• 40–59
• 60+
• Cardiovascular / lipids

• study

Medical Xpress · 2 Nov 2026 · Research

Chronic high blood pressure before pregnancy, and diabetes before pregnancy, lined up with a higher risk of severe fetal heart defects

Birth-certificate records for more than 44 million U.S. live births from 2018 to 2024, presented by Saad Ur Rahman as American Heart Association Scientific Sessions 2026 preliminary research, found nearly 28,000 infants (0.06 percent) with critical congenital heart disease. Chronic high blood pressure was associated with a 30 percent higher risk of that outcome than pregnancies with no high blood pressure. Type 1 or type 2 diabetes before pregnancy was associated with a 48 percent higher risk than no diabetes. Gestational high blood pressure was associated with an 8 percent higher likelihood. Eclampsia was not significantly associated. About 1.5 percent of the severe cases were linked to chronic or gestational high blood pressure. Maternal high blood pressure in these records rose from about 9.4 percent of pregnancies in 2018 to 13.9 percent in 2024. The analysis adjusted for demographics, diabetes, smoking, pregnancy history, and pregnancy length. It is observational, uses birth certificates, and does not show that changing blood pressure removes the risk. Absolute risk stays low. Clinician care before and during pregnancy is the point of the release. Not medical advice.

Read at Medical Xpress →Our summary♡ Save

• Women
• Cardiovascular / lipids
• Metabolic / glucose

• study

ScienceDaily · 1 Nov 2026 · Research

Long residential exposure to chlorpyrifos tracked more than double the Parkinson's risk in a California cohort

ScienceDaily posted this on 1 November 2026 from UCLA Health. Hasan and colleagues, with senior author Jeff Bronstein, report in Molecular Neurodegeneration. The release prints the journal citation as 2025; 21 (1), DOI 10.1186/s13024-025-00915-z. This card uses the 1 November 2026 news date and does not reconcile the year printed in the DOI. In the Parkinson's Environment and Genes study, 829 people with Parkinson's and 824 without it were compared. Prolonged residential exposure to chlorpyrifos was associated with more than 2.5 times the risk. The population comparison alone is not proof of cause. Address histories covered home and work, using California pesticide records. Mice that inhaled the chemical as an aerosol for 11 weeks developed movement problems, lost dopamine neurons, showed brain inflammation, and accumulated alpha-synuclein. In zebrafish, the chemical disrupted autophagy, the cell cleanup of unwanted proteins. Restoring that cleanup, or removing synuclein, protected neurons in those experiments. Bronstein said the work identifies chlorpyrifos specifically, not pesticides as a class, and that the animal mechanism makes the association look causal. He also pointed to possible future strategies. Those protective findings are from the lab, not a human therapy. Residential use was banned in the United States in 2001, with further agricultural restrictions in 2021. The chemical is still used on many crops in the United States and in other countries. Parkinson's affects nearly one million Americans. Not medical advice.

Read at ScienceDaily →Our summary♡ Save

• Cognitive / dementia research

• cognition
• inflammation
• study

Medical Xpress · 30 Oct 2026 · Research

A review of testosterone trials found no clear memory gain in postmenopausal women, and called the evidence too small to settle

Medical Xpress posted this on 30 October 2026. Aimee Spector, Alexandra Faulkner, and colleagues at University College London review testosterone and cognition in Reproduction and Fertility (DOI 10.1530/RAF-26-0080). They found five studies in postmenopausal women aged 41 to 65. Perimenopause was not included. A meta-analysis of three randomized trials covered 244 women. Doses were given daily, weekly, or monthly for 4 to 26 weeks. There was no statistically significant improvement in the cognitive scores they pooled, including executive function, verbal learning and memory, and visuospatial performance. Faulkner described this as a lack of sufficient evidence, not as evidence that testosterone has no effect. The British Menopause Society and the International Menopause Society support testosterone for low libido only, not for cognition. The review notes that prescribing has anecdotally risen in the UK National Health Service and in private clinics. Trial data came from Australia, Canada, the United States, and Sweden. Hormone use is clinician-only. This is not a recommendation to start, stop, or change a hormone. Not medical advice.

Read at Medical Xpress →Our summary♡ Save

• Women
• 40–59
• 60+
• Cognitive / dementia research
• Supplements
• Medicine
• Aging

• study
• cognition

EurekAlert · 30 Oct 2026 · Research

People who finished a cold-shower trial reported fewer sick days in a Basel doctoral study

EurekAlert posted this on 30 October 2026. It is a University of Basel report of a doctoral project by psychologist Lena Glaser, not a peer-reviewed journal paper. The notes that agree, including Swiss and Dutch coverage of the same report, describe 719 healthy adults aged 18 to 65 who were not already taking cold showers. For 12 weeks they showered as cold as the shower allowed. A control group kept their usual showers. Dropout was high in the first two weeks and then declined, which the report treats as habituation. People who remained said they felt better. That feeling is subjective. They reported feeling unwell on 26 percent fewer days and 31 percent fewer absences from work. For a 45-liter shower, dropping the water from 40 C to 15 C saves about 1.3 kilowatt-hours. The report estimates about 15 kg of CO2 per person over 12 weeks, on the order of 100 km of driving. It is not known whether people kept the habit afterward. Sex was not reported, and the release does not split results by age, so this card is not tagged to one age band. Self-report and dropout limit the result. It does not show that cold showers prevent illness. Not medical advice.

Read at EurekAlert →Our summary♡ Save

• study

SciTechDaily · 30 Oct 2026 · Research

A stent or an operation did not lift memory scores above usual care in tight carotid narrowing

SciTechDaily reported this on 30 October 2026. CREST-H, led by Randolph Marshall at Columbia, enrolled 291 people with severe carotid narrowing of at least 70 percent and no related symptoms. Cognition and brain blood flow were measured at the start and at one year. Thinking scores rose slightly in both groups. Adding a stent or an operation was no better for those scores than the care used alone. In the parent CREST-2 trial, adding a stent to that care cut strokes by about half compared with care alone, while an operation to remove the blockage did not. The cognition paper is JAMA, DOI 10.1001/jama.2026.13384. The page used here did not give the journal date. Funding includes NIH R01NS097876, and the parent trial U01NS080168, U01NS080165, and U01NS086872. Age and sex were not stated in the account used here. This is not advice to seek or refuse a procedure. Not medical advice.

Read at SciTechDaily →Our summary♡ Save

• Cardiovascular / lipids
• Cognitive / dementia research

• study
• cognition

EurekAlert · 29 Oct 2026 · Research

A ten-marker metabolic score was presented as a health signal at a scientific meeting

This is a meeting report, not a journal paper. A 29 October 2026 FAPESP release describes a talk by Joris Deelen of Leiden University Medical Center at FAPESP Week Netherlands. A score from blood samples of 44,000 volunteers in 12 European cohorts had 5,500 deaths in follow-up. With Brazilian student Gabriela Natalle Lopes, the group cut the score to ten routine blood markers and flipped the sign so a higher number means better health. Deelen said a one-point rise corresponds to an average 14-year delay before a first cardiometabolic disease. That figure is the speaker's claim at a meeting, not a journal result. He also said the score lines up with cognition, lung capacity, and handgrip. Changes in daily habits improved insulin, triglycerides, and body composition mainly when the starting score was below zero, not in the whole group. He described the score as about 40 percent genetic and about 60 percent habits and surroundings. Smoking was called the strongest negative behavior, and being more active lined up with a better score. Sex and exact age bands were not given. Not medical advice.

Read at EurekAlert →Our summary♡ Save

• Cardiovascular / lipids
• Metabolic / glucose
• Cognitive / dementia research

• commentary
• cognition