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Some fertility treatments may raise Kawasaki disease risk in children

A large-scale study in Japan, led by researchers from the University of Osaka and the Osaka Women's and Children's Hospital, has found that certain fertility treatments are associated with an increased risk of Kawasaki disease before age five, although the association differed by treatment type.

3 Sep 2026

Scientists develop lab-grown heart tissue model for heart failure

Scientists study the underlying causes of a disease or test new potential drugs in animal models or cells obtained from human biopsy specimens before clinical trials.

2 Sep 2026

Researchers found one childhood behavior linked to folic acid use before pregnancy

Researchers analyzed 646 children aged 2–8 years and their 563 mothers to examine whether maternal folic acid supplementation before conception was associated with childhood behavioral difficulties. Preconception supplementation was associated with a 34% lower risk of peer relationship problems, while no significant associations were found for total behavioral difficulties, emotional, conduct, hyperactivity/inattention, or prosocial problems.

1 Sep 2026

Lifestyle factors aggravate genetic causes of male infertility, study finds

Lifestyle factors can worsen the effects of genetic causes of male infertility, finds new research that could help explain why men carrying similar genetic mutations often experience different levels of fertility impairment.

31 Aug 2026

Paternal valproate use not linked to offspring neurodevelopmental risks

Use of the antiseizure drug valproate by fathers before conception is not associated with neurodevelopmental disorders like autism or attention-deficit/hyperactivity disorder (ADHD) in their children, according to a new study published August 19, 2026, in Neurology®, an official journal of the American Academy of Neurology.

19 Aug 2026

Prenatal exposure to higher water fluoride levels associated with lower child cognition

Pregnant mothers who lived in neighborhoods where public drinking water fluoride levels were near or above the current U.S. recommended levels tended to have children who scored lower on tests of fluid reasoning as fluoride levels increased, according to a new study supported by the National Institutes of Health's Environmental influences on Child Health Outcomes (ECHO) Program.

18 Aug 2026

Childhood overweight linked to lower childbirth rates later in reproductive life

Women with childhood overweight or obesity trajectories had lower hazards of childbirth from their mid-20s onward, with the strongest associations emerging after age 30. Childhood BMI trajectories were generally not associated with diagnosed infertility, suggesting that biological infertility alone may not explain the reduced childbirth rates.

11 Aug 2026

Father's diet before conception impacts baby's body composition

A father's diet can affect his children's health and body composition before they are even conceived. A study of 43 triads of fathers, mothers, and newborns treated in the public healthcare system of Ribeirão Preto in the state of São Paulo, Brazil, demonstrated this.

28 Jul 2026

Early PFAS exposure linked to childhood intestinal inflammation

Researchers at the Icahn School of Medicine at Mount Sinai have found that exposure to per- and polyfluoroalkyl substances (PFAS), commonly known as "forever chemicals," during pregnancy and early life is associated with increased intestinal inflammation during childhood.

16 Jul 2026

Cold-exposed mothers pass metabolic protection to male rat offspring through milk

Maternal cold exposure during early pregnancy improved glucose control and reduced liver fat in male rat offspring, with benefits persisting into late adulthood. The findings implicate a breast milk LCA, gut microbiota, and Th17 immune pathway, while human cohort data showed an observational link between winter conception and lower MASLD risk.

12 Jul 2026

GLP-1 exposure in pregnancy does not clearly raise major birth defect risk

A systematic review and meta-analysis of seven cohort studies involving more than 40,000 GLP-1 receptor agonist-exposed pregnancies found no statistically significant increase in major congenital malformations or several other adverse pregnancy outcomes. However, the evidence was low or very low certainty, and a urinary malformation signal based on unadjusted data requires cautious interpretation.

10 Jul 2026

New Mount Sinai center focuses on advancing personalized treatments for peanut allergy

Researchers at the Icahn School of Medicine at Mount Sinai have been awarded a five-year, $7.2 million grant from the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health (NIH), to establish a new Asthma and Allergic Diseases Cooperative Research Center focused on advancing personalized treatment strategies for peanut allergy.

7 Jul 2026

Some statins may increase erectile dysfunction risk

Research indicates that certain statins, particularly atorvastatin and simvastatin, may elevate the risk of erectile dysfunction, impacting men's health.

6 Jul 2026

Genetics play a bigger role than pregnancy in childhood obesity risk

Genetic factors primarily explain the link between parental and childhood BMI, with maternal obesity impacting birth weight more than later childhood obesity.

1 Jul 2026

Could your birth characteristics influence colorectal cancer risk?

A California study links birth and parental factors to early-onset colorectal cancer risk, highlighting male sex and Hispanic ethnicity as key contributors.

26 Jun 2026

Parental genes rather than pregnancy weight influence childhood body mass index

The link between parents' body mass index (BMI) and their children's BMI in childhood is driven largely by genetic inheritance, rather than by any direct biological effects of parental weight during pregnancy, a new study suggests.

23 Jun 2026

Psychologist warns DNA testing kits can bring unexpected risks

DNA testing kits are often gifted for Father's Day, Christmas and special occasions. The idea of learning more about yourself and unearthing some long-forgotten family history is certainly appealing for many, but a psychologist has warned that these presents can come with profound psychological implications.

19 Jun 2026

PMOS rethink reframes a common hormone disorder as a whole-body disease

A new review reframes PCOS, now proposed as PMOS, as a systemic endocrine and metabolic disorder shaped by genetic, epigenetic, ovarian, metabolic, and neuroendocrine pathways. It highlights why inconsistent diagnosis and symptom-focused care have limited progress, while targeted therapies, biomarkers, machine learning, and organ-on-chip models may support more personalized treatment.

18 Jun 2026

Men's fertility-friendly underwear may be briefs without benefits

A narrative review found that tight-fitting underwear may modestly raise scrotal temperature and is inconsistently linked to lower sperm production measures. However, current evidence does not show that switching to looser underwear improves real-world fertility outcomes.

17 Jun 2026

New EHR-based marker flags transplant patients at high risk for organ rejection

A new multicenter study led by researchers at the Icahn School of Medicine at Mount Sinai suggests that a novel electronic health record-based marker can help clinicians identify transplant patients at high risk for organ rejection due to not taking their medications as prescribed-and intervene before the rejection happens.

15 Jun 2026