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Epidemiology

All articles tagged with #epidemiology

Rich Nations See Obesity Rates Plateau or Dip, Global Study Finds
health11 days ago

Rich Nations See Obesity Rates Plateau or Dip, Global Study Finds

An international study analyzing data from 4,050 population studies (232 million participants) finds global obesity continues to rise overall but rates are plateauing or falling in several high‑income countries (e.g., US 40–43% and UK 27–30% in 2024), with trends varying by country and age. The results highlight the role of country‑specific social, economic, and policy factors and suggest wider use of weight‑loss medicines could influence future trajectories.

Obesity rises worldwide, accelerating fastest in poorer nations
health12 days ago

Obesity rises worldwide, accelerating fastest in poorer nations

A Nature News & Views piece summarizes 1980–2024 obesity trajectories across 200 countries, showing obesity has risen in every country but at different paces: growth, plateau, or decline patterns vary by income level, with developed nations more likely to plateau and poorer countries experiencing faster increases, underscoring a widening global health inequity highlighted by the NCD-RisC analysis.

health21 days ago

Daily Eggs May Cut Alzheimer’s Risk in Seniors, Large Study Suggests

A long-term observational study of 40,000 Adventist Health Study-2 participants linked with Medicare data found that eating eggs at least five days a week is associated with up to a 27% lower risk of developing Alzheimer’s disease in people 65 and older, with even smaller amounts linked to reduced risk. The study notes eggs’ nutrients—choline, lutein/zeaxanthin, omega-3s, and yolk phospholipids—may support brain health, and emphasizes eggs as part of a balanced diet; results are associative, not causal, and funding included the American Egg Board.

West Valley Parkinson's data review kicks off amid community concerns
local25 days ago

West Valley Parkinson's data review kicks off amid community concerns

Utah health officials have begun an early data review to determine whether there are higher-than-expected Parkinson's disease rates in a West Valley City neighborhood near 3500 South and 4800 West; officials emphasize this is surveillance, not an investigation, and no environmental link has yet been found, with a clearer picture expected in coming weeks.

Staying Hitched Linked to Lower Cancer Risk in Massive U.S. Study
health27 days ago

Staying Hitched Linked to Lower Cancer Risk in Massive U.S. Study

A large U.S. study of more than 100 million people across 12 states (2015–2022) found cancer rates were about 68% higher among never-married men and 83% higher among never-married women, suggesting marriage is linked to lower cancer risk—potentially due to social and financial support, healthier habits, and better treatment adherence—though the relationship is not universal, with notably higher HPV-related cancers among the unmarried.

Global outbreak-risk map flags 9.3% of land as highly vulnerable to deadly diseases
environment1 month ago

Global outbreak-risk map flags 9.3% of land as highly vulnerable to deadly diseases

A new global model using machine learning and satellite data maps epidemic-prone diseases across nearly every country, finding about 6.3% of land in the high-risk category and 3% in very high risk (9.3% total), with roughly 20% of people in medium risk. Hotspots cluster in Latin America and Oceania, and population density emerges as the strongest driver of outbreak risk. The study also assesses readiness, showing some regions face high risk but limited health infrastructure, while many high-income countries have stronger capacity. The map is intended to guide surveillance, preparedness, and rapid response for threats including Disease X, and the research was published in Science Advances.

Study flags unexpected diet association with lung cancer in young non-smokers
health1 month ago

Study flags unexpected diet association with lung cancer in young non-smokers

USC Keck researchers surveyed 187 young lung cancer patients (mostly non-smokers) and found they consumed more fruits, vegetables, and whole grains than the general population. The study notes an association, not causation, and raises the possibility of an environmental factor such as pesticide exposure in produce, calling for further research and consideration of related health policy.

Early-Adult Weight Gain Linked to Higher Lifetime Mortality, Study Finds
health1 month ago

Early-Adult Weight Gain Linked to Higher Lifetime Mortality, Study Finds

A Lund University study followed more than 600,000 people from age 17 to 60 and found that obesity onset in early adulthood (17–29) was linked to about 70% higher all-cause mortality during follow-up, driven largely by cardiovascular disease. The findings suggest the duration of obesity, rather than late-life weight gain, may drive risk, potentially via long-term insulin resistance and inflammation. Exercise and diet data weren’t analyzed, and there are sex-related nuances; the takeaway is to aim to prevent obesity early in life.

Prenatal Sterol-Pathway Drugs Linked to Higher Autism Risk, Large U.S. Study Finds
health-science1 month ago

Prenatal Sterol-Pathway Drugs Linked to Higher Autism Risk, Large U.S. Study Finds

A nationwide analysis of 6.14 million births found that prenatal exposure to sterol biosynthesis–inhibiting medications (SBIMs) is linked to a higher autism risk: 1.47× with at least one SBIM, and a 1.33× increase for each additional SBIM, reaching 2.33× when four or more are used. SBIM exposure rose from 4.3% of pregnancies in 2014 to 16.8% in 2023. The authors emphasize caution in prescribing during pregnancy and the need for safer alternatives, while noting these drugs remain essential for many adults.

GLP-1 Diabetes Drugs Linked to Higher Long-Term Cognitive Impairment Risk
health1 month ago

GLP-1 Diabetes Drugs Linked to Higher Long-Term Cognitive Impairment Risk

A propensity-matched retrospective study of nearly 65,000 adults with type 2 diabetes found that those treated with GLP-1 receptor agonists had a higher long-term risk of durable cognitive impairment over 10 years (2.6% vs 1.3%), with a hazard ratio of 2.74. The study shows an association, not causation, and further research is needed to determine whether GLP-1 therapy contributes to cognitive decline or reflects underlying risk factors.

Tiny study stirs fruit-cancer chatter, but big data still favor plants
health1 month ago

Tiny study stirs fruit-cancer chatter, but big data still favor plants

A 187-person, retrospective study of early-onset lung cancer (mostly non-smokers) found many patients reported high fruit/veg intake and speculated pesticides could be involved; however, this small study cannot prove causation and sits at odds with decades of large, prospective research that shows higher fruit/vegetable consumption is linked to lower or unchanged lung-cancer risk. Pesticide concerns exist, especially for farm workers, but there’s no evidence that normal dietary pesticide levels cause lung cancer in the general population. Read headlines with caution and rely on long-term evidence. Practical tips to reduce residues include washing produce and, when affordable, choosing organic for high-residue items. Overall, a plant-rich diet remains associated with better health outcomes, including lung health.

Never Married, Higher Cancer Risk Across Many Cancers, Large US Study Finds
health1 month ago

Never Married, Higher Cancer Risk Across Many Cancers, Large US Study Finds

A large U.S. study of more than 4 million cancer cases across 12 states (2015–2022) finds adults who have never been married carry significantly higher cancer risk than those who are or have been married, across nearly all major cancers and especially those linked to infections, smoking, and reproductive factors. Never-married men are about five times more likely to develop anal cancer and never-married women about three times more likely to get cervical cancer, with overall cancer risk about 70% higher for men and 85% higher for women in the never-married group. The study emphasizes social factors as cancer risk markers, not that marriage protects against cancer, and suggests tailored risk awareness and screening, though lifestyle confounding and the exclusion of long-term unmarried partners are limitations.

Never-Married Adults Show Higher Cancer Rates in Large US Study
health1 month ago

Never-Married Adults Show Higher Cancer Rates in Large US Study

A University of Miami analysis of over 4 million cancer cases across 12 US states (2015–2022) found never-married adults have higher cancer incidence than those who are married or formerly married—about 68% higher in men and 85% higher in women—though researchers caution this does not prove causation or that marriage protects against cancer. Larger differences appear for HPV-related cancers (anal cancer in men, cervical cancer in women) and are smaller for cancers with widespread screening. The study treats cohabiting partners as unmarried and is cross-sectional, so it signals associations rather than causal effects. Implications point to using marital status as a marker to target cancer risk awareness and screenings, while contexting limitations and other health factors.

Never-married status linked to higher cancer risk in large U.S. study
health1 month ago

Never-married status linked to higher cancer risk in large U.S. study

A large University of Miami study of more than 4 million Americans across 12 states finds that adults who have never been married are significantly more likely to develop cancer across major types, with men about 70% and women about 85% higher risk; anal cancer was notably higher for never-married men and cervical cancer higher for never-married women. Being married was linked to lower risks of ovarian and endometrial cancers. Researchers stress that marriage is not protective by itself and that social factors may reflect other risk factors; more research is needed.