The ovary is among the first organs to show age-related declines in women. Researchers combined large human datasets with mouse experiments to test whether physical activity might alter that trajectory. The researchers first examined the relationship between self-reported physical activity and menopause in two large human datasets, then had female mice exercise regularly on a treadmill for one month while controls spent the same sessions on it without running. Afterward, they counted primordial follicles, the dormant follicles that contain immature eggs, and measured a hormone marker of ovaria... exercise hormones
Read moreAn after-work exercise session may not erase the metabolic effects of spending the rest of the workday seated. Researchers tested whether alternating between sitting and standing could improve metabolic responses to a meal the following day. Sixteen adults who worked desk jobs and sat more than nine hours a day tested three work patterns in their normal work environment. For two workdays, each participant either remained seated throughout the workday, followed the same sitting schedule plus a 60-minute moderate cycling workout on the second evening, or completed the workout while alternating 3... blood sugar exercise exercise snacks insulin insulin resistance metabolism muscle triglycerides
Read moreIrregular heart rhythms become more common with age, and there is ongoing debate about whether omega-3 fatty acid intake reduces the risk of atrial fibrillation (AFib) or may, in some cases, actually increase it. To address this uncertainty, researchers analyzed health data from the UK Biobank. The study included adults aged 40 to 69 who did not have AFib at baseline. 261,108 participants had blood tests measuring omega-3 levels, and 466,169 reported whether they used fish oil supplements. Participants were followed for an average of 12.7 years. When comparing the highest and lowest quintiles... heart disease omega-3
Read moreDr. Rhonda Patrick discusses protein needs, choline in pregnancy, urolithin A, melatonin's benefits and risks, and creatine's effects on liver health. ... rhonda pregnancy omega-3 melatonin fatty liver urolithin a creatine choline
Watch nowMaintaining oral health may play a more important role in brain aging than previously recognized. A new study from Korea followed middle-aged and older adults to see if oral health could help predict future memory problems. The study tracked more than 6,700 adults aged 45 and older without a diagnosis of mild cognitive impairment (MCI) or dementia, who answered questions about their oral health at the start of the study. Over the next four years, they took part in regular interviews that recorded any new physician diagnoses of MCI or dementia. The key measures were: Overall oral health, ass... dementia
Read moreCreatine helps supply energy to muscles during high-intensity exercise and is commonly used to boost performance and muscle mass. However, determining the most effective creatine supplementation protocol has proven challenging. A recent study found that combining creatine with dextrose for five days rapidly increases muscle total creatine, with continued consumption maintaining this high level. Researchers provided healthy young men with one of four creatine supplementation protocols: Group 1: Four doses of 5 grams of creatine daily for five days, followed by 5 grams daily for 28 days. Group... exercise muscle supplements
Read moreDr. Charles Raison discusses the role inflammation plays in the development of depression in response to illness and stress. ... depression exercise inflammation immune system behavior mental health psychedelic sauna
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