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“The researchers then examined how activity rhythms were related to peak oxygen uptake (a measure of cardiorespiratory fitness) and the energy required to walk at different speeds, while accounting for factors such as age, sex, race, height, and chronic health conditions.”

“A recent study found that smoke exposure is linked to changes in DNA methylation at 133 gene sites involved in immune regulation, cancer, and inflammation. Researchers compared blood samples from 31 people exposed to fire smoke with 29 non-exposed people who were matched by age and sex.”

“Then, they assessed the prevalence of type 2 diabetes, coronary artery disease, and stroke in each group, adjusting for differences in age, sex, healthcare access, and socioeconomic factors.”

“Evidence suggests that poor sleep reduces sex drive. The findings from this study suggest that getting even a few nights of poor sleep alters testosterone, energy levels, and mood in young, healthy men. Learn about other effects of sleep deprivation in this clip featuring Dr. Matthew Walker.”

“The findings indicated that physical activity was associated with a 50 percent lower risk of developing depression during a 10-year period compared to physical inactivity. Adjustments for age, sex, and education did not alter the results.”

“The authors combined data from seven studies with over 16,000 participants between the ages of 20 and 93 years collected between 1994 and 2008. Researchers measured body composition using bioelectrical impedance and adjusted for age and sex.”

“Their analysis held true even when taking the participants' demographics and other lifestyle factors into account, such as age, sex, education, alcohol intake, and others. These findings suggest that eating citrus fruit markedly reduces the risk of developing stomach cancer.”

According to the Dietary Guidelines for Americans, the recommendations for combined fiber intake vary according to age and sex (https://health.gov/sites/default/files/2019-09/2015-2020_Dietary_Guidelines.pdf).

“These findings were consistent across various groups, regardless of age, sex, job status, where they lived, history of gastrointestinal infection, endometriosis, family history of IBS, or other lifestyle habits.”

“They matched the cases with age- and sex-matched people without cancer ("controls") from the general population. Then, they gathered information about the participants' tattoo exposure and assessed the relationship between tattoos and lymphoma risk.”