April 2019 Health Briefs

Household Cleaning Products Affect Babies’ Guts and Weight

The heavy use of household cleaning disinfectants may contribute to changes in infant gut bacteria and weight gain, reports a new study in the Canadian Medical Association Journal. University of Alberta researchers collected fecal samples and studied the gut health of 757 babies between the ages of 3 and 4 months; then restudied the children at 1 and 3 years old. They found that children in households that used disinfectants at least once a week had higher body mass index (BMI) scores and elevated levels of Lachnospiraceae, gut microbes linked in other studies to insulin resistance and metabolic disorders. Babies in households that used vinegar or other eco-friendly cleaners had lower BMI scores and much lower levels of a family of bacteria that includes E. coli.

Smoking Bans Lower Blood Pressure

Non-smokers that live in areas that have banned smoking in public spaces such as restaurants, bars and workplaces have lower systolic blood pressure. In a Northwestern University study reported by the American Heart Association, blood pressure readings of 5,115 adults ages 18 to 30 in Birmingham, Chicago, Minneapolis and Oakland were taken over a 30-year period and correlated with changes in local laws that banned public smoking. A meaningful decrease in systolic blood pressure readings was found in non-smokers when no-smoking laws were enacted, indicating a reduction in heart disease risk.

Curcumin Boosts Fertility in Men

Sperm counts have plunged by half in the last 40 years among American and European men, according to a recent review of scientific studies. In a new doubleblind study of 56 infertile men, researchers at Iran’s Qazvin University of Medical Sciences found that curcumin, an active ingredient in turmeric, can boost sperm counts. Each day for 10 weeks, half of the men took 80 milligrams of curcumin nanomicelle, in which curcumin is better absorbed; the other 28 were given a placebo. The researchers found that the curcumin significantly boosted sperm count and motility.

Sugary Drinks Linked to Kidney Disease

Drinking lots of sugar-sweetened sodas and juices significantly increases the risk of chronic kidney disease, reports a new study from the Johns Hopkins Bloomberg School of Public Health. Using health questionnaires for 3,003 African-American adults in Jackson, Mississippi, covering a 13-year period, the researchers found that the top third of subjects, those consuming the most sugar-sweetened drinks, were 61 percent more likely to develop kidney disease than those in the bottom third.

Stress May Be Worse in the Evening

Acute, late-day stress may be harder on our bodies, say researchers at Japan’s Hokkaido University. They measured the levels of the stress hormone cortisol in 27 young, healthy volunteers, and then put them through 15 minutes of stressful events that included making a speech and doing mental math. Half of the volunteers were tested two hours after awakening, the other group 10 hours after awakening. The subjects’ levels of cortisol, which helps provide the body with energy in the face of a perceived need for fight or flight, rose strongly in the morning, but not in the evening, suggesting that the human body is more equipped to deal with stress early in the day and becomes more vulnerable later.