They looked at age, obesity, high blood pressure, diabetes, smoking, physical activity, caloric intake and cardiovascular disease. Since most participants in the Nurses' Health Study were white women, the investigators said that these results might not apply to men or to women of other ethnic groups.Įven when the researchers accounted for other health factors, the link between diet sodas and kidney function persisted. There was no connection between sugar-sweetened beverages and a decline in kidney function. But in the women who consumed diet soda, glomerular filtration rate decreased by 3mL per minute per year. Women who didn't drink sodas experienced a decline in glomerular filtration rate of about 1 mL per minute per year after age 40. But in diet-soda drinkers, the rate of decline was 3 times as much as for women who didn't drink diet sodas. With age, the glomerular filtration rate tends to decline a bit. The diet-soda drinkers experienced a drop in their glomerular filtration rate (an important measure of the kidney's function). Drinking two or more diet sodas, though, appeared to cause problems. More than 3,000 women (all nurses) have participated in the study for 20 years or more now the women's median age is 67 years.Īt the start of the study, all the women had healthy kidney function, according to Julie Lin, MD, MPH, assistant professor of medicine at Harvard Medical School and a physician at Brigham and Women's Hospital.ĭrinking one diet soda daily did not decrease kidney function more than normal. In fact, compared with women who did not drink diet soda, soda-drinking women had a 30% greater reduction in kidney function in 20 years. Kidney function declined over two decades in women who drank several diet sodas a day, according to researchers from the prestigious Nurses' Health Study. Kidney health may be one of those things. Now doctors conducting this study have reported that drinking a lot of sugar-free cola beverages or other carbonated soft drinks might have effects on health. However, it can also be addictive and may cause a wide range of side effects in some people.An important new finding has been reported from the Nurses' Health Study, which is a long term study that found that diets high in sodium (salt) were hard on the kidneys, and gave other information about heart disease, cancer risk factors, and the use of hormone treatments after menopause. SummaryĬaffeine consumption has been linked to improvements in metabolism, exercise performance and alertness. However, it can also come with negative side effects, especially for people who are sensitive to its effects.Ĭaffeine can be addictive, and some research indicates that genetic variations could cause people to respond differently to it ( 12, 13).Ĭaffeine intake has also been shown to affect mental health, with one study in 2,307 children associating increased caffeine consumption with higher levels of perceived anxiety and depression ( 14).Įxcess intake can also cause other side effects, including headaches, high blood pressure and sleep disturbances ( 15, 16, 17).Īdditionally, it’s recommended that women who are pregnant or breastfeeding limit their caffeine intake, as it may be linked to a higher risk of miscarriage and low birth weight ( 18, 19). In particular, research shows that it may increase metabolism, improve exercise performance and boost alertness ( 9, 10, 11). Caffeine consumption can have several benefits for your health.
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