How much average caffeine good for per day

How much average caffeine good for per day

How much average caffeine good for per day.The average daily intake of 50 mg of caffeine during pregnancy is equivalent to half a cup of coffee a day, which may cause fetal growth retardation!

Mothers-to-be expecting a new life: A recent analysis by a team of the National Institutes of Health (NIH) shows that mothers-to-be consume an average of 50 mg of caffeine per day, which is the amount of half a cup of coffee a day. Lead to fetal growth retardation!

This analysis included more than 2,000 expectant mothers and found that compared with not taking caffeine, expectant mothers consume 50 mg of caffeine a day during pregnancy, which is related to the baby’s lighter weight at birth and the smaller arms and thighs. It seems Mothers-to-be may have to abstain from coffee completely during pregnancy [1]. This analysis was published on JAMA Network Open.

How much average caffeine good for per day
How much average caffeine good for per day

You can keep the coffee cup, and maybe you have to stop the coffee

Whether or not to drink coffee during pregnancy and how much coffee is considered safe has been a major controversy over the years. In 2010, the American Society of Obstetrics and Gynecology recommended that it is safe for expectant mothers to consume 200 mg of caffeine per day. The WHO later recommended an upper limit of 300 mg per day.

However, whether this safety line is really safe, various studies have considered different indicators, and the conclusions are quite inconsistent. The latest Meta-analysis last year even stated that ” there is no safe upper limit for drinking coffee during pregnancy , “so expectant mothers can refrain from drinking coffee. Just don’t drink [2].

The analysis conducted by the National Institute of Child Health and Human Development under the NIH is the first analysis focusing on fetal development indicators. The data source for the analysis is from 2009 to 2013, and there were 2055 expectant mothers at 10-13 weeks of pregnancy. Took part in a cohort study.

How much average caffeine good for per day
How much average caffeine good for per day

The study requires expectant mothers to take blood at baseline to test the levels of caffeine and the main metabolite of caffeine—1,7-dimethyl xanthine, combined with the self-reported caffeine intake of the expectant mothers. To evaluate the relationship between caffeine intake and fetal development indicators.

Some other drinks also contain caffeine, so they should be counted when reporting

(How much average caffeine good for per day)

Judging from the actual test data, American mothers-to-be cannot drink too much coffee. Only 35.7% of the participants reported that their daily caffeine intake was ≥50 mg, which is only half a cup a day, and 41.6% said they did not drink at all…

However, regardless of whether it is based on the blood caffeine concentration or the self-reported situation of mothers-to-be, too much caffeine intake is related to the decline of fetal weight, arm and thigh circumferences, and other development-related indicators. According to the analysis of blood caffeine concentration, then The highest concentration group is also related to the decline of fetal head circumference and body length after birth.

(How much average caffeine good for per day)
How much average caffeine good for per day
How much average caffeine good for per day

Specific decline

Although it seems that the weight has dropped by tens of grams, the head circumference, body length, and other indicators have decreased by less than 1 cm, and the fluctuation range is not very large. Still, on the one hand, this is the data of the fetus and needs to be converted to a relative level. On the other hand, the research team also pointed out. This is based on the premise that most expectant mothers only drink half a cup of coffee a day.

(How much average caffeine good for per day)

Previous studies have shown that within one hour after ingesting half a cup of coffee, the caffeine concentration in the body will reach 1859ng/mL, which is nearly three times that of the highest concentration group (658.8ng/mL) in this study [3]. If you are used to drinking coffee, 2-3 cups should be normal that day, and the caffeine concentration may remain high.

For the reasons why caffeine affects fetal development indicators, the research team also gave some possible explanations. For example, caffeine may cause uterine and placental vasoconstriction, affect the fetus’s blood supply and delay development, or caffeine disrupts the mother’s body—hormone levels, which may have a more profound impact on the fetus after birth.

Although the author of the paper, Jessica Gleason, said that the long-term effects of caffeine on the fetus are not yet confirmed, it is prudent to limit intake during pregnancy. Now they treat their children as treasures. If there is a problem with drinking coffee, parents shouldn’t regret their deaths? Mothers-to-be should drink two fewer glasses in October.

(How much average caffeine good for per day)

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