Related Experiment Video
Updated: Jan 26, 2026

Caffeine Extraction, Enzymatic Activity and Gene Expression of Caffeine Synthase from Plant Cell Suspensions
Published on: October 2, 2018
Caffeine Intake During Pregnancy and Neonatal Anthropometric Parameters
Regina Wierzejska1, Mirosław Jarosz2, Barbara Wojda2
1Department of Nutrition and Dietetics, Clinic of Metabolic Diseases and Gastroenterology, Institute of Food and Nutrition, 02-903 Warsaw, Poland. rwierzejska@izz.waw.pl.
Abstract:
Caffeine is a psychoactive substance that may affect the normal course of pregnancy, therefore its intake during that time should not exceed 200 mg/day. The aim of this study was to evaluate caffeine intake among pregnant women from the Warsaw region. The study was conducted among 100 pregnant women who delivered at the Department of Obstetrics, Gynecology and Oncology, Medical University of Warsaw. Caffeine intake from coffee, tea, and energy drinks was measured using a questionnaire. Direct interviewing was used, with all interviews conducted by the same dietitian. Multiple regression analysis was used to investigate the relationship between caffeine intake and anthropometric measurements of the newborns. Mean caffeine intake among pregnant women was 68 ± 51 mg/day. Only 2% of the respondents exceeded the safe dose of 200 mg. Tea (mostly black) was the source of 63% of all caffeine. No relationships were found between caffeine intake and neonatal weight, length, or head and chest circumference (p > 0.05). Caffeine intake in our study population was relatively low and did not negatively affect fetal growth.
More Related Videos
Related Concept Videos
Regulation of Food Intake
Regulation of Water Intake
Wave Parameters
Distributions to Estimate Population Parameter
Noncompartmental Analysis: Miscellaneous Pharmacokinetic Parameters
One key aspect of the noncompartmental approach is determining a drug's total clearance. This can be done by dividing the drug dose by the area under the concentration-time curve from zero to infinity. The area under the concentration-time curve represents the drug's...
Dosage Regimens: Partial Pharmacokinetic Parameters

