Food, Drinks & Substances

Can caffeine cause miscarriage

Can caffeine cause miscarriage

What the evidence says overall When people ask whether caffeine can cause miscarriage, they are usually asking whether an ordinary pregnancy habit is dangerous enough to change. The most balanced answer is that low to moderate intake has not been shown to be a major contributor to miscarriage. The American College of Obstetricians and Gynecologists […]

Is soda safe during pregnancy

Is soda safe during pregnancy

What soda contributes and what it does not Soda is not a nutrient-dense beverage. Compared with water, milk, or other lower-sugar options, it provides very little protein, fiber, vitamins, or minerals. That is why soda is usually discussed as an occasional discretionary drink rather than a health staple. In pregnancy, that distinction matters more because […]

Is coffee safe daily and energy drink risks

Is coffee safe daily and energy drink risks

Why pregnancy changes the caffeine question For a healthy adult, moderate caffeine intake is generally considered safe, and the FDA commonly cites 400 mg per day as the adult upper limit. Pregnancy is different. Caffeine crosses the placenta, the fetus has limited ability to metabolize it, and maternal clearance can slow as pregnancy progresses. Those […]

Fasting dieting and meal skipping during pregnancy

Fasting dieting and meal skipping during pregnancy

What counts as fasting, dieting, or meal skipping? Fasting can mean different things. In nutrition research, intermittent fasting often includes time-restricted eating, alternate-day fasting, or periodic very-low-calorie days. Harvard T.H. Chan School of Public Health summarizes these as weight-management approaches in nonpregnant adults, while also noting that human evidence is limited and that intermittent fasting […]

Alcohol during pregnancy: risks and fetal alcohol syndrome

Alcohol during pregnancy: risks and fetal alcohol syndrome

Why alcohol is risky in pregnancy Ethanol crosses the placenta readily. This means that when a pregnant person drinks alcohol, the fetus is exposed too. Unlike an adult, the fetus has immature metabolic pathways and limited ability to clear alcohol and its byproducts. Exposure can therefore interfere with cellular signaling, oxidative balance, placental function, nutrient […]

Caffeine during pregnancy: safety and limits

Caffeine during pregnancy: safety and limits

Why caffeine intake matters in pregnancy Caffeine is a methylxanthine stimulant that acts primarily by antagonizing adenosine receptors in the central nervous system. In everyday terms, it can increase alertness and reduce perceived fatigue. It also has cardiovascular and renal effects, including mild increases in heart rate, transient blood pressure changes in some individuals, and […]

Smoking and secondhand smoke risks during pregnancy

Smoking and secondhand smoke risks during pregnancy

Why tobacco smoke is uniquely concerning in pregnancy Tobacco smoke is a complex mixture of gases and particles. Nicotine causes vasoconstriction and can affect fetal neurodevelopmental pathways; carbon monoxide binds hemoglobin with high affinity, reducing oxygen transport; and many combustion byproducts contribute oxidative stress and inflammation. In pregnancy, these effects intersect with the placenta, the […]