Is coffee safe during pregnancy?

Coffee is not banned but should be limited. The European Food Safety Authority (EFSA) and the World Health Organization (WHO) recommend no more than 200 mg of caffeine per day during pregnancy and breastfeeding, from all sources combined. This FAQ is informational; any personal decision belongs with a midwife or doctor.

Caffeine crosses the placenta freely and reaches the foetus at concentrations similar to the mother's. With an immature liver and no functional CYP1A2 enzyme, the foetus clears caffeine very slowly. The half-life — 4 to 6 hours in adults — rises to around 15 hours in the third trimester and can reach 80 hours in a newborn. Foetal exposure is therefore cumulative. Epidemiological work (notably the UK cohort Cnattingius et al., BMJ 2008; meta-analysis Li et al., JAMA 2023) has linked maternal intake above 200-300 mg/day to a small increase in low-birth-weight risk, and at higher doses to miscarriage.

On this evidence base, EFSA set a 200 mg/day ceiling for pregnant and breastfeeding women in 2015 — a position echoed by the WHO, the UK's NHS, the American College of Obstetricians and Gynecologists (ACOG) and Belgium's SPF Santé. Practically, 200 mg equates to about two classic Italian espressos, one specialty double espresso, two 200 ml filter cups, four 5-minute black teas, or five cans of cola. Watch the hidden sources too: dark chocolate (20-60 mg per 100 g), energy drinks (80 mg a can), certain medications (paracetamol-caffeine, some migraine treatments).

During breastfeeding, caffeine appears in breast milk at roughly 1 % of the mother's plasma concentration — small in absolute terms, but the newborn hardly metabolises it. The usual advice is to drink coffee right after a feed to give the body time to clear it before the next, and to stay under 200 mg/day. Sensitive babies (premature, unsettled sleep) sometimes benefit from a further reduction.

For mothers keen to keep the ritual, three alternatives help. Specialty decaf (Swiss Water, CO2 or sugarcane EA) carries 1-7 mg per cup, practically negligible. Roasted chicory or barley infusions offer a coffee-like flavour with no caffeine. And the morning coffee can stay on the table: in Belgium, a single 150 mg filter cup leaves ample room under the limit. This page summarises the positions of EFSA, WHO, NHS and ACOG; it does not replace personalised obstetric care — please speak to your doctor or midwife about your specific situation.

Pregnancy and caffeine: the 200 mg/day ceiling