Caffeine levels at some of the high street coffee shops exceed the recommended 200mg level and could be dangerous for pregnant women.

Caffeine overdose can cause toxicity leading to headaches, chest pain, anxiety, increased heart rate and abdominal cramping in expectant mothers. FSA warns that too much caffeine could result in miscarriage or a low birth weight baby, which can further increase the risk of some health conditions for the baby like hypertension, type-2 diabetes and heart diseases in later life.
The findings are published in the Royal Society of Chemistry's Food and Function journal.
Source-Medindia