Final answer:
Joan stopped her caffeine intake after learning she was pregnant to avoid potential risks, experiencing withdrawal symptoms as a result.
Step-by-step explanation:
When Joan found out she was pregnant, she stopped drinking caffeine to avoid any potential risks to her pregnancy, even though she experienced tiredness and caffeine withdrawal headaches. Caffeine is a central nervous system stimulant and although its consumption in moderate amounts is widely regarded as safe for non-pregnant individuals, it can lead to problems such as sleep disruption and acts as a diuretic. Pregnant individuals are often advised to limit caffeine intake due to the potential but unconfirmed risks to the developing fetus. The described situation with Joan appears to be an act of caution in response to possible health concerns associated with caffeine use during pregnancy.
Although caffeine is considered relatively safe for most people, it can cause sleep disruptions and act as a diuretic. In the case of pregnancy, it is advised to avoid excessive caffeine consumption to reduce the risk of potential harm to the baby. Even though Joan experienced tiredness and caffeine headaches, her choice to stop consuming caffeine demonstrates her prioritization of the baby's well-being.
By avoiding caffeine, Joan reduces the risk of potential complications that may arise from caffeine consumption during pregnancy.