Heart infarction caffeine

An acute lateral-wall myocardial infarction was reported in a 55-year-old woman with a 1-year history of use of a weight loss product containing 300 mg Citrus aurantium (no other description provided) as well as 30 mg caffeine (misidentified as guararanine [sic]) and 30 mg green tea (no other description). The patient also reported a nearly 40-year tobacco-smoking habit (IVl packs per day), high caffeine intake from cola, coffee, and tea, and a preexisting heart murmur (Nykamp et al. 2004). 

Epidemiological studies designed to establish a relationship between caffeine intake and the incidences of myocardial infarction, mortality from ischaemic heart disease, or cerebrovascular accidents have provided conflicting results and have failed to establish a significant correlation. 

---