Early follicular phase hormone levels in relation to patterns of alcohol, tobacco, and coffee use Jennifer Lucero, M.D., Bernard L Harlow, Ph.D., Robert L Barbieri, M.D., Patrick Sluss, Ph.D., Daniel W Cramer, M.D. Fertility and Sterility Volume 76, Issue 4, Pages 723-729 (October 2001) DOI: 10.1016/S0015-0282(01)02005-2
FIGURE 1 The effect of caffeine consumption on early follicular phase estradiol levels (log transformed) in women with low (<217.5 mg/d) and high (≥217.5 mg/d) cholesterol consumption. Lucero. Early follicular phase E2 and caffeine. Fertil Steril 2001. Fertility and Sterility 2001 76, 723-729DOI: (10.1016/S0015-0282(01)02005-2)