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J Mol Biol 428:37523775
Greater China
Caffeine significantly increases intraocular pressure in most people, especially when consumed in amounts of four or more cups a day.238 If you have glaucoma, this pressure increase can occur at half that amount.239 Experts believe that this results from changes in aqueous humor flow, and studies have shown a remarkable difference in the fluid dynamics of the eye between volunteers given caffeine and those given placebo.240 Perhaps even more serious (because it affects a greater number of people) is the decrease in microcirculation in the eye caused by caffeine
doi: 10.1289/ehp.11345 98
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