Caffeine stimulates your central nervous system and, when over-consumed, it could lead to disruption of sleep, feelings of anxiety and nervousness and mood swings.
And, as you’re on your period, you’re already prone to those symptoms, which could worsen due to caffeine. According to Flo, caffeine can also block a hormone, called adenosine, that can cause blood vessels to constrict, thereby slowing down blood flow.
However you’d apparently need to drink a whole load of matcha to feel any negative effects brought on by the caffeine, as the FDA explains that healthy adults can consume up to 400 milligrams of caffeine a day (which works out as around four cups of coffee) without risk to their health.
One cup of matcha tea contains even less caffeine than a cup of coffee – around 25 to 70mg per cup compared to 70 to 140mg in a cup of coffee.
Additionally, caffeine in matcha doesn’t affect you the same way it does in coffee.
Now, that’s not to say Syah is completely wrong, as too much of anything is not good for your body – a principle that applies to all kinds of food and drinks.
Other doctors’ verdicts
Dr Donald Grant, GP and Senior Clinical Advisor at The Independent Pharmacy, told Tyla: “Yes, high caffeine consumption can cause disruption to menstrual cycles, impacting the length and severity of periods. A 1999 study revealed that women with high caffeine consumption were more likely to experience shorter, but heavier periods. High caffeine intake can also raise cortisol levels, causing further disruption to the body’s hormonal balance, which can lead to irregular or missed periods.
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