Early Menstruation: Could Vitamin C Be the Cause? - Obstetrics and Gynecology

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Menstruation has arrived two weeks early?


Recently, I have been in my ovulation period, and a few days ago, I noticed some brown discharge accompanied by a few brown streaks of blood.
Since I sometimes have incomplete menstrual flow, I didn't think much of it.
However, yesterday, I suddenly experienced a significant amount of bleeding.
Initially, it was a lot of brown discharge, but now it has turned into a large amount of deep red blood, similar to a menstrual period, just two weeks earlier than expected.
Recently, I took a vitamin C supplement given by my mother for about 4-5 days, one pill a day, but I haven't taken it for a week now.
I would like to know if taking vitamin C could have caused my period to arrive early.

Qi Er, 10~19 year old female. Ask Date: 2017/01/02

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, I apologize for not being able to provide a diagnosis based on your description.
It could be a case of pseudomenstrual ovulatory bleeding.
If you continue to experience discomfort, I recommend consulting a gynecologist.
Wishing you good health.

Reply Date: 2017/01/02

More Info


Vitamin C, also known as ascorbic acid, is a water-soluble vitamin that plays a crucial role in various bodily functions, including collagen synthesis, immune function, and antioxidant protection. However, its relationship with menstruation and menstrual cycles is not straightforward and can vary among individuals.

In your case, you mentioned experiencing early menstruation after taking Vitamin C for a few days. While there is no direct scientific evidence linking Vitamin C intake to changes in menstrual cycle timing, some anecdotal reports suggest that high doses of Vitamin C might influence menstrual patterns. This is primarily due to Vitamin C's role in hormone regulation and its potential effects on the uterine lining.

One of the proposed mechanisms is that Vitamin C can increase estrogen levels, which may lead to changes in the menstrual cycle. Estrogen is a key hormone in regulating the menstrual cycle, and fluctuations in its levels can result in variations in cycle length, flow, and timing. However, the doses of Vitamin C typically consumed through diet or supplements are generally not high enough to cause significant hormonal changes.

Moreover, stress, lifestyle changes, and other factors can also contribute to early menstruation. For instance, if you have experienced any recent stressors, changes in diet, or physical activity levels, these could also be influencing your menstrual cycle. It is essential to consider these factors alongside your Vitamin C intake.

In terms of the brown discharge you initially observed, it is not uncommon for women to experience spotting or brown discharge before their period, especially if there is any residual blood from a previous cycle. The sudden onset of heavy bleeding, however, could indicate a more significant change in your menstrual cycle, which may or may not be related to Vitamin C.

If you are concerned about the changes in your menstrual cycle, it is advisable to consult a healthcare professional. They can provide personalized advice and determine if any underlying conditions need to be addressed. It is also worth noting that while Vitamin C is generally considered safe, excessive intake can lead to gastrointestinal disturbances and other side effects, although it is unlikely to cause severe issues related to menstruation.

In summary, while there is no conclusive evidence that Vitamin C directly causes early menstruation, individual responses to supplements can vary. Factors such as hormonal balance, stress, and lifestyle changes should also be considered when evaluating changes in your menstrual cycle. If you continue to experience irregularities or have concerns, seeking medical advice is the best course of action.

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