Light Period : What Are Symptoms, Causes , Risk Factors & Medical Help

A lot of factors can change a woman's menstrual cycle and cause light period. From body weight, stress, to medical conditions and others, an abnormal light period can set in. It is very important to know the reason.

There is typically no cause for alarm when the period is unusually light. This is because variations in the menstrual flow happen with each passing month, and sometimes, it is natural for the period to be lighter.

Pregnancy or a condition related to the hormones may be the reason behind having a light period sometimes. In the same way, spotting or coloured discharge may be mistaken for a light period. So, kindly consult private gynaecologist London to know exactly what you're experiencing.

Meanwhile, here in this post, you will understand how to spot a light period, what causes it, and when you should seek medical attention.

What are the symptoms of a light period?

It is estimated that around 2 to 3 tablespoon of blood is lost during a normal menstrual cycle. But this is different for different people. So, carefully note down when your period becomes lighter than normal. With the help of a menstrual cup, you can measure the amount of blood you produce each month.

When a menstrual period is light, it can be symptomised by:

  • A lesser duration than the normal
  • Need for fewer pads and tampons than the normal
  • A steady light flow replacing the usual heavy flow experienced within the first 1 to 2 days
  • Bleeding that looks like spotting over a few days rather than a steady flow

Often, symptoms of the premenstrual syndrome, including mood swings, back pain, and uterine cramping can be lowered by a light period.

What causes a light period?

Several factors can make your menstrual flow lighter than others. These include the following:


Throughout your lifetime, your menstrual cycle may not be consistent. It is typical for early periods to be lighter and involves spotting alone. This changes and becomes more regular when you get to your 20s and 30s.

Heavier and shorter periods may set in during your late 30s and 40s. It can also be that you may not have periods for some months only to experience a heavier period afterwards. During the days before menopause, menstrual flow may become lighter and more inconsistent.

No ovulation

Medically when the female body does not release an egg, it is termed anovulation. This condition can lead to irregular and lighter periods.

Not having sufficient body weight

Those who are underweight or lack enough bodyweight may experience very light or no period at all. This is caused by a reduction in body fat which affects the regular release of egg - known as ovulation.

Doing too much exercise may also be the reason for light or zero periods. It may also be connected to being underweight.


At pregnancy, the menstrual cycle will typically be absent. But it can happen that you may mistake implantation bleeding, which is an early pregnancy symptom for a light period.If you are sexually active and typically don't experience light period, you may want to test for pregnancy.

Medical conditions

Hormone-related issues like polycystic ovary syndrome (PCOS) and thyroid-related conditions can impact your period.


Your body's hormonal balance can be altered when you're stressed; affecting your normal menstrual period.

Light periods and birth control

In the course of taking contraception (birth control pills), there may be a reduction in the heaviness of period - it becomes lighter and lighter.

The lowering of the flow of blood could be caused by the low dose of hormone in birth control pills that don't trigger the uterus to develop a thick lining. Since this makes the uterine lining very thin, there isn't much to shed every month and as such you may have a light period.

Other things that can cause thinning of the uterus lining and consequently light period is when you're using hormonal IUD, contraceptive implant, or injection.

When the hormones begin to aid the regulation of period, you may experience some initial spotting between periods.

There are cases where people having a light period may get a recommendation from the doctor to take birth control in order to assist the regulation of their cycle. Certain kinds of contraception contain hormones that can regulate a woman's menstrual cycle.

What are the risk factors?

Often, people can have a light period without knowing the risk factor. But there are certain factors that can make light period to show up. These include:

Age - Women that are young are more likely to experience a light period

Breastfeeding - Though a natural thing, after giving birth, a woman may experience a delay in having her period back, or it can even make the period light when it starts again

Stress - The more the stress, the greater the impact on the hormonal level in the body

Polycystic ovary syndrome (PCOS) - A reproductive concern of this nature can have an effect on the hormonal level and menstrual period. You may want to speak with your doctor about personal risk factors that may affect how serious your period can be. Again you can get a PCOS treatment In London.

When should you seek medical help?

That your period is light may not really be a reason to worry. But if you notice your period being light over time, or even miss periods, you need to consult a healthcare provider or doctor.

Another condition under which you should seek medical attention is when you are experiencing light period and having other issues like pelvic pain all at once.

Key takeaways

It is important to know that many times, cases of a light period is not something that should be bothering you. There are several factors including birth control pills, exercise, diet, medical conditions and others that can trigger light period.

Take care to listen to your body. Should you be concerned about the length of your period, kindly see your doctor for more useful advice and help.

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