What Are The Reasons For Late Periods?

Rebekah Pais

Rebekah Pais
Jul 2023

2 min read
Reasons For Late Periods

Table of content

Priya: Hey, I was wondering if you’ve ever experienced late periods? Mine is almost a week late, and I’ve been searching for reasons for late periods.
Simran: Oh, yeah, I’ve had that happen before. It can be totally normal sometimes! Stress can mess with your cycle, and I remember once I had a late period after a hectic week at work.
Priya: Hmm, that could be it. I’ve been really stressed with my exams and all. But I’m not pregnant, so that’s a relief.
Simran: Stress can definitely do that! Also, changes in weight or intense exercise can cause late periods too. Have you been going through any of that?
Priya: Actually, yeah, I’ve been trying to lose weight and working out more lately. Maybe that’s affecting it as well.
Simran: It’s very likely then. Your body might just need some time to adjust. But if it keeps happening or you’re concerned, it wouldn’t hurt to check with a doctor, just to be sure.
Priya: You’re right. I’ll wait a bit and see if it regulates, but if not, I’ll make an appointment. Thanks for the advice!

If you’re facing such an issue, then you’re in the right spot! We have some important information to share when it comes to delayed periods. 

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What Are The Reasons For Late Periods?

Late periods, also known as delayed menstruation or missed menstrual cycles, can be caused by various factors. It’s important to note that occasional irregularities in the menstrual cycle are common and not always a cause for concern. 

However, if you experience persistent irregularities or have concerns about your menstrual cycle, it’s best to consult a healthcare professional to rule out any underlying health issues. 

Some common reasons for late periods include:

1. Pregnancy

  • Pregnancy is one of the most common causes of late periods. 
  • When a woman becomes pregnant, the fertilized egg implants itself in the uterus, and this process triggers hormonal changes in the body to support the pregnancy. 
  • These hormonal changes can prevent the shedding of the uterine lining, which is what causes menstrual bleeding during a normal menstrual cycle.

2. Stress

  • Yes, stress can be a significant factor leading to late or irregular periods but can be managed if you try yoga for stress.
  • When you experience stress, whether it’s due to emotional, physical, or mental factors, your body releases stress hormones like cortisol and adrenaline. 
  • These hormones can interfere with the normal functioning of the reproductive hormones, such as estrogen and progesterone, which regulate the menstrual cycle.

3. Hormonal Imbalance

  • Yes, hormonal imbalance can indeed be a cause of late periods or irregular menstrual cycles. 
  • The menstrual cycle is regulated by a delicate interplay of various hormones, including estrogen, progesterone, luteinizing hormone (LH), and follicle-stimulating hormone (FSH). 
  • Any disruption in the normal production or functioning of these hormones can lead to menstrual irregularities, including late or missed periods.

4. Weight Changes

  • Adipose tissue (body fat) produces estrogen, and an increase in body fat can lead to higher estrogen levels. However, you must read a lot about how to reduce body fat naturally
  • Excess estrogen can disrupt the hormonal balance and interfere with normal ovulation and menstruation, potentially leading to late or irregular periods.

5. Birth Control

  • Different types of birth control can affect the hormonal balance in the body, which in turn can influence the regularity of the menstrual cycle. 
  • Some common examples of birth control methods that can impact menstruation include Hormonal Contraceptives, Emergency Contraception, Hormonal Implant, etc.

6. Perimenopause

  • Yes, perimenopause can be a cause of late periods or changes in menstrual cycles. 
  • Perimenopause is the transitional phase that occurs before menopause, and it typically begins several years before menopause itself. 
  • During perimenopause, a woman’s hormone levels, particularly estrogen, and progesterone, start to fluctuate, leading to various changes in the menstrual cycle. 
  • These hormonal fluctuations can cause menstrual changes like Irregular Periods, Heavier or Lighter Periods, and Shorter or Longer Periods, however, they can be treated with diet for menopause.

7. Excessive Exercise

  • Intense and prolonged physical activity, especially in athletes or individuals with rigorous workout routines, can impact the hormonal balance in the body, leading to disruptions in the menstrual cycle. 
  • Excessive exercise can result in hormonal changes like Reduced Leptin Levels, High Cortisol Levels, Suppressed Gonadotropin-Releasing Hormone (GnRH)

8. Medications

  • Certain hormonal medications, such as oral contraceptives (birth control pills), patches, injections, and hormonal intrauterine devices (IUDs), are deliberately designed to regulate the menstrual cycle. 
  • These medications can cause changes in the timing and flow of periods. 

9. Underlying Medical Conditions

  • Various health conditions can impact the hormonal balance and reproductive system, leading to disruptions in the menstrual cycle. 
  • Some common underlying medical conditions that can affect menstruation include Polycystic Ovary Syndrome (PCOS), Thyroid Disorders, Reproductive System Disorders, etc.

10. Travel

  • When you travel across different time zones, your body may experience jet lag, a temporary mismatch between your internal body clock and the local time at your travel destination. 
  • This in turn may affect the hormonal balance, which may impact the regularity of the menstrual cycle.

What Are The Reasons For Late Periods In Teenage

Late periods or irregular menstrual cycles are relatively common among teenage girls, especially within the first few years after menstruation begins. However, this can be managed with an effective diet plan for teens.

Several factors can contribute as reasons for late periods in teenage:

1. Puberty Is The No. 1 Reasons For Late Periods

During the early stages of puberty, the body may take some time to establish a regular hormonal pattern, and this can result in irregular or late periods. The reproductive system is still maturing, and it may take several months or even a few years for the menstrual cycle to become more consistent.

2. Immaturity Of The Reproductive System

In the initial stages of menstruation, a teenager’s reproductive system may not be fully matured. It can take some time for the ovaries to develop a regular ovulation pattern, resulting in late or irregular periods.

3. Stress

Adolescence can be a stressful time with academic pressures, social changes, and emotional challenges. Stress can disrupt hormonal balance and affect the regularity of the menstrual cycle. It is very important to address certain teenage behavior problems as well to combat the following:

4. Weight Changes

Significant weight gain or weight loss can impact hormone levels and disrupt the menstrual cycle in teenage girls

  • Weight Gain: Significant weight gain can lead to an increase in body fat, which can result in higher estrogen levels. Elevated estrogen levels can affect the hormonal regulation of the menstrual cycle, potentially leading to irregular periods or delayed menstruation.
  • Weight Loss: On the other hand, sudden or excessive weight loss can lead to a decrease in body fat, which may cause a decrease in estrogen production. Low estrogen levels can also disrupt the hormonal balance and interfere with the normal menstrual cycle, leading to late periods or even the absence of periods.
  • Eating Disorders: Some teenage girls may struggle with emotional disorders like anorexia nervosa or bulimia, which can have severe effects on the reproductive system and menstrual health. These disorders often involve extreme weight changes and can result in irregular or absent periods.

5. Polycystic Ovary Syndrome (PCOS)

While less common, some teenage girls may develop PCOS, a hormonal disorder that can lead to irregular periods, among other symptoms. PCOS is more commonly diagnosed during the late teens or early adulthood, but its symptoms can start to manifest during adolescence.

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Lifestyle Changes That Could Be The Reasons For Late Periods 

Several lifestyle changes can cause late periods or irregular menstrual cycles. These changes can impact hormonal balance and the regularity of the menstrual cycle. Some common lifestyle factors that can lead to late periods include:

1. Diet Changes Can Be One Of The Reasons For Late Periods

Changes in dietary habits or extreme diets can affect hormone levels and menstrual regularity. Inadequate intake of essential nutrients, such as iron rich foods, zinc, and certain vitamins, can disrupt hormone production and affect the regularity of the menstrual cycle.

2. Sleep Disruptions

This can impact the body’s circadian rhythm, which is the internal 24-hour biological clock that regulates various physiological processes, including hormone secretion. Irregular circadian rhythms can affect the timing of ovulation and menstruation.

3. Smoking And Alcohol Consumption

Tobacco and excessive alcohol consumption can impact hormone levels and menstrual health. Moreover, additionally, smoking has been linked to an increased risk of certain reproductive health conditions, such as polycystic ovary syndrome (PCOS) and early menopause, which can contribute to menstrual irregularities.

4. Emotional Well Being Is Also One Of The Reasons For Late Periods

Emotional factors, such as grief, anxiety, or depression symptoms, can affect hormone production and menstrual cycles. Practicing relaxation techniques, mindfulness, regular exercise, and seeking support from friends, family, or mental health professionals can help cope with emotional challenges and promote hormonal balance.

Wrapping It Up For Reasons For Late Periods

Maintain a well-balanced diet with essential nutrients to support hormonal balance and overall health. Engage in regular physical activity to support overall well-being and promote hormonal regulation. Avoid excessive and intense exercise, as it can disrupt the menstrual cycle. 

Maintaining a healthy lifestyle that includes avoiding smoking, limiting alcohol consumption, eating a balanced diet, getting regular exercise, and managing stress can help support hormonal balance and menstrual health.

If you have concerns about your menstrual cycle or experience persistent late periods, it’s advisable to consult a healthcare professional for a comprehensive evaluation and appropriate guidance.

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Frequently Asked Questions

What Are The Reasons For Late Periods?

Late periods, also known as delayed menstruation or missed menstrual cycles, can be caused by various factors. However, if you experience persistent irregularities or have concerns about your menstrual cycle, it’s best to consult a healthcare professional to rule out any underlying health issues. Some common reasons for late periods include:

  1. Pregnancy
  2. Stress
  3. Hormonal Imbalance
  4. Weight Changes
  5. Birth Control
  6. Perimenopause

Can Stress Cause Early Period?

Yes, stress can cause an early period in some individuals. Chronic or acute stress can lead to the release of stress hormones like cortisol, which can disrupt the hormonal balance and trigger changes in the menstrual cycle. However, it’s important to note that stress can affect individuals differently, and not everyone will experience early periods in response to stress.

Is It Normal To Have Late Period Occasionally?

Yes, occasional late periods can be normal, especially during times of stress, illness, or hormonal fluctuations. However, if late periods become a recurring issue or are accompanied by other concerning symptoms, it’s advisable to seek medical advice.

What Are Some Lifestyle Factors That Can Be Reasons For Late Periods?

Lifestyle factors that can cause late periods include stress, excessive exercise, significant weight changes, travel, smoking, alcohol consumption, and changes in diet.

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We’re never leaving you hanging with doubts, queries, as well as confusing questions. We understand how all this information gets really overwhelming as well as a little confusing on your way to a healthy lifestyle. Hence, you can always contact us at any time as our experts are here to guide you 24/7. Also, we will help you achieve your weight loss goals.


This blog post was written to help you to make healthy and better food choices altogether. So, be aware and take care. The important thing to consider is your own health before starting a diet that is restrictive. Always seek advice from a doctor/dietitian before starting if you have any concerns.

Eat Healthy, Live Healthy as well as Enjoy a long happy life

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