1. A Thyroid Irregularity
The thyroid gland, located in your neck, regulates your metabolism. It also interacts with many other systems in your body to keep things running smoothly. “If you’re dealing with any type of thyroid imbalance, whether it’s hypo- or hyperthyroidism, that can have implications for your period,” says Dweck. If you notice other symptoms of a thyroid disorder, check in with your doctor for an official diagnosis.
Just as weight loss can cause a woman to miss her period, being overweight can also affect a woman’s menstrual cycle.
Obesity and missed periods can sometimes signal that a woman has a medical condition, such as polycystic ovary syndrome (PCOS), so it is important for a woman to be correctly diagnosed by a doctor.
The doctor may recommend blood tests or an ultrasound to look at the ovaries to make sure that no underlying medical conditions are causing missed periods.
You already know stress can have a number of unpleasant side effects, like headaches, weight gain, and acne — and it can also affect your menstrual cycle. When you’re under physical or emotional stress, your body produces the stress hormones adrenaline and cortisol. Elevated levels force the brain to decide which bodily functions are essential and which are nonessential until the anxiety-inducing event is over. Things like blood flow to the muscles and oxygen to the lungs increase while others, like digestion and the reproductive system, may stop temporarily in extreme cases. When the reproductive cycle is delayed, so is your period.
4. Crappy Diet
Even if your weight is fairly average, a really crappy diet (i.e. Breakfast: nothing, Lunch: doner kebab, Dinner: 3 beers and a packet of fags, Midnight snack: Walkers roast chicken crisps and a Mars bar washed down with Coke) could be the cause of your late or skipped periods. A healthy diet is required for a healthy cycle to make sure your diet consists of plenty of fruit and veggies, proteins, fiber and healthy fats.
Any medication that influences hormone production, such as thyroid medication or steroids, can impact the menstrual cycle and cause it to be late as it can affect the delicate balance of all hormones within the body. Any change in the levels of your reproductive hormones can result in an irregular period.
6. Excessive exercise
Regular, moderate exercise is recommended as a treatment strategy for easing painful and negative symptoms of the cycle. However, extreme exercise can lead to menstrual cycle irregularities. The most severe example is a loss of the period in competitive or Olympic athletes. A recent study also showed that frequent intense exercise may be a bigger source of cycle irregularity than previously thought.