Irregular cycles is one of the commonest presenting symptom of any females. In young age we have seen as early as 15, 17 ,19, 20 years, irregular periods might be more to do with lifestyle, or stress levels of education, exercise pattern. Diet pattern fatty food, junk foods, aerated water, sometimes stale food. Why is this increasing in younger age? Because the junk food is increased in young age only in middle age say upto 38 years or so is seen very rampantly. One could be diet, lifestyle, low exercise or no exercise, hypothyroidism. Hypothyroidism at middle age will cause a lot of hormonal imbalance and it will cause Irregular cycles . The diet, the stress, low or no exercise. Thyroid hyperthyroidism in particular will lead to Irregular cycles . The common reasons for Irregular cycles is unjustified , irrational use of medicines which can postpone their cycles. nowadays even for the smallest reasons once taken a prescription for a doctor, t he same medication is taken even without consulting a doctor, even without consulting the doctor multiple doctor can lead to hormonal imbalance leading to Irregular cycles. similarly Irregular cycles in age old or later years maybe 42 onwards might or most probably due to onset of menopause but in therefore range from youngsters to 40 to 42 the most coon reason for Irregular cycles is PCOD or Poly Cystic Ovarian Disease, which is on a huge onset. We are seeing it once in every 3 cases they come for various reasons like hairballs, acne, Irregular cycles , excess flow, scanty flow. But when you investigate most of them are PCOD. Few tips to control this is to refrain pr stop using hormones to post one cycles, next is stay away from junk food, areated water, food containing preservatives. Fresh hot steaming food can be a very good resolution for you to have regular cycles . If you have the slightest doubt please contact your doctor.