Unexplained weight gain can be frustrating and concerning. There are many potential causes, ranging from lifestyle factors like diet and exercise to underlying medical conditions. Getting to the root cause typically requires a thoughtful evaluation of your habits as well as discussion with a healthcare provider. Some of the more common reasons for unexpected increases on the scale include:
- Diet - An increase in calorie intake, larger portions, more fatty/sugary foods, and excess alcohol intake can easily lead to weight gain. Carefully tracking what you eat and drink for a week or two can shed light on if your diet needs adjustment.
- Decreased activity - Scaling back on exercise or moving less in general can slow metabolism and promote weight gain. Take an honest look at your current activity levels compared to a few months ago - was there a drop-off? Slowly ramping activity back up may help.
- Stress - High or chronic stress levels raise cortisol production, which can increase appetite and drive fat storage. Managing stress through relaxation techniques, adequate sleep, etc. should be prioritized.
- Medications - Some prescription drugs like corticosteroids or antidepressants are infamous for weight gain side effects. Consulting a doctor to switch medications or address dosage may help.
- Underlying conditions - Thyroid disorders, PCOS, Cushing's disease, and depression can all contribute to stubborn weight gain in some cases. If lifestyle factors have been addressed and you're still struggling, get checked out.