Can taking prescription medicines lead to fast, unexplained weight loss? Let’s take an in-depth look at the facts around medication.
Many people who want to lose weight quickly may resort to using medication as a shortcut.
However, this can be a risky and unhealthy choice, as some medicines side effects can include rapid weight loss that is not sustainable or safe.
In this blog post, we will explore some of the common types of medication that can cause rapid weight loss, the potential health risks and complications, and the alternatives to achieve a healthy and balanced weight.
Why Weight Changes Occur
First, it’s important to understand that medicines can lead to weight fluctuations in a few key ways:
- Appetite changes: Some drugs reduce hunger cues causing you to eat less without realizing it. Others increase appetite.
- Fluid loss: Diuretics and other medicines may lead to dehydration or fluid loss.
- Fatigue: Feeling tired or weak can result in less physical activity and a drop on the scale.
- Nausea: Not being able to keep food down leads to fewer calories consumed.
So in many cases, the weight changes are actually tied to changes in diet, exercise, hydration, or metabolism that certain medications trigger.
Common Culprits
Now let’s look at some types of medicines that have weight loss as a potential side effect:
- Diabetes medications like metformin may reduce appetite and calorie absorption. In a study, metformin led to around a 5-10 pound weight loss over 6-12 months.
- Stimulants like those prescribed for ADHD such as Adderall, Ritalin, Vyvanse – can reduce appetite substantially, resulting in drops of 10 pounds or more.
- Anti-seizure drugs like topiramate have been shown to lead to median losses of 8-10 pounds over periods as short as 3 months.
- Cancer drugs – medications for chemotherapy often cause rapid but temporary weight loss due to nausea and loss of appetite.
So clearly, various prescription medications can directly or indirectly cause short-term weight loss averaging 5-10 pounds but sometimes more significant.
Is This Dangerous?
The next logical question is – should this rapid weight loss worry you? The answer depends on your situation:
- Moderate weight loss is often considered a positive side effect, especially if you were overweight to begin with. But speak to your doctor.
- However, unexpected, rapid weight loss of 20+ pounds can be dangerous and needs immediate medical attention. Tell your doctor ASAP.
- If the weight loss persists long-term, becomes extreme, or impacts appetite/health, it may require changing medication dosage/type.
So in summary, aim for a healthy rate of weight loss unless directed by a doctor. And notify them about any extreme or prolonged changes.