Dr. Ahmed Dupixent-associated Weight Gain or Weight Loss has not been studied. However, because the drug is new in the market and more side effects are emerging day by day, it is possible that Dupixent might have some effects on your body’s fats, muscle mass, and resultant weight gain.
Because weight gain or weight loss has not been mentioned in the manufacturer’s list of “Dupixent Side effects“, we collected data from Dupixent users who have mentioned “weight gain”, “weight loss”, or “no change in body weight” while using Dupixent.
A summary of the patient’s data is presented here:
A total of 26 patients reported weight gain, weight loss, or no change in weight when they were on Dupixent injections.
Most patients were on Dupixent for Atopic Dermatitis. Very few were on Dupixent because of nasal polyps and asthma.
Indications of Dupixent | Percentage of patients |
| Atopic Dermatitis | 83% |
| Asthma | 7% |
| Nasal Polyps | 10% |
All patients reported improvement in the symptoms related to their primary disease except for two patients (7.7%).
Eye redness, swelling, and eye-related side effects were among the most common side effects reported by the patients.
The time that the patients were on Dupixent ranged from as low as 2 weeks to 36 months. 13 patients mentioned the duration of Dupixent use. The mean duration of Dupixent use was 11.5 months and the median time was 8 months.
Dupixent Weight Gain or Weight Loss:
Among the 26 patients who reported weight-related side effects, 14 (53.85%) patients observed weight gain, 10 (38.46%) stated that they neither gained nor lost weight, and 2 (7.69%) reported weight loss.
Dupixent Weight Gain or Loss | Percentage of patients |
| Weight Gain | 53.85% |
| Neutral | 38.46% |
| Weight Loss | 7.69% |
Among patients who reported weight gain as a side effect of Dupixent, the minimum weight gained was 6.6 lbs while the maximum weight gain was 20 pounds. The average weight gain was 13.3 pounds.
Duration of treatment | Weight gain in pounds |
| 2 months | 10 |
| 5 months | 6.6 |
| 6 months | 10 |
| 6 months | 10 |
| 12 months | 20 |
| Not mentioned | 17 |
| Not mentioned | 20 |
4 patients noticed that they had localized weight gain at the site of the injection, primarily in the stomach and the thighs.
2 patients who had no response to treatment and gained weight had to discontinue the treatment.
Patients who received Dupixent for asthma and nasal polyps lost weight compared to those who were treated for atopic dermatitis.
50% of the asthma patients lost weight, while 66% of the patients who were treated for nasal polyps lost weight.
Patients in asthma and nasal polyps treated groups related their weight loss to improvement in breathing and tolerating exercise and brisk walking.
Dupixent weight gain: A case series of 12 patients:
Another case series of 12 patients who were on Dupixent injections reported significant weight gain compared to those who were on methotrexate [Ref].
The average weight gain was 6.1 kgs (13.45 pounds), ranging from a minimum of 0.1 kgs to 18 kgs (0.2 lbs to 39.68 lbs).
The average weight gain reported by patients in our case series was 13.37 pounds, ranging from a minimum of 6.6 pounds to a maximum of 20 pounds.
Why do patients gain weight or lose weight with Dupixent?
The cause of weight gain with Dupixent injection is not yet clear, but this has something to do with the shift in cytokines. IL-17 overexpression or underexpression has been linked with obesity and adiposity in clinical trials [Ref].
However, weight gain can also be simply a result of the reduced basal metabolic rate and reduced caloric requirement. As a patient’s skin starts healing, the body requires less energy to fight infections and eczema.
In simple words, your body is no longer fighting your skin!
Another plausible mechanism, as stated by patients who were treated for nasal polyps, is that the food starts to taste much better than before.
Patients with nasal polyps lose their sense of smell or have a foul and irritating smell in their throat all the time. Once the polyps get treated, their sense of smell returns to normal. Food tastes better, and people start eating more. The result is weight gain.
On the other hand, people with nasal polyps and asthma start breathing better. Hence, their exercise capacity improves, and this could lead to the loss of extra fat. Thus, it’s the balance between eating more vs exercising more.
In our patient series, a greater percentage of patients who were treated for nasal polyps and asthma had weight loss rather than weight gain.
In conclusion:
Dupixent weight gain or weight loss needs to be studied in more detail. It is too early to blame Dupixent for the gain in weight, but since post-marketing reports of weight-related side effects are being increasingly reported, this side effect needs to be monitored.
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