How much weight do people gain on Nexplanon?

There is no reliable single number. Reported changes are often modest and hard to separate from the natural weight fluctuations that occur over the several years the implant is in place.

Will I lose weight after Nexplanon removal?

Evidence does not clearly establish that removal causes weight loss, because the implant is not a proven strong cause of weight gain. Don't have it removed over weight without discussing it with your provider.

Is the implant worse for weight than the IUD?

The implant delivers hormone systemically while the hormonal IUD acts mostly locally. Weight gain is reported more often with the implant in perception, but neither has strong study evidence of major weight gain; the shot is the method most linked to it.

Should I avoid Nexplanon because of weight gain?

The implant is one of the most effective contraceptives, and weight gain is not firmly established as a strong effect. If weight is a concern, weigh it against effectiveness with your provider rather than ruling the method out.

Does Nexplanon Cause Weight Gain?

By Mustafa Bilgic · Updated June 2026 · Reviewed against guidance from ACOG, the Mayo Clinic, MedlinePlus (NIH), and the product information.

Educational information, not medical advice. This page summarizes what research and product information report. It is not a substitute for advice from your doctor and not a recommendation for or against the Nexplanon implant. Decisions about contraception should be made with your healthcare provider. Operator: Mustafa Bilgic.

Nexplanon is a small, flexible rod placed under the skin of the upper arm that releases the progestin etonogestrel for up to several years. It's one of the most effective forms of contraception available. A common concern is weight gain. The balanced answer: weight gain is listed among reported side effects and some users do report it, but high-quality evidence that the implant causes major weight gain is limited, and studies often can't separate the device from normal weight change over years of use.

The short answer

Weight gain is listed in the Nexplanon product information as a side effect that some users report, and it is among the more commonly cited reasons people give for having the implant removed. However, well-controlled studies have not clearly shown that the implant itself causes significant weight gain — much of the reported change overlaps with the natural weight fluctuations that happen over the multi-year span the device is in place. Many users see no meaningful change.

Key point: "Reported as a side effect" and "proven to cause" are not the same thing. Some people genuinely notice weight gain on Nexplanon; population studies just don't establish it as a strong, across-the-board cause.

How Nexplanon works

The implant steadily releases etonogestrel, a progestin, into the bloodstream, mainly preventing ovulation and thickening cervical mucus. Unlike the local action of a hormonal IUD, the implant does deliver hormone systemically, which is one reason progestin-related side effects (including changes in bleeding patterns, mood, and possibly weight for some) are part of its profile.

What the evidence shows

Reviews of the contraceptive implant report that weight gain is a frequently cited concern and reason for discontinuation, but evidence that the device causes substantial weight gain is limited and mixed. Studies that follow users over time often find changes that are modest and hard to attribute to the implant alone, given that weight tends to change over several years regardless of contraception. ACOG groups the implant with IUDs as long-acting reversible contraception and does not flag it as a strong cause of significant weight gain, though it acknowledges side effects vary by person.

Why some users report weight gain

Years-long use. The implant lasts several years, over which weight naturally rises or falls for many unrelated reasons.
Progestin sensitivity. Because the implant delivers hormone systemically, some individuals may notice appetite or fluid changes.
Expectation effects. Anticipating weight gain can shape how people attribute any change they see.

Implant vs IUD vs shot

Among hormonal methods, the birth control shot (Depo-Provera) has the strongest evidence linking it to weight gain. The hormonal IUD shows little weight effect for most users. The implant (Nexplanon) sits in between in perception — commonly reported by users, but without strong study evidence of major gain. Compare in our birth control and weight gain overview and the page on the Mirena IUD.

What to do if you're concerned

Track the trend over weeks under consistent conditions, not day to day.
Consider other factors — diet, activity, stress, sleep, and life stage all move the scale.
Talk to your provider if you notice meaningful change; they can help identify the cause and review options.

For intentional healthy weight goals, our calorie calculator can help you understand your daily needs.

Mustafa Bilgic

Operator of WeightGain.us, based in Adıyaman, Türkiye. Mustafa is an independent publisher, not a medical professional; every clinical statement here is attributed to the cited authorities (ACOG, Mayo Clinic, MedlinePlus/NIH, product information). For personal advice about Nexplanon, consult your own doctor.

Don't have the implant removed over weight concerns without talking to your provider — removal affects your pregnancy risk and should be planned. Your provider can assess whether the implant is the likely cause and discuss alternatives.

When to see your doctor

Contact your provider for significant or rapid weight change, bothersome side effects, or any warning signs in the Nexplanon product information. Problems at the insertion site, severe headaches, or other concerning symptoms warrant prompt attention.

Frequently asked questions

Does Nexplanon cause weight gain?: Weight gain is listed as a reported side effect and a common reason users give for removal, but well-controlled studies have not clearly shown the implant causes significant weight gain. Many users notice no meaningful change.
How much weight do people gain on Nexplanon?: There is no reliable single number. Reported changes are often modest and hard to separate from the natural weight fluctuations that occur over the several years the implant is in place.
Will I lose weight after Nexplanon removal?: Evidence does not clearly establish that removal causes weight loss, because the implant is not a proven strong cause of weight gain. Don't have it removed over weight without discussing it with your provider.
Is the implant worse for weight than the IUD?: The implant delivers hormone systemically while the hormonal IUD acts mostly locally. Weight gain is reported more often with the implant in perception, but neither has strong study evidence of major weight gain; the shot is the method most linked to it.
Should I avoid Nexplanon because of weight gain?: The implant is one of the most effective contraceptives, and weight gain is not firmly established as a strong effect. If weight is a concern, weigh it against effectiveness with your provider rather than ruling the method out.

Related guides

References

Sources: ACOG — LARC: IUD and Implant · Mayo Clinic — Contraceptive implant · MedlinePlus (NIH) — Etonogestrel Implant · Drugs.com — Nexplanon · Planned Parenthood — Implant.