For most people, yes. An IUD is one of the most effective, low-maintenance, and cost-effective forms of birth control available. It works for years without daily effort, has a failure rate well under 1%, and can be removed any time you change your mind. But “worth it” depends on your body, your priorities, and how you feel about the tradeoffs, especially the insertion process and potential side effects in the first few months.
How Effective IUDs Actually Are
IUDs are in a different league from daily birth control methods. With the pill, real-world effectiveness drops significantly because people miss doses, take them late, or refill prescriptions inconsistently. Typical use failure rates for the pill hover around 7 to 9% per year. IUDs, by contrast, sit below 1% because once the device is placed, there’s nothing to remember or mess up. You don’t have to do anything for it to keep working.
Both hormonal and copper IUDs share this advantage. The difference between them isn’t about effectiveness. It’s about how they work in your body and how long they last.
Hormonal vs. Copper: Two Different Experiences
Hormonal IUDs release a small amount of progestin directly into the uterus. This thins the uterine lining and thickens cervical mucus, which is what prevents pregnancy. Because the hormone acts locally rather than circulating through your whole body, systemic side effects tend to be milder than what you’d get from the pill. Over time, most people with a hormonal IUD have lighter periods, and some stop bleeding altogether.
The copper IUD contains no hormones at all. Copper creates an environment in the uterus that’s toxic to sperm. It’s the go-to option if you can’t take hormones due to a medical condition, or if you simply prefer not to. The tradeoff: your periods will likely get heavier and crampier, especially in the first three to six months. That usually improves, but for people who already have heavy or painful periods, a copper IUD can make things worse rather than better.
How Long Each IUD Lasts
This is where IUDs really pull ahead on value. The FDA-approved durations for the IUDs currently available in the U.S. are:
- Mirena: 8 years (updated from the original 5-year approval)
- Liletta: 8 years (also updated from 5)
- Kyleena: 3 years
- Skyla: 5 years
- Paragard (copper): 10 years (with study data supporting use up to 12 years)
You can have any IUD removed before its expiration if you want to get pregnant or switch methods. Fertility returns quickly after removal.
The Cost Advantage Over Time
IUDs have a higher upfront cost than a pack of pills, but they pay for themselves quickly. Health economic analyses consistently find that all long-acting methods, including both types of IUDs, are less costly and more effective than oral contraceptives over time. The longer you keep the device, the greater the savings. If you’re paying out of pocket, one IUD covering 8 to 10 years costs far less than monthly pill copays, pharmacy trips, and the occasional emergency contraception purchase when something goes wrong.
Under the Affordable Care Act, most insurance plans cover IUDs with no out-of-pocket cost, which makes the math even simpler.
Benefits Beyond Preventing Pregnancy
If you deal with heavy periods, a hormonal IUD can be genuinely life-changing. In clinical trials of the 52-mg hormonal IUD, participants saw a median blood loss reduction of about 98% by cycle six. Nearly one in five had no bleeding or spotting at all by that point, and another 29% had only light spotting. These devices are actually FDA-approved to treat heavy menstrual bleeding, not just prevent pregnancy.
Hormonal IUDs can also help manage pain from endometriosis and reduce the risk of endometrial cancer. The copper IUD has its own unique benefit: it’s the most effective form of emergency contraception when placed within five days of unprotected sex, and then it keeps working for a decade.
What Insertion Actually Feels Like
This is the part that makes people hesitate, and honestly, insertion can hurt. The device passes through the cervix, which causes a sharp cramping sensation that ranges from mild to intense depending on the person. It typically lasts under a minute, but that minute can be rough.
Pain management has improved in recent years. The CDC’s 2024 guidelines recommend that providers discuss pain relief options before placement and create a plan based on your preferences. Lidocaine, either as a numbing injection near the cervix (paracervical block) or as a topical gel, has evidence supporting its use for reducing pain during the procedure. If pain management matters to you, ask your provider specifically what they offer before your appointment. You’re well within your rights to request numbing.
Cramping and spotting are normal for a few days afterward. Most people return to regular activities the same day or the next.
Risks and Complications
Serious complications from IUDs are uncommon but not zero. The two main ones are expulsion (the device slipping out of place) and perforation (the device pushing into the uterine wall).
Expulsion happens to about 2.3% of users within the first year and roughly 5% over five years. You’d typically notice it because you’d feel the device or see a change in your strings. If it comes out, you’re no longer protected. Perforation is much rarer, occurring in about 0.2% of placements within the first year. It sometimes requires a minor procedure to retrieve the device, but serious injury is extremely uncommon.
Infection risk is slightly elevated in the first 20 days after insertion but returns to baseline after that. IUDs do not increase your long-term risk of pelvic inflammatory disease.
Weight Gain: What the Evidence Shows
Weight gain is one of the most common concerns people have about hormonal birth control, and the evidence here is reassuring for IUDs. In a large randomized trial comparing hormonal and non-hormonal methods over 18 months, copper IUD users (the non-hormonal control group) gained about 1.5 kg. Hormonal implant users gained 2.4 kg, and injection users gained 3.5 kg. The copper IUD data suggests that some weight gain happens regardless of hormones, and that IUDs are on the lower end of the spectrum compared to other hormonal methods. Separate studies on copper IUDs specifically have found no direct link to weight gain.
Who Shouldn’t Get an IUD
IUDs are safe for the vast majority of people, including teenagers and those who haven’t had children. But certain conditions rule them out. You can’t get either type of IUD if you have a current pelvic infection, an active untreated STI, unexplained vaginal bleeding that hasn’t been evaluated, or certain uterine abnormalities that distort the shape of the cavity. Current breast cancer rules out the hormonal IUD specifically. Your provider will screen for these before placement.
If you have a condition that makes hormones off-limits, the copper IUD is often still an option, which is one of its biggest advantages. It’s one of the few highly effective, long-term, completely hormone-free methods available.
The Practical Reality of Living With One
Once the adjustment period passes (usually one to three months for hormonal, three to six months for copper), most IUD users report high satisfaction. You don’t carry anything, refill anything, or schedule anything until years later when it’s time for removal or replacement. It doesn’t interfere with sex. Partners occasionally feel the strings, but providers can trim them if that’s an issue.
The biggest day-to-day difference people notice with a hormonal IUD is lighter or absent periods. With a copper IUD, it’s the opposite: heavier flow and stronger cramps, at least initially. Neither type protects against sexually transmitted infections, so condoms are still relevant if that’s a concern for you.
For most people weighing the decision, the calculus is straightforward: a few minutes of discomfort during insertion, a few months of adjustment, and then years of highly effective, hands-off contraception that costs less over time than almost any alternative.