Start with what the vagina already does

The Office on Women's Health describes a healthy vagina as a balance of bacteria that keeps the environment acidic and protects against infection. Mucus washes away blood, semen, and discharge. That self-cleaning is the reason most "feminine hygiene" products are solving a problem the body is not having. A mild odor that changes through the day is normal. Exercise can make the scent muskier, and the same office says that can still be normal.

The tips below are the ones those agencies, the CDC, and the U.S. Preventive Services Task Force actually tie to infection risk, screening, or safer sex. Several popular tips, probiotic supplements as treatment, sugary-food bans, a specific underwear fabric, are not here, because the sources do not support them as stated. Where the evidence is only an association, the page says so.

1. Do not douche

Douching means rinsing the inside of the vagina with water or a mix, often vinegar, baking soda, or iodine from a store bottle. The Office on Women's Health says almost one in five U.S. women ages 15 to 44 douche, that doctors recommend you do not, and that studies have not found a health benefit. Douching changes vaginal flora and acidity. It can lead to overgrowth of harmful bacteria, including yeast infections and bacterial vaginosis. If an infection is already there, douching can push bacteria into the uterus, tubes, and ovaries and contribute to pelvic inflammatory disease.

The same page, citing Allsworth and Peipert (Obstetrics & Gynecology, 2007), says women who douche about once a week are five times more likely to develop BV than women who do not. Other problems linked to douching include pelvic inflammatory disease, preterm birth, ectopic pregnancy, and STIs including HIV. Researchers are still sorting out how much douching causes those problems and how much people at higher risk are more likely to douche. Either reading is a reason to stop, not a reason to keep a bottle under the sink.

Douching does not prevent pregnancy and does not prevent STIs. It removes some of the bacteria that protect you. Do not douche before or after sex, and do not douche if a condom breaks. Emergency contraception and, when relevant, HIV post-exposure medicine are the time-sensitive steps, through a clinician or an emergency department. If you were sexually assaulted, the Office on Women's Health says not to douche, bathe, or shower before an exam, because you can wash away evidence. The National Sexual Assault Hotline is 800-656-HOPE (4673).

2. Wash the outside, and stop there

Rinsing the vulva, the outside, with warm water does not harm the vagina. Douching does. Some people use a mild soap on the outside. If your skin is sensitive or you already have an infection, even mild soap can dry and irritate. You do not need to clean inside to be clean.

3. Leave scented products off the vulva

The Office on Women's Health says to avoid scented tampons, pads, powders, and sprays. Those products may raise the chance of a vaginal infection. "Fragrance-free" on a wipe is not a medical endorsement. If a product stings, stop using it.

4. Use condoms when infection is part of the risk

The CDC's contraception guidance says most birth control methods do not protect against STIs or HIV. External latex condoms do help prevent HIV and other STIs when used the right way every time. Lambskin condoms may reduce pregnancy risk and may not stop infections, including HIV. Internal condoms might help prevent STIs. Pre-exposure prophylaxis is a separate, highly effective tool for HIV when a clinician prescribes it. BV risk specifically goes up with new or multiple partners, with skipping condoms, and with douching. Steps the CDC lists that may lower BV risk are fewer partners, not douching, and correct condom use. Not having sex lowers risk further. None of these is a moral instruction. They are exposure math.

5. Treat odor as a symptom, not a smell to cover

Do not douche, spray, or powder your way out of a bad odor. The Office on Women's Health says douching hides odor briefly and makes other problems worse, and it can make an exam harder. Call a doctor or nurse for discharge that smells bad, itching with thick white or yellow-green discharge, burning, redness, swelling, pain when urinating, or pain with sex. Those can be an infection or an STI. A fish-like smell after sex is a classic BV clue and is covered in Bacterial Vaginosis. Itch with thick discharge is more often yeast, and the two are compared in Yeast Infection vs. BV.

6. Keep cervical screening on a real schedule

Vaginal health includes the cervix. The U.S. Preventive Services Task Force (2018 recommendation, published in JAMA) recommends cervical cancer screening every 3 years with cytology alone for women ages 21 to 29. For ages 30 to 65, it recommends one of three strategies: cytology alone every 3 years, high-risk HPV testing alone every 5 years, or HPV testing plus cytology every 5 years. It recommends against screening before 21, against screening after 65 when prior screening was adequate and risk is not high, and against screening after a hysterectomy that removed the cervix if there is no history of a high-grade precancer or cervical cancer. People with HIV, DES exposure, or a weakened immune system may need a different plan. The HPV vaccine does not replace screening. Details of abnormal results are in Pap Smears and HPV Tests.

7. Do not run a second course of antifungal cream on a guess

CDC candidiasis guidance says over-the-counter antifungal misuse is common and delays care for other causes. If symptoms persist after one over-the-counter treatment, or return within two months, get tested. About 10% to 20% of women carry yeast with no symptoms, so a positive test without symptoms is not automatically a disease to treat. Pregnancy yeast treatment is topical azole for 7 days, not a single fluconazole tablet.

8. Skip probiotics as a BV or yeast treatment

Supplements marketed for the vaginal microbiome are easy to find. The CDC's 2021 STI guidelines reviewed probiotic studies for BV and concluded that, overall, they do not support probiotics as an add-on or a replacement for antibiotics. The candidiasis chapter says there is no substantial evidence for probiotics or homeopathic products as yeast treatment. Eating yogurt is fine if you like yogurt. It is not a prescription.

9. If you are pregnant and something smells or itches, get seen

Symptomatic BV in pregnancy raises the chance of preterm birth and of a baby weighing under 5.5 pounds, which is why the CDC says treatment matters. Routine screening of pregnant people who have no symptoms is not recommended for preventing preterm birth. The point of this tip is the symptom, not a hunt for silent BV. Tell the prenatal clinician. Do not start leftover antibiotics.

10. Know which habits are not the cause

You cannot get BV from a toilet seat, bedding, or a swimming pool. The CDC says so plainly. Hormonal contraception does not increase BV risk and might protect against it, according to the STI guidelines. A copper IUD has been associated with higher BV prevalence in some reports. That is a reason to mention the device if symptoms start after insertion, not a reason to avoid an IUD that otherwise fits. Poorly controlled diabetes is a host factor for complicated yeast infections and for a weaker response to short treatment. That is a glucose problem to manage with a clinician. It is not evidence that a single dessert causes candidiasis.

What these tips will not fix

They will not diagnose bleeding between periods, pain with deep sex, a bulge at the vaginal opening, or cycles that have stopped. They will not replace a pelvic exam when discharge changes. They will not make a normal, mild, day-to-day odor disappear, and chasing that odor with products is how people end up with the infections the products were supposed to prevent.

If you changed one habit this month, the one with the clearest paper trail is throwing out the douche.

Sources

Educational only. New pain, fever, pregnancy symptoms, or bleeding need a clinician, not another hygiene change.