In an era of endless health “tips” on TikTok, YouTube, and WhatsApp, misinformation spreads faster than most viruses. But doctors and nurses are speaking out — and they’re not holding back.
A new viral BuzzFeed discussion has sparked attention after dozens of medical professionals revealed the most dangerous and outdated health myths people still believe in 2025. From antibiotics to anesthesia rules, here are the common “health lies” that could be putting you at risk — and what medical experts want you to know.
“If You Think You’re Having a Heart Attack, Don’t Drive Yourself”
It sounds obvious, but many people still make this mistake. According to emergency care professionals, driving yourself to the hospital during a heart attack could be deadly — not just for you, but for others on the road.
“If you pass out, you can kill someone else on the road,” one emergency responder warned. “Call an ambulance. Paramedics can start treatment immediately, and they can get you to the hospital faster and safer than anyone else.”
While many people worry about ambulance costs, most hospitals have financial assistance programs that can reduce or cover those bills.
“NPO Means Absolutely Nothing by Mouth”
If you’ve ever been told not to eat or drink before a medical procedure, listen carefully — it also means no ice chips, mints, gum, or cough drops.
Anesthesiologists warn that even small amounts can cause your body to produce saliva and digestive fluids, increasing the risk of aspiration during surgery.
“Even a tiny piece of gum can delay your procedure by hours,” one nurse explained. “When we say ‘nothing by mouth,’ we mean it.”
“Antidepressants Aren’t a Cure — Therapy Still Matters”
Mental health professionals are pushing back against the belief that antidepressants alone can cure mental illness.
“Medication helps stabilize symptoms, but it doesn’t teach coping skills,” said one therapist. “It’s like breaking a leg — the cast helps it heal, but you still need physiotherapy afterward.”
Most experts agree that the best treatment for depression and anxiety involves a combination of therapy and medication. Recovery, they emphasize, is a gradual process — and it looks different for everyone.
“Root Canals Do Not Cause Cancer”
The rumor that root canals lead to breast cancer or other diseases has been floating around online for years, but dentists say it’s completely false.
“Research has repeatedly disproven this claim,” said one dental specialist. “A root canal removes the infected tissue but leaves the inorganic structure of your tooth intact. It’s one of the safest and most effective dental procedures available.”
However, failing to get a final restoration — such as a filling or crown — after a root canal can lead to bacterial reinfection.
“Your Pharmacist Isn’t Hiding Your Medication”
Pharmacists are often blamed when patients can’t get their prescriptions, but professionals say the real issues are usually miscommunication, insurance delays, or doctor errors.
“We don’t want to withhold your medication,” one pharmacist explained. “Sometimes prescriptions are sent to the wrong place, written incorrectly, or have dangerous interactions with other meds you’re taking.”
So before getting angry at your pharmacist, check with your doctor or insurance provider — chances are, the holdup isn’t at the pharmacy counter.
“Getting Your Hair Wet Won’t Make You Sick”
Contrary to what many mothers (and grandmothers) have said for decades, you can’t catch a cold from being outside with wet hair.
Doctors say it loud and clear: only viruses and bacteria cause illness, not cold weather or rain. Staying dry and warm might make you more comfortable, but it won’t prevent you from getting sick.
“Your Partner Can’t Make Medical Decisions Unless It’s Legal”
Love might last forever, but it doesn’t hold up in a hospital without legal documentation.
Medical professionals warn that unmarried partners have no legal authority to make medical decisions unless a power of attorney document is in place.
“You can be with someone for 20 years, but if you’re not legally married or don’t have paperwork, you have no say,” one Virginia nurse explained. “If you want your partner involved, put it in writing.”
“Stop Cleaning Wounds with Hydrogen Peroxide”
Hydrogen peroxide might look effective when it bubbles on a wound, but doctors say it kills healthy cells and delays healing.
“The best thing you can use is simple soap and water,” explained one trauma nurse. “Hydrogen peroxide damages good tissue — it’s an outdated practice.”
“Don’t Tell Kids Shots Won’t Hurt”
Parents often reassure children that vaccines or injections won’t hurt, but healthcare workers say honesty is best.
“It will hurt — just for a moment,” one pediatric nurse said. “Telling them it won’t only breaks trust. Be honest, calm, and supportive.”
“Don’t Wait to Address Developmental Delays”
Many parents take a “wait and see” approach when their child is a late talker or walker, but early intervention is key.
Physical, occupational, and speech therapists emphasize that early therapy leads to much better outcomes.
“If you suspect a developmental delay, don’t wait,” one child specialist advised. “Get an evaluation. Waiting can make the problem harder to fix later.”
“Fluoride Works — It’s Not Mind Control”
Fluoride in drinking water remains one of the most debated health topics, but decades of research show it’s safe and effective.
“At recommended levels, it prevents tooth decay and doesn’t lower IQ,” said one Ohio dentist. “If fluoride could control minds, I’d be rich by now.”
“Don’t Go to the ER for a Common Cold”
Emergency room doctors are pleading with patients to stop visiting the ER for common colds.
“There’s no cure for a cold — it’s a virus,” one physician explained. “Every time you go out while sick, you’re spreading it.”
Instead, doctors suggest calling your healthcare provider or pharmacist for advice on over-the-counter relief. Rest, fluids, and time remain the best remedies.
“Hiccups Are Normal in Babies”
Labor and delivery nurses say new parents often panic when newborns get hiccups — but they’re completely harmless.
“You get hiccups as an adult and survive, and so will your baby,” said a veteran maternity nurse. “They’re just part of normal development.”
“Surgery Taking Longer Doesn’t Mean Something Went Wrong”
If your loved one’s surgery is running over schedule, don’t panic.
“Longer doesn’t always mean worse,” said an orthopedic surgeon. “Sometimes procedures take more time because the team encountered an unexpected issue that needs extra attention. In most cases, it leads to better outcomes.”
“You Don’t Get the Flu from the Flu Shot”
Despite widespread misinformation, you cannot get the flu from the flu vaccine.
The vaccine uses an inactivated virus that cannot cause infection. However, some people experience mild side effects like soreness or fatigue — a small price for protection during flu season.
“Radiation Therapy Doesn’t Make You Radioactive”
Cancer patients undergoing radiation therapy are often afraid to be near others afterward, but experts say that’s unnecessary.
“You won’t become radioactive unless radioactive material is actually inserted into your body,” explained a radiation specialist. “If that’s the case, your doctor will clearly warn you.”
Otherwise, it’s perfectly safe to hug loved ones and continue daily life.
“Show Up on Time for CT Scans”
Radiology departments are overwhelmed, and delays can throw off entire schedules.
“We handle hundreds of thousands of patients and only have a few scanners,” one radiologist explained. “If you arrive 15 minutes late, you’re considered a walk-in — and yes, you’ll have to wait.”
Arriving early ensures your scan happens on time and helps the system run smoothly.
“Labor and Delivery Is Not a Hotel”
Finally, one labor nurse had a message for expectant parents: childbirth doesn’t run on appointments.
“If you’re scheduled for an induction, it doesn’t mean a room is reserved,” she said. “We have to take unscheduled patients in active labor first. Please be patient — we’re doing our best.”
Why These Myths Keep Spreading
Medical misinformation thrives online because it often mixes partial truths with fear or emotion. A post claiming “flu shots cause illness” or “wet hair makes you sick” is catchy — and easy to share.
Experts encourage readers to verify claims through reputable health sources, such as the World Health Organization (WHO), the Centers for Disease Control and Prevention (CDC), or trusted hospitals.
FAQs
1. What are the most common health myths people still believe?
Some of the biggest include “the flu shot gives you the flu,” “cold weather makes you sick,” and “hydrogen peroxide helps wounds heal.” All have been debunked by medical research.
2. Are antidepressants enough to treat depression?
No. Experts recommend combining therapy and medication for best results. Medication can stabilize symptoms, while therapy helps address underlying issues.
3. Why is early intervention important for child development?
Early therapy helps correct developmental delays before they become harder to treat. The earlier a child gets help, the better their long-term outcome.
4. Can you drive yourself during a heart attack?
No. It’s extremely dangerous. Always call an ambulance, as paramedics can begin treatment immediately and get you to the hospital safely.
5. Do root canals cause cancer?
No. Scientific research has proven there’s no link between root canals and cancer. The procedure simply removes infected tissue and preserves the tooth structure.
What’s the biggest health myth you used to believe?
Share your thoughts in the comments.

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