K+

Your muscles just wouldn’t be the same without this mineral. Most folks know there’s potassium in bananas, but that’s not the only place you can find this powerful electrolyte - Dana Angelo White MS RD

K-Cups

We believe that it is our responsibility to protect the environment. We're doing our small part, one coffee cup at a time - Kill the K-Cup

Kaiser Permanente

I always have to dream up there against the stars. If I don’t dream I will make it, I won’t even get close - Henry J. Kaiser

Kale

Any restaurant worth its pink Himalayan salt is selling it. When we speak of trendy foods, kale is it - Jen Doll

Kambo

Kamut

Although it’s probably new to a lot of Western palettes, the millennia-old crop has been cultivated for centuries. Also known as ‘khorasan wheat’, it’s been dubbed the ‘Pharaoh grain’, owing to the fact that the seeds were rumoured to be discovered in ancient Egyptian tombs - Liz Connor

Kaposi Sarcoma (Human Herpesvirus 8)

Kaposi sarcoma (KS) was one of the first conditions recognized as an opportunistic sequela of HIV infection, and remains the most common AIDS-associated neoplasm - HIVInSite

Kartagener's Syndrome

Kartagener’s Syndrome is a rare and frustating disease with paralyzed cilia, bronchiectasis, reversed organs and interstitial lung disease - Lynne Talbot-Taylor

Karyotype

A karyotype is the complete set of chromosomes or an organism, though the term can also be used to refer to a lab-produced image of an organism’s chromosomes that have been isolated from a cell and put in numerical order - Jeff Schmerker

Kava

Although it might seem brash to down a cup of body and mood-altering tea, there is some scientific research on kava tea as a legitimate means to help some people - Kelly Dickerson

Kawasaki Disease

There is no diagnostic test for Kawasaki's, it is therefore determined by a series of symptoms - Kawasaki-Disease.co.uk

Kayaking

Go light, go solo, go now - Motto of Audrey Sutherland, author of Paddle My Own Canoe, grandmother and solo kayaking veteran of 10,000 miles

Kayexalate ((Sodium Polystyerene Sulfonate)

There are no good studies and no good animal data that show efficacy of SPS or SPS/sorbitol in treatment of hyperkalemia in the acute setting - Sara Nelson MD

Keepsake Ultrasounds

The people performing keepsake ultrasounds are typically focused on getting a good photo, not on a comprehensive assessment of your health and that of your baby - Lauren Theilen MD

Kefir

A tangy, sour, fermented milk drink may not sound like a likely candidate to move from health food stores to mainstream supermarkets, but that's exactly what kefir has done - Elena Conis

Kegels

But kegel exercises aren’t for everyone, and doing hundreds a day won’t magically fix your pelvic health - Sara Reardon DPT

Kegels and Men

Fortunately, recent research and new clinical attention are improving awareness and putting men’s pelvic health in the spotlight - Daryl Austin

Kelp

Eat Kelp. It's chock-full of nutrients, it mitigates climate change by sequestering carbon, improves oceans by soaking up excess nitrogen and phosphorus, and has potential as a valuable fertilizer and biofuel. It's also delicious - Patrick Mustain

Kennel Cough (Atypical Canine Infectious Respiratory Disease Complex)

So, while we’re not sure what’s going on with all the coughing dogs in the US right now, we can be reasonably confident we know how to treat them. Our usual approaches will still work - Scott Weese

Kennel Cough (Canine Infectious Respiratory Disease Complex)

Two words that tend to generate confusion among pet parents: kennel cough - Fetch

Keratin

Simply put... Keratin protein is a type of protein that makes up your hair, skin and nails, and is even found in your internal organs - Nexxus

Keratitis

Infectious keratitis is a potentially blinding ocular condition of cornea which can cause severe visual loss if not treated at early stage. If the appropriate antimicrobial treatment is delayed, only 50% of the eyes gain good visual recovery - Raymond L. M. Wong

Keratoconus

Many people suffer with vision problems for years without knowing their blurred vision, glare or halos are due to a condition called keratoconus - DukeHealth

Kernicterus

With proper testing, screening and treatment kernicterus is a preventable malady - pic-K

Ketamine

Although initially developed as an anesthetic, over the past several decades ketamine has been revealed to have greater potential in the field of medicine. A growing body of literature has demonstrated the clinical value of ketamine across diverse settings, with emerging roles in pain medicine and treatment-resistant depression - Linda Li

Ketamine Procedural Sedation

Ketamine’s use as an anesthetic — and not as a party drug — is widespread, though not commonly known. In fact, the World Health Organization estimates ketamine is the most widely used anesthetic in the world and keeps it on their list of essential medicines, a category of drugs that all developed countries should have on hand - Troy Farah

Ketamine Therapy

It is either the most exciting new treatment for depression in years or it is a hallucinogenic club drug that is wrongly being dispensed to desperate patients in a growing number of clinics around the country - Andrew Pollack

Ketchup

Ketchup or Catsup: It can be healthy for you - Tom Herrin

Keto Supplements

Only short-duration studies examining small samples have found that exogenous ketones can help achieve ketosis quicker and may decrease appetite. But there haven't been any long-term studies looking at these outcomes over time - Michelle Milgrim, RD

Ketofol

Ketofol became popular as a procedural sedation cocktail, a mix of ketamine and propofol in a single syringe. Its pharmacological appeal was that you could avoid high doses of either agent through synergistic effects - Michelle Lin MD

Ketogenic diet

Keto is hard. If it’s not hard, you’re probably not doing it right - Sara Chodosh

Ketosis

Ketosis isn’t a race. It just happens naturally when you eat a well-formulated ketogenic diet. And ketosis isn’t something to obsessively measure. Unless you’re using a keto diet to treat a specific medical condition, blood, breath, and urine ketone tests are more or less pointless - Luis Villaseñor

Kevin Costner’s Other Waterworld - Cleaning up the BP oil spill

After 40 days and many failed attempts at cleaning up the 210,000 gallons of oil gushing into the Gulf of Mexico every day, British Petroleum has found their knight in shining water, Kevin Costner

Keytruda (Pembrolizumab)

Keytruda works by binding to PD-1 and therefore blocking the cancer cells from using their own protein to slot into the same spot and switch off the immune cells. So with Keytruda, the T-cells do their job and effectively attack the cancer. Keytruda is also known as an anti PD-1 immunotherapy - Nicholas Huntington

Khat

You may have never heard of khat, but estimates have shown that as many as 10 million people worldwide may chew this amphetamine-like drug - Lissette Padilla

Khorasan wheat

Although it’s probably new to a lot of Western palettes, the millennia-old crop has been cultivated for centuries. Also known as ‘khorasan wheat’, it’s been dubbed the ‘Pharaoh grain’, owing to the fact that the seeds were rumoured to be discovered in ancient Egyptian tombs - Liz Connor

Kickboxing

Whether you're a fitness newbie or long-time gym aficionado, undertaking a kickboxing workout at least once per week can help you feel re-energized and out of a rut - Sabah Karimi

Kidney Cancer

If there is a positive light to be shed from a renal cell cancer diagnosis, it's that 62% of all cases are diagnosed in a localized state - Sean Williams

Kidney Dialysis

Increasingly, patients, doctors, and advocates say the way forward lies in focusing on alternative therapies, particularly those, such as home dialysis, that allow for longer and more frequent treatments - Robin Fields

Kidney Donation

A planet-wide black market in human organs has arisen stimulated primarily by the demand for kidneys

Kidney Failure

Persons with advanced kidney disease should be empowered to understand how each new medication, life event, dietary change, or hospitalization can influence their disease progression - Carmen A. Peralta MD

Kidney Fibrosis

Fibrotic disorders are commonplace, take many forms and can be life-threatening. No better example of this exists than the progressive fibrosis that accompanies all chronic renal disease. Renal fibrosis is a direct consequence of the kidney's limited capacity to regenerate after injury. Renal scarring results in a progressive loss of renal function, ultimately leading to end-stage renal failure and a requirement for dialysis or kidney transplantation - Tim D Hewitson

Kidney Stone Diet

If when you take my kidney stone prevention course, the oxalate is the last thing I talk about because it just is not that important. You guys are eating too much sugar, you’re eating too much salt, many of you because of your job cannot drink enough water - Jill Harris

Kidney Stone Supplements

The majority of dietary supplements claiming to treat or prevent kidney stones contain ingredients with conflicting or no scientific evidence to support their claims - Adamasco Cupisti

Kidney Stones (Urolithiasis)

Kidney stone disease is one of the most common problems of the urinary system. Race, gender and ethnicity play a part in who may get kidney stones - UrologyHealth.org

Kidney Transplantation

Compensation is a controversial topic, and raises the specter of shady organ markets exploiting poor people. But there are a lot of things short of outright paying people for their kidneys that we can, and should, try - Dylan Matthews

Kidney Transplantation Big Al's Used Organ Lot

The demand for viable organ transplants is not going away any time soon. We are either going to have to find an ethical and honourable way of solving this enormous problem or the day of "Big Al’s Used Organ Lot" may not be so far away

Kidneys

Superficially, it might be said that the function of the kidneys is to make urine; but in a more considered view one can say that the kidneys make the stuff of philosophy itself - Homer William Smith

Kids Over 5 Covid-19 Vaccination

There is a scientific question - will vaccinating children save lives? - which is complex as the answer may vary from country to country - James Gallagher

Kids under 5 Covid-19 Vaccination

Prioritizing equity is particularly important as vaccination efforts extend to the youngest group of children - Jennifer Kates

Kimchi

Korean kimchi is undoubtedly the healthiest food on the planet. In a tradition dating back thousands of years, vegetables are pickled and and combined in a multitude of ways that suit every taste - Eric Armstrong

Kinesiology

Kinesiology can help you balance your body’s systems, and enjoy a level of health and well-being you may not have experienced since you were a child - Kinesiology IE

Kissing

Kissing may be the most primal way we express affection with other humans. We kiss babies on their adorable chubby faces, friends on the cheeks, and lovers on the lips to demonstrate of our feelings and desire for closeness. Kissing may be one of the earliest evolutionary mechanisms for social bonding - Jordan Rosenfeld

Kissing Bug

While kissing may tug at your heart, the kissing bug can really screw up your heart. That's because triatomines, the more scientific and less cuddly name for the blood-sucking kissing bug, can carry the parasite Trypanosoma cruzi - Bruce Y. Lee

Kiwifruit

Beyond taste, kiwis are little nutrient powerhouses. The two headliners are vitamin C—one medium kiwi delivers 117 percent of your daily needs—and vitamin K (38 percent in a medium kiwi), which helps with bone building and blood clotting, among other things - Kellee Katagi

Klebsiella pneumoniae

Normally, the Klebsiella bacteria live in human intestines and don't harm people with healthy immune systems. But the multidrug-resistant strain named KPC has emerged...Lauran Neergaard

Kleefstra Syndrome

In 2010, the syndrome was named after the Dutch doctor Tjitske Kleefstra, who has dedicated herself to study and research since 1999. KS is caused by mutation or loss of the EHMT1 gene. Patients present characteristic facies, cognitive deficit, hypotonia with severe walking problems, delay or absence of expressive language, heart disease, renal anomalies, epilepsy, autism spectrum and behavioral disorders.- Kleefstra Syndrome Italy

Klinefelter Syndrome (XXY)

It is a leading genetic cause of male infertility. Yet nearly two-thirds of boys and men who have Klinefelter's do not know it, and many live out their lives never suspecting that they have an extra chromosome - Jane E. Brody

Knee Arthroscopy

The world’s most common orthopedic procedure — knee arthroscopy — is frequently a waste of time and money and should almost never be performed on patients with degenerative knee disease - Casey Ross

Knee Dislocation

The first step in management involves immediate reduction of obviously dislocated knee, especially if neurovascular compromise exists, without radiographs - Manuel Celedon MD et al

Knee Hyperextension

The severity can vary. A mild hyperextension is an overstretch in which the ligaments are stressed but remain intact. A severe hyperextension can involve partial or complete tears of major ligaments, most commonly the ACL (anterior cruciate ligament) or PCL (posterior cruciate ligament) - Copper Fit

Knee Injuries

Huge forces are channelled through the knees when we stand up, walk or run, amounting to three to five times our body weight in normal daily use. And they must survive these extreme conditions every day while also giving us the flexibility that we enjoy whenever we move - Ralph Gambardella MD

Knee Osteoarthritis

Your knee routinely feels the force of five to eight times your body weight with every step, making it the most taxed joint of the human body. A knee is designed to withstand millions of steps during a lifetime, but sometimes all that stress can cause your knees to break down - Dr. Jordan Metzl

Knee Pain

Every joint in the body is subject to damage, but the knee is the best studied, perhaps because it is often injured and reasonably easy to diagnose - Stefan Lohmander MD

Knee Replacement

The post-surgery recovery is painful, hard, and your life will not be yours again for weeks, and months. It takes a full year, doctors say, to be completely healed - Martha Nelson

Knocked Out Teeth

The idea is to get the tooth back in the mouth as quickly as possible - Gene Solmundson DDS

Knowing Your Skin Can Save Your Life Melanoma

It’s uncomfortable to entertain even the possibility of cancer. But there’s one type of cancer you are basically sure to survive if you take just a little preventive action.

Kohlrabi

Kohlrabi is a unique vegetable. If you’ve never heard of kohlrabi, you aren’t alone - Melissa Kelly

Kombucha

Kombucha brewing dates back centuries in countries like China and Russia. It is produced by adding a pancake-shaped, rubber-like culture of bacteria and yeast to tea and sugar - Mike Estrel

Korsakoff Syndrome

Korsakoff’s syndrome (KS) is a residual syndrome in patients who suffered from a Wernicke encephalopathy (WE), but did not receive immediate and adequate treatment with thiamine replacement therapy. The most conspicuous symptom of KS is global amnesia, which can be very profound. In combination with other cognitive and behavioral deficits, usually present in more severe forms of KS, this may have far-reaching effects on daily life - Nicolaas JM Arts

Kratom

So if you want to treat depression, if you want to treat opioid pain, if you want to treat sleepiness, this [compound] really puts it all together - Edward Boyer MD

Kratom: Jekyll or Hyde?

Have you heard of the latest legal drug craze to hit a gas station near you? It’s called Kratom, and unlike bath salts, Spice or any of the synthetic, formerly ”legal” drugs on the DEA hit list, this one is entirely organic - David DiSalvo

Kwanzaa

Kwanzaa is a celebration of culture and universal truths that transcend religious boundaries. While one could assert that there is a spiritual content attached to Kwanzaa, the celebration itself is not associated with any organized religion or deity worship. -