health

Persistent Hiccups Could Be Indication of Something Serious

Ask the Doctors by by Eve Glazier, M.D. and Elizabeth Ko, M.D
by Eve Glazier, M.D. and Elizabeth Ko, M.D
Ask the Doctors | April 10th, 2020

Dear Doctor: My husband frequently has hiccups, and sometimes they last for days. What causes them? Is there any way to make them stop?

Dear Reader: Hiccups are due to a sudden and involuntary contraction of the diaphragm. That’s the dome-shaped structure that separates the thoracic cavity, also known as the chest cavity, from the abdominal cavity. The diaphragm, which is made up of muscle and membranes, serves both as the floor of the thoracic cavity and the roof of the abdominal cavity. Its motion is responsible for your ability to inhale and exhale. The diaphragm also plays a propulsive role in sneezing, coughing, crying, vomiting and eliminating feces and urine.

When you’re breathing normally, the diaphragm contracts and flattens out, moving downward in a smooth motion as you inhale. The lungs expand into the added space, which allows air to enter. The exhale occurs when the diaphragm returns to its natural domed shape, which crowds the supple lung tissues and forces the air out. When something causes the diaphragm to flatten suddenly in a convulsive motion, the resulting inward rush of air causes the structures at the top of the windpipe, including the vocal cords, to snap shut. This makes the distinctive “hic” sounds that gives the hiccups their name.

You can get the hiccups for no apparent reason. They are also associated with common triggers such as eating too much or too quickly; foods that are hot or spicy; fizzy beverages; alcohol; smoking; and emotional extremes, like stress, fear, or getting excited and laughing. In most cases, hiccups will clear up on their own, as quickly and mysteriously as they appeared.

When they last for more than a few days, or even a few weeks, they are known as persistent hiccups. When the condition lasts for more than a month, which is rare, they are referred to as intractable, or chronic, hiccups. For reasons that are not fully understood, these are more common in men than in women. Charles Osborne, a farmer in Iowa, had the hiccups for 68 years, a fact that earned him a spot in the Guinness Book of World Records.

Persistent hiccups are associated with irritation or damage to the phrenic or vagus nerves, which travel to the diaphragm. These can include growths in the neck, such as a cyst or tumor; gastroesophageal reflux disease, or GERD; or even just a sore throat. They have also been associated with serious conditions, such as kidney disease, diabetes, multiple sclerosis and stroke. For some people, general anesthesia during surgery can cause the onset of persistent hiccups.

Prolonged hiccups can interfere with eating, sleeping and quality of life. It would be a good idea for your husband to check with your family doctor for a diagnosis. Blood, imaging or endoscopic tests may be used to see if an underlying medical condition is causing the episodes. Treatment can include certain medications, including muscle relaxants, sedatives or anticonvulsants. Some patients report success with acupuncture or hypnosis. In the most severe cases, surgery can be an option, but potential complications can be severe.

(Send your questions to askthedoctors@mednet.ucla.edu, or write: Ask the Doctors, c/o UCLA Health Sciences Media Relations, 10880 Wilshire Blvd., Suite 1450, Los Angeles, CA, 90024. Owing to the volume of mail, personal replies cannot be provided.)

Physical Health
health

Occasional Naps Linked to Decreased Heart Disease and Stroke

Ask the Doctors by by Eve Glazier, M.D. and Elizabeth Ko, M.D
by Eve Glazier, M.D. and Elizabeth Ko, M.D
Ask the Doctors | April 8th, 2020

Dear Doctor: I take a short nap at my desk a couple of times a week (I use earplugs and a mask), which my podmates love to tease me about. I just read that napping is good for your heart, but they say if you take a nap during the day, you won’t sleep as well at night. Who’s right?

Dear Reader: While it’s certainly possible that for some people, a midday nap may interfere with the quality of nighttime sleep, it’s not a given. In fact, a robust body of research has found numerous benefits of napping, both to physical and mental health. Napping has been shown to improve mood, increase alertness, improve performance and stave off late-afternoon fatigue. In many cultures, such as with the Spanish “siesta,” the Italian “riposo” and the Japanese “inemuri,” it’s an integral part of daily life. Here in the United States, the benefits of napping have led a growing number of employers to encourage their workers to take advantage of a lunchtime recharge. Some of the larger tech companies have even installed specially designed recliners, called nap pods, which weave the idea of napping into their corporate culture.

Most recently, a study published in the journal Heart has linked the practice of occasional napping to a decreased risk of heart disease and stroke. Researchers in Switzerland analyzed the nighttime sleep, daytime napping and general lifestyle habits of 3,462 adults between the ages of 35 and 75. About 20% of the study participants reported napping once or twice a week. At the end of eight years, the data suggested that those individuals had a lower risk of heart problems than the non-nappers. Interestingly, the same health benefits didn’t extend to the most frequent nappers in the study, who researchers said tended to be older men who smoked and were overweight.

The exact reason for the better health outcomes of the occasional nappers aren’t known. But inadequate sleep has been linked to a number of health problems, including high blood pressure, depression and heart disease, and the researchers suggested it’s possible that occasional napping helps to make up for sleep deficit.

That said, there’s an important distinction between a 10-to-20-minute nap in the middle of the day and dropping into deeper sleep for an hour or longer, particularly in the later afternoon. In those cases, not only do you run the risk of waking up thickheaded and groggy, which can take hours to shake off, it’s possible for a late-day dive into sleep to interfere with nighttime sleep. The goal of a nap is to wake up feeling refreshed. To achieve that, you want to limit your nap to less than 20 minutes. That lets you get the rejuvenating benefits of the early stages of non-REM sleep. If you stay asleep much longer, you run the risk of diving into the deeper stages of the 90-minute sleep cycle. Waking up from deeper sleep often leaves you feeling dazed and disoriented, and it can take hours to fully recover.

(Send your questions to askthedoctors@mednet.ucla.edu, or write: Ask the Doctors, c/o UCLA Health Sciences Media Relations, 10880 Wilshire Blvd., Suite 1450, Los Angeles, CA, 90024. Owing to the volume of mail, personal replies cannot be provided.)

Sleep
health

What Are Viruses, and How Do They Work?

Ask the Doctors by by Eve Glazier, M.D. and Elizabeth Ko, M.D
by Eve Glazier, M.D. and Elizabeth Ko, M.D
Ask the Doctors | April 6th, 2020

Dear Doctor: Everybody is talking about the coronavirus right now, but I still don’t really know what a virus is. How do they work? Why don’t antibiotics kill them?

Dear Reader: You’re far from alone in your struggle to understand viruses. They are simultaneously simple and quite complex, and so small that it wasn’t until the invention of the electron microscope almost 90 years ago that we were even able to see them.

A virus is neither plant nor animal; it isn’t a bacterium, fungus or one-celled organism; and it can’t live or reproduce outside of a living host cell. Considering all that, it’s not surprising that the scientific community continues to debate whether or not viruses are even alive. In fact, it’s almost easier to talk about what a virus isn’t than to explain what it is. But we’ll do our best.

A single virus particle is known as a virion. It’s a packet of genetic material -- either DNA or RNA -- wrapped in a layer of proteins, known as a capsid. In many kinds of viruses, the protein shell is topped by a layer of lipids, a type of organic compound that’s roughly comparable to fat and is not soluble in water. Taken together, the protein and lipid structure is known as an envelope.

Viruses are mind-bendingly small. They range from about 20 nanometers to upward of 300 nanometers in size, with many tending toward the lower end of the scale. As a point of reference, there are 25.4 million nanometers in one inch. Viruses come in a wide range of shapes, including circular, cylindrical and stringlike. Some, like the coronavirus, are studded with spikes. These act as docking devices to attach to host cells and then use their unique chemical composition to penetrate the cell membranes.

The sole purpose of a virus is to infect another organism -- either an animal, plant or bacterium -- make billions of copies of itself and then move on to infect a new host. Small wonder the name for these infectious agents derives from a Latin word that roughly translates to “poisonous slime.”

To achieve its aim, the virion injects its genetic material into the host cell and hijacks that cell’s internal machinery. Instead of doing its designated job, the cell now goes to work replicating the virus. Each virion is so ruthlessly efficient, it can force a cell to make a million copies. The infected cells send out a chemical distress signal in the form of proteins known as cytokines. They set off the inflammatory reaction that causes our immune systems to attack, which results in the symptoms we feel when we’re sick, such as fever, congestion, coughing and sneezing, headache, body aches and gastric distress.

You are correct that antibiotics have no effect on viral illnesses. Antibiotics work by breaching a bacterium’s cell walls, which viruses don’t have, or disrupting its reproduction, which viruses do differently. Due to antibiotic resistance, which is now a serious problem, it’s important not to use these drugs to fight a viral infection. Instead, for viruses such as the flu, your doctor will prescribe an antiviral, which works by interfering when the virus tries to force the cell to make copies of it.

(Send your questions to askthedoctors@mednet.ucla.edu, or write: Ask the Doctors, c/o UCLA Health Sciences Media Relations, 10880 Wilshire Blvd., Suite 1450, Los Angeles, CA, 90024. Owing to the volume of mail, personal replies cannot be provided.)

COVID-19

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