health

Carpal Tunnel Syndrome Can Be Treated by Lifestyle Changes

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 | January 20th, 2020

Dear Doctor: After knitting, I sometimes get tingles in my right hand, and my doctor thinks it might be the start of carpal tunnel syndrome. What can I do to prevent it?

Dear Reader: Carpal tunnel syndrome is a common and often painful condition that occurs when the median nerve, which plays a role in movement and feeling in part of the hand, becomes squeezed or compressed. This happens as the nerve passes from the forearm to the palm via a narrow passageway in the wrist, known as the carpal tunnel. Formed in part by small wrist bones known as carpals, it’s hard and rigid and measures roughly an inch across. In addition to the median nerve, the carpal tunnel guides the nine flexor tendons that bend the thumb and fingers.

Injury, anatomy and certain health problems can contribute to developing carpal tunnel syndrome. People with metabolic disorders such as diabetes, inflammatory conditions such as rheumatoid arthritis, and those who are obese are at greater risk. Heredity can also affect the size of the carpal tunnel, and there is evidence the syndrome runs in families. The condition is three times more common in women than in men, and also is more common in older adults. Repetitive hand and wrist motions, like those used in knitting, sewing, assembly line work, playing an instrument and typing, also play a role. Performed over time, these actions can irritate the tissues around the flexor tendons and cause them to swell. When this happens, the carpal tunnel becomes crowded, which puts pressure on the median nerve.

Symptoms include tingling; numbness; weakness; pain; and a burning sensation in the hand, particularly in the palm, thumb, and second and third fingers. Sometimes, the pain can extend along the arm. In more severe cases, it’s possible for carpal tunnel syndrome to weaken grip strength, and to affect the ability to distinguish between cold and heat.

When the onset of carpal tunnel syndrome arises due to the health problems mentioned earlier, those should be addressed first. If the condition begins to develop due to overuse of the hands and wrists, lifestyle changes can be helpful.

Pay attention to wrist position while knitting and during the day. Keep your wrists in a neutral position and avoid extreme bending. You may have to change how you perform certain tasks, including your knitting technique. Some people find it helpful to wear wrist splints, which promote optimal hand position and minimize pressure on the median nerve. Take frequent breaks during any activities that involve the hands and wrists. Never rest wrists on hard or sharp surfaces, like the edge of a desk or a table. When using a keyboard or mouse, adjust seat height so wrists don’t have to flex. Gentle stretching and gentle massage, the use of cold to reduce swelling, and over-the-counter pain relievers can help. Recent studies have shown acupuncture to be clinically effective in reducing physical symptoms and improving grip strength. If your symptoms continue or become worse, please see your doctor.

(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.)

health

New Research Indicates Paleo Diet Isn’t Good for Your Heart

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 | January 17th, 2020

Dear Doctor: I’ve been doing paleo for a month, and I have lost 12 pounds. Now my mom is talking about a new study that says the diet is not good for your heart. Can you explain? Do you think it’s the same for keto?

Dear Reader: You’re referring to two popular approaches to weight loss that have captured the attention of many dieters. For those who may not be familiar with these eating plans, both entail limiting carbohydrate intake in some way. They also include a focus on proteins -- typically poultry, meat, fish and eggs -- as well as fats.

The paleo diet -- that’s short for Paleolithic -- relies on the nutrients that would have been available to our ancient ancestors through hunting and gathering during the Old Stone Age era. It eliminates foods obtained by farming and herding, such as legumes, grains and dairy products. The diet dates back to the 1970s, but it boomed in popularity beginning in 2002 after the publication of a paleo diet book. The paleo diet includes lean meats and fish, and limited amounts of certain fruits, vegetables, nuts and seeds.

The ketogenic diet, shortened to keto, was developed in the 1920s to manage some kinds of epilepsy. It recommends that fats account for 55% to 60% of daily nutrient intake, and that carbs make up no more than 10% of the daily diet. This leaves the remaining 30% to 35% of calories for protein.

Both diets trigger a metabolic process known as ketosis, which occurs in the absence of adequate carbohydrates, the body’s go-to energy source. It’s a lot more complex than we have time for in this column, but the bottom line is that when in ketosis, the body burns stored fat for energy.

Due to widespread interest in paleo and keto diets, and because each restricts various foods with essential nutrients, including vitamins, minerals, micronutrients and fiber, researchers are taking a closer look. Your mother is referring to a study published last summer in the European Journal of Nutrition. Scientists monitored the gut microbiomes of 45 people following the paleo diet, and compared them to a control group eating a balanced diet. After one year, the paleo group had significantly higher levels of a molecule known as TMAO (for fellow science nerds, that’s trimethylamine N-oxide), a marker associated with heart disease. The diversity of the gut microbiomes of the paleo group was also adversely affected.

Given the restrictive nature of these diets, as well as their high levels of meat and saturated fats, the results of the study are not surprising. This particular research didn’t look at the keto diet, but other studies have pointed to similar long-term health risks. In the short-term, however, we think low- and no-carb diets can be useful tools. We have seen this among our own patients, who use a low-carb approach to jump-start weight loss. We recommend that they minimize animal and saturated fats and instead focus on lean meats, seafood and plant-based fats, and then gradually transition to a well-rounded and sustainable diet.

(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.)

Nutrition
health

Popcorn Lung, Cobalt Lung Linked to Vaping

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 | January 15th, 2020

Dear Doctor: Our family is worried; my 18-year-old grandson won’t give up vaping. How many people have gotten sick? We just read about something called popcorn lung. What is that?

Dear Reader: Ever since the first cases of vaping illness were made public last August, the outbreak has made front-page news. The Centers for Disease Control and Prevention, one of several federal agencies monitoring the outbreak, publishes regular updates about the number of cases of vaping illness, as well as the deaths it has caused. As of December, at least 2,400 hospitalizations due to lung injuries associated with vaping have been reported to the CDC from all 50 states, Puerto Rico and the U.S. Virgin Islands. At least 52 people in 26 states and the District of Columbia have died. Doctors and surgeons compare the lung injuries they’re seeing to the kinds of chemical burns usually associated with industrial accidents.

But statistics can be a hard sell, particularly for teenagers. Maybe the case of a 17-year-old boy in Detroit, who recently underwent a double lung transplant after falling ill from vaping, will help make the risks seem more real.

One of the striking things about the outbreak is the number of rare lung conditions doctors are now diagnosing. One of these is hard-metal pneumoconiosis, commonly referred to as “cobalt lung.” It’s a form of pneumonia usually seen in people with long-term exposure to the airborne particulates caused by metal grinding.

Another is bronchiolitis obliterans, or “popcorn lung,” which is the disease you’re asking about. The nickname arises because the disease is linked to a butter-flavored chemical called diacetyl, which was once used in the manufacture of microwave popcorn. This rare form of bronchitis causes the tiny airways within the lungs, known as bronchioles, to become inflamed. This results in tissue damage, including scarring, which thickens and blocks the airways.

Symptoms of popcorn lung include a persistent dry cough and shortness of breath, which become more pronounced during exertion. Additional symptoms can include fatigue and wheezing that are not associated with asthma or illness. Diagnosis often begins with tests to determine lung function. Since chest X-rays can often appear normal in the early stages of the disease, high-resolution imaging tests such as a chest CT scan are often used. There is no cure at this time, so treatment focuses on managing symptoms to slow the progression of the disease. Depending on the individual case, this can include medication to lessen the body’s immune response and to ease inflammation. Antibiotics, cough suppressants and supplemental oxygen may also be used. In extreme cases, a lung transplant may be necessary.

Fortunately, there is also good news. Statistics show that the pace of the vaping illness outbreak is slowing. In addition, research now points to black-market vape products as a source of many of the lung injuries. Still, very little is known about the long-term effects of any kind of vaping. Unless they’re using legitimate products in order to stop smoking, we recommend that our patients don’t vape. The risks of this as a recreational practice are just too great.

(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

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