Friday, February 15, 2019

Valentine's Day Heart Trivia

Since Valentine's Day falls this week, I thought the heart seemed like a good theme for this week's Health Tip.  Here are a few interesting items about your heart that you might not know.

How big is your heart?
Throughout your lifetime, your heart is about the same size as your fist.  It grows at about the same rate as your fist grows.

How long does it take for blood to get around the body and back to the heart?
About once every minute and a half your blood makes a complete round trip through your body.  That is about 1,000 times every day.

When was the first heart surgery performed?
In 1893, a prominent African American surgeon named Daniel Hale Williams performed the first cardiac surgical procedure in the US when he successfully repaired a tear of the outer layer of the heart.

Is chocolate good for your heart?
The answer is that chocolate can be both beneficial and harmful.  Consuming chocolate in moderate amounts has been shown to be associated with a reduced risk of cardiovascular disease.  Unfortunately, consuming chocolate in higher amounts actually cancels out the benefits, and then some, as a result of the higher sugar consumption.  Dark chocolate does contain less sugar, so you can eat a little more dark chocolate than milk chocolate.  Chocolate also contains a small amount of a cardiac stimulant, so for some patients, chocolate has been linked to a type of arrhythmia of the heart.

Is there a link between your heart rate and how long you will live?
There is actually abundant evidence that in all warm-blooded mammals, including humans, there is a link between heart rate and longevity.  The higher your resting heart rate, the lower your life expectancy.  Resting heart rate is most likely a result of both genetic factors and your lifestyle.  Regular exercise for instance, typically causes your resting heart rate to decrease.

Can you really die from a broken heart?
There is a type of cardiomyopathy, Takotsubo syndrome, which is also called "stress cardiomyopathy" or "broken heart syndrome."  This cardiomyopathy is a result of severe emotional or physical stress.  Severe stress causes elevation of pro-inflammatory chemicals in the blood which significantly increase the level of inflammation in the body.  Individuals who experience profound grief as a result of the loss of a spouse can have levels of inflammation high enough to cause heart damage.

What is Holiday Heart Syndrome?
Holiday heart syndrome is an acute disturbance of the heart's rhythm which is linked to excess alcohol consumption.  People often consume excess alcohol around certain holidays, leading to increased arrhythmias during or shortly after a holiday.  Atrial fibrillation is the most common arrhythmia seen.  The most common holidays associated with this condition are Thanksgiving, Christmas, and New Year's Eve.  It does not appear to be linked to Valentine's Day.

Does laughter benefit your heart?
It is true that laughter is good for your heart.  A hearty laugh can prompt blood vessels to expand then contract, which can increase your blood flow by up to 20%.  That can promote healthy blood vessels, which can help to ward off cardiovascular disease.  Laughter also helps to relax the whole body and trigger the release of endorphins.  It can lower blood pressure, reduce stress hormone levels, and improve immune function.  Sustained laughter is actually a good cardio workout.  It gets your heart pumping and burns about as many calories per hour as walking at a slow to moderate pace.  Laughter may really be the best medicine!

If you have any questions about the heart , please log into your account and send us your question. We are here to help.

Dr. Anita Bennett MD - Health Tip Content Editor

Friday, February 8, 2019

Dry Skin – Is It Serious?

Most people will have dry skin from time to time.  Some people do have more serious dry skin conditions, but for most of us, dry skin is caused by environmental factors that can be addressed or controlled.  You can do a lot to improve the condition of your skin, without seeing your doctor.

What are the symptoms of dry skin?

Symptoms can vary depending on your age, where you live, your overall health, as well as many other factors.  Here are some of the most common symptoms of dry skin:
  • Tightness of the skin
  • Skin that feels or looks rough
  • Itching
  • Flaking, scaling, or peeling of the skin
  • Cracking of the skin, which can sometimes be severe enough to bleed
  • Redness
  • Gray or ashy appearance
What can cause dry skin?
  • Low atmospheric humidity - If you live in a desert region, the air is dry all year round.  In other areas, the humidity levels plummet during the winter.
  • Heat - Central heating, wood-burning stoves or fireplaces, and space heaters can all reduce the humidity in your home.
  • Hot showers - Taking long, hot showers can wash all of the protective oils off your skin.
  • Harsh soaps or detergents - Many soaps and shampoos can strip the oils from your skin.
  • Exposure to chemicals - Cleaning products contain drying chemicals.  Chlorine in pools also causes drying of the skin.
  • Medical skin conditions - Patients with eczema or psoriasis are prone to dry skin.
How can you prevent or treat dry skin?
  • Humidify the air - If your local humidity is very dry, whether seasonally or year-round, consider a humidifier for your home.
  • Moisturize - Use a thick moisturizing cream every day, especially just after your bath or shower to keep moisture from escaping through your skin.  If you have to wash your hands frequently, consider using a small amount of moisturizer after each washing.
  • Limit water exposure - Keep baths or showers to 10 minutes or less, and try warm water instead of hot.  Wear rubber gloves if you have to expose your hands to water frequently.
  • Avoid soaps or shampoos that are drying - Try soaps with added moisturizers; try a moisturizing shampoo; use a moisturizing conditioner after you shampoo; avoid antibacterial soaps.
  • Avoid hand sanitizers and other alcohol-based products on your skin as much as possible.
  • Avoid folding clothes that have just come out of the dryer.
If your dry skin does not improve despite all of these measures, you might have a more serious medical skin condition, such as eczema.  If you have open sores, large areas of redness, peeling or scaling skin, or itching that interferes with your sleep, you should see your doctor to have it evaluated.

If you have any questions about dry skin, please log into your account and send us your question. We are here to help.

Dr. Anita Bennett MD - Health Tip Content Editor

Friday, February 1, 2019

Can High Blood Pressure Shrink Your Brain?

We have known for many years that high blood pressure increases your risk for a variety of conditions, including heart disease, stroke, kidney failure, vascular disease, and vision loss.  We have also known that older adults with longstanding high blood pressure have some atrophy, or shrinkage, of the brain. 
Based on increasing objective data about the risks of high blood pressure, the guidelines for treatment of high blood pressure change every few years.  You may recall a Health Tip that I wrote back in August about the most recent hypertension treatment guidelines, which recommended treating hypertension at lower levels than in the previous guidelines.


Within the last several weeks, two important studies have been published, which give us even more information about the effects of high blood pressure on the brain.  I thought this would be a great topic for our Health Tip this week, because it is such an important issue.

One study looked at the volume of gray matter (GM) in the brains of healthy young adults without diagnosed high blood pressure.  This was combined data from 4 different cross sectional studies.  They grouped the study participants into 4 groups based on their resting blood pressure (BP) levels.  The first group had BPs below 120/80, and the last group had blood pressures greater than 140/90, with the other two in between.

Overall, they found that young adults with elevated blood pressure were more likely to have lower GM volume in multiple areas of the brain.  They noted that this effect was seen at a BP level starting at 120/80, worsening with higher levels.

The researchers concluded "Our study shows that BP-associated GM alterations emerge continuously across the range of BP and earlier in adulthood than previously assumed.  This suggests that treating hypertension or maintaining lower BP in early adulthood might be essential for preventing the pathophysiologic cascade of asymptomatic cerebrovascular disease to symptomatic end-organ damage, such as stroke or dementia."

The other study evaluated the effect of intensive BP control on the risk of cognitive decline and dementia.  This was a large study done over 5 years, with 3 years follow up afterwards.  The participants were 50 or older and had hypertension, but not diabetes, or history of stroke.  They randomly assigned them to two groups: one with intensive treatment, with a goal of a systolic blood pressure of less than 120, and the second to the standard of treatment at the time of the start of the study, with a goal of a systolic pressure of less than 140.

They found that intensive blood pressure control significantly reduced the risk of mild cognitive impairment, as well as the combined rate of mild cognitive impairment or probable dementia.  When they measured the incidence of probable dementia alone, although there were more cases in the standard group than the intensive treatment group, the difference was not statistically significant.

The lead researcher stated "We hope to have guidance, based on this and subsequent studies that will more definitively show how to slow or even stop dementia well before symptoms appear."

These two studies give us important information about the risks that high blood pressure poses to the brain and its function.  This information underlines the importance of screening for high blood pressure at a young age, as well as the importance of good blood pressure control if you do have high blood pressure.

If you have any questions about the effects of high blood pressure, please log into your account and send us your question. We are here to help.

Dr. Anita Bennett MD - Health Tip Content Editor