UCSF orthopedic surgeon Dr. Paul Toogood discusses the types and origins or Arthritis.
Category Archives: Health
Covid-19: “Superspreading Events” Responsible For Up To 80% Of Infections
From Scientific American (June 23, 2020):
In fact, research on actual cases, as well as models of the pandemic, indicate that between 10 and 20 percent of infected people are responsible for 80 percent of the coronavirus’s spread.
Researchers have identified several factors that make it easier for superspreading to happen. Some of them are environmental.
- Poorly ventilated indoor areas seem especially conducive to the virus’s spread – A preliminary analysis of 110 COVID-19 cases in Japan found that the odds of transmitting the pathogen in a closed environment was more than 18 times greater than in an open-air space.
- Places where large numbers of people congregate – As a group’s size increases, so does the risk of transmitting the virus to a wider cluster. A large group size also increases the chance that someone present will be infectious.
- The longer a group stays in contact, the greater the likelihood that the virus will spread among them – The benchmark used for risk assessment in her contact-tracing work is 10 minutes of contact with an infectious person, though the CDC uses 15 minutes as a guideline.
- Some activities seem to make it easier to spread respiratory gunk – Speech emits more particles than normal breathing. And emissions also increase as people speak louder. Singing emits even more particles, which may partially explain the superspreader event at the Washington State choir practice. Breathing hard during exercise might also help the spread of COVID-19.
Men’s Health Video: “First Prostate Checkup” (UCLA)
Dr. Jesse Mills, Director of The Men’s Clinic at UCLA talks about what to expect during a first prostate checkup.
Tributes: Sleep Medicine Pioneer William Dement Dies At 91 – “Drowsiness Is Red Alert” (1928 – 2020)
His mission was to educate the world about the importance of sleep, which he believed was dangerously undervalued. His motto, “drowsiness is red alert,” is a message he tirelessly broadcast to his students, trainees, members of Congress and the world at large.
William Dement, MD, PhD, known as the father of sleep medicine, died June 17 after a two-year battle with cardiovascular disease. He was 91.
With a handful of other scientists, Dement, a longtime faculty member of the Stanford School of Medicine, created the fields of sleep research and sleep medicine, and his many books and lectures helped raise awareness of sleep disorders and the dangers of sleep deprivation.
Dement’s many other accomplishments and accolades range far and wide: Dement and Guilleminault were the founding editors of the journal Sleep, the first major international journal devoted to sleep, publishing the first issue in 1978. He was the author of books for lay readers, including The Promise of Sleep, Some Must Watch While Some Must Sleep and The Sleepwatchers. The 2012 comedy film Sleepwalk with Me featured The Promise of Sleep and Dement in a cameo.
New Healthcare Tech: “Consult Station” By H4D – First Telemedicine Booth
H4D facilitates access to healthcare by allowing patients to consult a doctor remotely in the Consult Station®, the first connected local telemedicine booth. This medical device allows quality healthcare to be delivered for primary care, occupational health, and general health promotion.
Health Infographics: “Cancers Associated With Overweight & Obesity”
There is consistent evidence that higher amounts of body fat are associated with increased risks of a number of cancers (6), including:
- Endometrial cancer: Obese and overweight women are two to about four times as likely as normal-weight women to develop endometrial cancer (cancer of the lining of the uterus), and extremely obese women are about seven times as likely to develop the more common of the two main types of this cancer (7). The risk of endometrial cancer increases with increasing weight gain in adulthood, particularly among women who have never used menopausal hormone therapy (8).
- Esophageal adenocarcinoma: People who are overweight or obese are about twice as likely as normal-weight people to develop a type of esophageal cancer called esophageal adenocarcinoma, and people who are extremely obese are more than four times as likely (9).
- Gastric cardia cancer: People who are obese are nearly twice as likely as normal-weight people to develop cancer in the upper part of the stomach, that is, the part that is closest to the esophagus (10).
- Liver cancer: People who are overweight or obese are up to twice as likely as normal-weight people to develop liver cancer. The association between overweight/obesity and liver cancer is stronger in men than women (11, 12).
- Kidney cancer: People who are overweight or obese are nearly twice as likely as normal-weight people to develop renal cell cancer, the most common form of kidney cancer (13). The association of renal cell cancer with obesity is independent of its association with high blood pressure, a known risk factor for kidney cancer (14).
- Multiple myeloma: Compared with normal-weight individuals, overweight and obese individuals have a slight (10% to 20%) increase in the risk of developing multiple myeloma (15).
- Meningioma: The risk of this slow-growing brain tumor that arises in the membranes surrounding the brain and the spinal cord is increased by about 50% in people who are obese and about 20% in people who are overweight (16).
- Pancreatic cancer: People who are overweight or obese are about 1.5 times as likely to develop pancreatic cancer as normal-weight people (17).
- Colorectal cancer: People who are obese are slightly (about 30%) more likely to develop colorectal cancer than normal-weight people (18).A higher BMI is associated with increased risks of colon and rectal cancers in both men and in women, but the increases are higher in men than in women (18).
- Gallbladder cancer: Compared with normal-weight people, people who are overweight have a slight (about 20%) increase in risk of gallbladder cancer, and people who are obese have a 60% increase in risk of gallbladder cancer (19, 20). The risk increase is greater in women than men.
- Breast cancer: Many studies have shown that, in postmenopausal women, a higher BMI is associated with a modest increase in risk of breast cancer. For example, a 5-unit increase in BMI is associated with a 12% increase in risk (21). Among postmenopausal women, those who are obese have a 20% to 40% increase in risk of developing breast cancer compared with normal-weight women (22). The higher risks are seen mainly in women who have never used menopausal hormone therapy and for tumors that express hormone receptors. Obesity is also a risk factor for breast cancer in men (23).In premenopausal women, by contrast, overweight and obesity have been found to be associated with a 20% decreased risk of breast tumors that express hormone receptors (22).
- Ovarian cancer: Higher BMI is associated with a slight increase in the risk of ovarian cancer, particularly in women who have never used menopausal hormone therapy (24). For example, a 5-unit increase in BMI is associated with a 10% increase in risk among women who have never used menopausal hormone therapy (24).
- Thyroid cancer: Higher BMI (specifically, a 5-unit increase in BMI) is associated with a slight (10%) increase in the risk of thyroid cancer (25).
Top Health Infographics: A Detailed Look Into “Cancer’s Complexity”
Future Of Medicine: “The Rise Of Teledermatology”
From AMA.org (June 12, 2020):
“There’s an aging population, and there’s a lot of skin out there,” said Dr. Isaacs. “One in five people in the country develop skin cancer, but there is a plethora of benign skin conditions that also require the expertise of the dermatologist. So, you have increasing demand and a limited supply of dermatologists.”
A basic example of how the TPMG teledermatology program works involves a patient who is concerned about a suspicious lesion or mole on their body. The patient can take a picture of the location in question and send it to their primary care physician for review. The physician can request the patient come in for a more thorough evaluation, or if the physician determines that a dermatologist should be involved, they can send the photo to an on-call dermatologist to review.
If the patient does an in-person evaluation, the physician can also take a higher-quality image and forward that to a dermatologist. The dermatologist can then decide whether there is a problem, if a prescription is needed, or if there should be an in-person evaluation and potential biopsy.
A study in the Journal of the American Academy of Dermatology in 2019 found that when TPMG dermatologists had the chance to look at well-photographed skin lesions, they were able to identify nearly 10% more cancers with almost 40% fewer referrals to the dermatology department.
Future Of Healthcare: A Look At “Telemedicine” Growth In Next 5-10 Years
From McKinsey & Company (June 11, 2020)
For the past 10 to 15 years, virtual health has been heralded as the next disrupter in the delivery of care, but there has been minimal uptick in adoption. The COVID-19 pandemic is pushing against structural barriers that had previously slowed health system investment in integrated virtual health applications.
Travel Podcast: “What Will The Airline Business Look Like Post-Covid” (WSJ)
The Wall Street Journal looks at how air travel will change and what it will be like to fly after the pandemic.
Boomers Daily 