food and nutrition

How do we hear?

Sound waves, really variations in air pressure, are collected and directed towards the eardrum by our outer ear, where we hang our glasses and the ear canal. Those waves strike the eardrum (tympanic membrane), transmitting those vibrations to the three small bones of the middle ear - the malleus (hammer), incus (anvil), and stapes (stirrup). The mechanical linkage of the three amplifies the incoming vibrations and transfers them through the oval window, a membrane-covered opening that leads to the fluid-filled cochlea.

Cochlea" is derived from the Latin word for "snail shell" or "spiral," reflecting the distinctive and intricate spiral form of the cochlea, which is a critical component of the auditory system responsible for converting...

According to a 2022 study in the Netherlands, over the last three years, one in two researchers had engaged frequently in at least one “questionable research practice,” with “not submitting or resubmitting valid negative studies for publication” being the most common practice. The fields of life and medical sciences had the highest prevalence (55.3%) of engaging in questionable practices compared to other disciplines.        

According to the Office of Research Integrity, Department of Health and Human Services, scientific fraud or research misconduct involves:

  • Fabrication:...

 

“So just to get started, we know that an overall healthy dietary pattern has the potential to lower cancer risk by 10% to 20%, which seems like a lot to me.”

Those were the introductory words of Gabrielle Emanuel, Senior reporter at WBUR and the moderator of Harvard’s TH Chan School of Public Health discussion of “Reducing Cancer Risk Through Nutrition.”

Ms. Emmanuel went on to ask questions of the three panel members, Edward Giovannucci: Professor of Nutrition and Epidemiology and Timothy Rebbeck: Vincent L. Gregory, Jr. Professor of Cancer Prevention, both of T.H. Chan, and Eliza Leone: Registered Dietitian and Instructor in...

 

 

 

A California company has gotten itself in hot water with the FDA. You may not initially believe the rest of this, but it's reported by MedPage Today, one of the leading sources for "online health news sources, aggregators, and medical publishers" (1). It's real.

The FDA sent a warning letter to a California company called Dr. Joel Kaplan Inc. To say that the company is focused on the...

Part 1 discussed some of the advances already in existence.  Here are my guesses about some medical breakthroughs that are imminent. 

 

New antibiotics to treat antibiotic-resistant infections

Antibiotics have been with us for more than a century, but the miracles of the modern antibiotic era are usually considered to date from the availability of highly purified penicillin in the 1940s. Microorganisms are crafty, however, and they have developed many mechanisms to defeat the drugs designed to kill them. That means they can continue to grow and damage their host. Resistant infections can be difficult, and sometimes...

The data comes from the National Youth Tobacco Survey (NYTS), an annual, repeated cross-sectional survey of 186,000 US middle and high school students providing the current snapshot. Current e-cigarette use was defined as past 30-day use; age, race, and ethnicity were all self-reported. The missing data points from 2020 are due to COVID interrupting the survey.

All groups show significant reductions since 2019, returning to levels seen nearly a decade previously.

  • Current overall use is at roughly 9%, down from a high of 20% and up from an initial low of 3%
  • Males were greater users in the past; more females have taken up the torch lately.
  • Use among White...

The pharmacokinetics of ethanol and THC differ quite a bit. From a metabolic point of view, despite how some feel the “morning after,” ethanol has a short half-life of 1 to 2 hours. THC, whether smoked or swallowed, hangs around far longer, one to two days. While both ethanol and THC undergo metabolism in the liver, ethanol is primarily metabolized by alcohol dehydrogenase, forming water and CO2. By contrast, THC undergoes hepatic metabolism to form various metabolites, including the psychoactive 11-hydroxy-THC. Furthermore, THC, being a lipophilic (fat-loving) chemical, is stored in body fat, where it is slowly released.

Two problems arise:

  • We can equate a given blood level of alcohol with impairment, but that is not the case for THC because of its...

 National Public Radio (NPR) is concerned about a relatively small group of men who abstain from internet porn. Using language typically reserved for anti-vaccine gurus like RFK, Jr, the news outlet took aim at the websites where these "NoFap" advocates congregate, reporting last week that “Masturbation abstinence is popular online. Doctors and therapists are worried.”

The headline struck me as a little dramatic, so what exactly are these experts worried about?

“More than two decades of growing...

 

Ed Koch, one of my favorite NYC mayors, always asked, “How am I doing?” This is a good question, and the answer partly depends on what we measure. Econ training suggests we begin with GDP, but are there alternatives?

From EconLife, How Should We Measure Our Well-Being?

 

 

“Very few people are looking closely at the illegal sand system or calling for changes, however, because sand is a mundane resource. Yet sand mining is the world’s largest extraction industry because sand is a main ingredient in concrete, and the global construction industry has been soaring for decades. Every year the world uses up to 50 billion metric tons of sand,...

Three years after its first‐​in‐​the‐​nation drug  decriminalization measure (Measure 110) went into effect, Oregon’s lawmakers are poised to re‐​criminalize possessing and using drugs. Lawmakers note that Oregon’s overdose rate has risen dramatically and exceeded the national average since Measure 110 took effect in 2021.

I have...