How the Mid-Victorians Worked, Ate and Died

Tuesday, June 18th, 2013

Clayton and Rowbotham look at how the mid-Victorians worked, ate and died — which was surprisingly well, really:

Analysis of the mid-Victorian period in the U.K. reveals that life expectancy at age 5 was as good or better than exists today, and the incidence of degenerative disease was 10% of ours. Their levels of physical activity and hence calorific intakes were approximately twice ours. They had relatively little access to alcohol and tobacco; and due to their correspondingly high intake of fruits, whole grains, oily fish and vegetables, they consumed levels of micro- and phytonutrients at approximately ten times the levels considered normal today.

[...]

Given that modern pharmaceutical, surgical, anaesthetic, scanning and other diagnostic technologies were self-evidently unavailable to the mid-Victorians, their high life expectancy is very striking, and can only have been due to their health-promoting lifestyle. But the implications of this new understanding of the mid-Victorian period are rather more profound. It shows that medical advances allied to the pharmaceutical industry’s output have done little more than change the manner of our dying. The Victorians died rapidly of infection and/or trauma, whereas we die slowly of degenerative disease. It reveals that with the exception of family planning, the vast edifice of twentieth century healthcare has not enabled us to live longer but has in the main merely supplied methods of suppressing the symptoms of degenerative diseases which have emerged due to our failure to maintain mid-Victorian nutritional standards.

One Kid’s Personal Tennis Academy

Thursday, June 6th, 2013

Adam Neff’s parents — both doctors — didn’t want to send him away to a tennis academy, so they built their own:

When Adam was 7, they visited an academy in France that wanted Adam to live there.

“I said no, that’s my buddy, he’s coming home with me,” Adam’s father said. Then the Neffs got to thinking: They wanted to move to Florida, where they had trained to become doctors. A friend introduced them to Luciani, who had worked at Nick Bollettieri’s academy for nine years and was now teaching privately.

“I just said, wait a second here, let’s completely change the way we’re thinking of this—let’s go out to the country and build the mountain,” Ann said. “The amount that we would have spent to buy a nice house in some community somewhere, we can put in our own courts.”

The Neffs bought the property in 2011. They built an addition to the house and cleared the yard, which was overrun by palmettos, scorpions and snakes. The three courts will cost around $160,000. They pay Luciani for private coaching; he maintains the facility and the CVAC pod, which he leased for $110,000 for five years, he said.

Luciani teaches Adam, Adam’s 10-year-old sister, Katarina, and Lancelot full-time, and several others part-time, with the help of his stepdaughter, Emily Mowery, a former player at the University of Miami. The youngest Neff, 5-year-old Isabella, recently hit her first ball—”She knocked the glasses off my face,” Luciani said—and will start training with him soon. He’s considering other students, but doesn’t want to have more than eight.

“It’s more a center for private coaching than an academy,” he said.

Adam and Katarina are home-schooled in the Kumon curriculum by a tutor. Adam also takes French and Spanish. They study between and after practice sessions.

When I started watching the video, I expected him to look… better.

Endurance Training Can Be Harmful

Monday, May 27th, 2013

Evidence is mounting that endurance training can be harmful — beyond 30 miles of running per week:

“Heart disease comes from inflammation and if you’re constantly, chronically inflaming yourself, never letting your body heal, why wouldn’t there be a relationship between over exercise and heart disease?” said John Mandrola, a cardiac electrophysiologist and columnist for TheHeart.org.

Yet sports-medicine specialists are sharply divided over whether any warning is warranted. For every American who exercises to extremes, after all, there are thousands who don’t exercise at all — and who might embrace any exercise-related warnings as cause for staying sedentary.

That second paragraph reminds me why one-size-fits-all public health recommendations are so… bad. We can’t tell the truth, because some people might misunderstand it. Perhaps we need a more Straussian approach to public health.

How Doping Made Its Way Up Everest

Thursday, May 23rd, 2013

When I first read about mountaineers summiting Everest without supplemental oxygen, I assumed they were doping and wondered how this was seen within the climbing community:

High-altitude climbers have long used substances banned by the World Anti-Doping Code — everything from amphetamines to steroids to acclimatization aid acetazolamide, or Diamox, which prevents acute mountain sickness. The erectile-dysfunction drugs Viagra and Cialis are also common, since they decrease pulmonary-artery pressure, and if you talk to enough people you’ll hear rumors about climbers using EPO, the red-blood-cell booster popular with pro cyclists. Yet, due to the unique health challenges at altitude, the line between staying safe and getting a leg up has always been blurry.

Not counting Diamox, which carries minimal risk, dex is by far the most popular mountaineering drug. Banned by the World Anti-Doping Agency (WADA) but endorsed as a high-altitude rescue tool by the Wilderness Medical Society, dex works like most cortico-steroids, supplying synthetic cortisol to the body and suppressing inflammation. In the brain it stabilizes cell membranes, preventing fluid from leaking out of blood vessels into the surrounding tissue.

Because it inhibits cerebral swelling, dex is a terrific life rope for climbers who start to show signs of edema. It’s most often taken in pill form, but it can also be injected during emergencies. High-altitude doctors refer to it as a magic bullet, and some Spanish-speaking mountaineers have taken to calling it levanta muertos, because, as Argentine guide Damian Benegas says, “it brings life to a dead person.” The most famous case of this occurred during the 1996 Everest disaster, when Beck Weathers rose from a comatose state after Alpine Ascents guide Pete Athans gave him dex.

Over the past two decades, climbers have discovered that dex also works magic on the way up, increasing lucidity and triggering feelings of euphoria. This is where the trouble starts, because people who take cortico-steroids for more than a week impair their immune systems: adrenal glands that naturally produce cortisol are essentially shut off by the drug and stop responding to stress. As a result, wounds don’t heal quickly, and users are susceptible to infection. Emotional swings are also common after prolonged use, though doctors still don’t understand the precise mechanism for that.

Many in the medical community argue that dex should be employed only in life-threatening scenarios, since prophylactic use masks HACE symptoms and reduces the drug’s efficacy in the event of emergency. “You basically take away your safety rope by using it on the way up,” says Dr. Luanne Freer, the 55-year-old founder of the Everest ER clinic. “If you get stuck in a storm, then we have nothing to give you as a rescue drug.” Adds leading dex expert Dr. Robert “Brownie” Schoene, of Berkeley, California, “It is probably the one drug that has been abused in terms of enhancing mountaineering performance.”

This is due in part to how easy it is to obtain. You can fill a prescription at any pharmacy (Easterling’s source: Target) or buy it on the street in Nepal for five cents a dose. And demand is on the rise as Everest clients dishing out $70,000 per climb look to increase their odds of summiting. According to Bill Allen, co-owner of the Colorado outfitter Mountain Trip, half of his clients ask about dex before setting out for Everest. Johnson, the Everest ER doctor who treated Easterling, says, “I would be shocked if 50 percent of Everest climbers aren’t using dex at Camp III and above.” And not just clients: “I’ve had highly paid, sponsored climbers and guides — people whose names you’d know right away — ask me about dex. They don’t want their clients or anyone else to know they’re using it.”

Females and Eating Disorders

Friday, May 3rd, 2013

Females are four to 10 times more likely than males to have an eating disorder — presumably because of social pressure to be thin.

But female rats are also much more likely than male rats to have an eating disorder:

Klump and colleagues ran a feeding experiment with 30 female and 30 male rats over a two-week period, replacing the rodents’ food pellets periodically with vanilla frosting. They found that the rate of binge eating “proneness” (i.e., the tendency to consume the highest amount of frosting across all feeding tests) was up to six times higher in female as compared to male rats.

Human Effect Matrix

Monday, April 29th, 2013

Examine.com has compiled a database of research papers on nutritional supplements and produced a Human Effect Matrix:

For every supplement in our database, a handy table will tell you what effect each supplement has and how noticeable that effect is.

Does Supplement X help with Y? Now you’ll know.

Creatine? It has a minor effect in increasing your testosterone, but a strong effect in increasing your power output. What about fish oil? It has actually has a notable effect in decreasing depression!

Best of all, the Human Effect Matrix isn’t on the supplement pages only. They are also on the effect pages themselves. Want to know which supplements impact inflammation? Done! Do any supplements help you add muscle? Now you know. (Spoiler: they all have, at most, a minor effect).

What we’ve done is removed all the mysticism, hyperbole, and marketing-speak used to talk about supplements. It’s all tabulated and organized for your perusal, and it’s all backed with citations with human-studies.

To get you going, here are a few popular and a few interesting supplements:

U.S. Track’s Unconventional Physician

Tuesday, April 16th, 2013

Endocrinologist Jeffrey S. Brown has successfully treated a number of patients for hypothyroidism — patients who were extremely healthy Olympic athletes:

On the wall of the medical office of Jeffrey S. Brown is a photograph of Carl Lewis, the nine-time Olympic gold medalist. Lewis is one of several former or current patients of Brown’s who have climbed the Olympic podium, including Galen Rupp, who won a silver medal in the 10,000 meters at the London Olympics.

“The patients I’ve treated have won 15 Olympic gold medals,” said Brown.

[...]

The medication typically prescribed for hypothyroid is a synthetic thyroid hormone known generically as levothyroxine. That drug is not a banned substance by the World Anti-Doping Agency and by all accounts has never been shown to enhance performance. Taking it requires no disclosure, and no permission from antidoping authorities.

The Ultimate Strength Exercise

Wednesday, April 10th, 2013

In the early 1960s Dr. John Ziegler introduced the ultimate strength exercise, and Bob Hoffman, owner of York Barbell and Strength and Health magazine, promoted it. It was called functional isometric contraction:

While very few sports coaches or athletic directors in high schools and colleges approved of lifting weights, they embraced the isometric system wholeheartedly. What the school administrators and coaches liked about isometric training was it was neat, no plates to store or pick up after, safe, and quick. An entire football team of forty players could go through a workout in a half and hour. Sometimes even less than that.

Power racks sprung up everywhere.

York Barbell sold metal and wood power racks — but Hoffman discontinued the wood version, once he realized people were using them to make copies.

In Strength and Health, Hoffman touted the progress made by 23-year-old Bill March:

Bill weighed 176 and had won the 1960 Middle Atlantic Title with a three-lift  [press, snatch, clean & jerk] total of 745.

Bill was the poster boy for isometric training. His lifts climbed steadily at a pace that few could believe. He blew past an 800 total and kept right on going. He moved up to the 198-lb. class and started winning everything in sight. No one had ever seen anyone make such startling improvement in so short a period of time. At the ’63 Philly Open, Bill pressed 354 to set a world record in the middleheavyweight class. Hoffman couldn’t manufacture power racks fast enough to keep up with the demand.

Fast forward six years. Isometrics and also the combination of isotonics and isometrics had all but disappeared from strength training in sports.

How did isometrics become known as a fraud and a farce? Well, young Bill March’s regimen included some other potent elements that didn’t get as much coverage as his power-rack routine.

It all started back in 1954, when Dr. John Ziegler followed the United States Olympic Weightlifting team to the World Championships in Vienna as their team physician and learned a few secrets from the Russians:

During one of the drinking bouts, well past midnight, the Russians’ tongues began to loosen up and Doc knew the right questions to ask. Ziegler learned that the lifters were experimenting with strength-enhancing drugs and also using a form of exercise that helped make them stronger by exerting maximum pressure against a bar in a fixed position.

Back home in Olney, Ziegler began scanning the research, something he enjoyed. He came across enough pure research to convince him that the concept of isometric training could produce results and put together a program which he used on himself in his well-equipped home gym next to his house and office. He also built the first power rack that would be the prototype for the Super Power Rack that Hoffman would sell later on. He pitched his idea to Hoffman, but Bob wasn’t interested. What Ziegler was proposing was too close to the dynamic tension system that Charles Atlas and George Jowett had made a living on for a good many years. Bob had been speaking out against dynamic tension ever since he had taken over Strength and Health magazine. He saw no way to make money on isometrics at that time.

Meanwhile, Ziegler dug around in yet more research and came up with a formula to make a drug that would help build muscle and attachment tissue. This was to be used to help rehabilitate burn patients or those who had been bed-ridden for a long time. His specialty was physical rehabilitation, and he believed he had a miracle drug in the making. He took his idea to CIBA Pharmaceuticals. They quickly saw the value of such a drug, and in 1960 produced a little pink pill called Dianabol (the color was later changed to blue for some reason I can’t determine).

Again, Ziegler tested the drug on himself and used isometrics at the same time. Within a few months, he knew he was onto something big and once again approached Hoffman. Ziegler wanted to try his new drug and new form of training on a young Olympic lifter

For several years, Hoffman had resisted Ziegler’s overtures about marketing isometrics through S&H. Then, in 1959 a renowned authority in the field of kinesiology and applied anatomy, Dr. C. H. McCloy of Iowa State University, submitted a study for publication. The study showed that non-apparatus exercise done in an isometric fashion led to marked increases in strength. This was the exact same thing that Ziegler had been telling him for several years.

There were two things that motivated Hoffman: greed, and an almost obsessive hatred of Joe Weider. This isometric idea was going to take off, and if he lollygagged any longer Joe was going to jump in and make it his own. And since both Ziegler and McCloy had noted that isometrics were not only useful to athletes in a wide variety of sports, and for competitive weightlifters, they were equally as beneficial to bodybuilders. He let Ziegler know he was ready to sponsor the testing of the isometric program and also the strength-enhancing drug. In the meantime, he set about ordering a shit-load of power racks to be made at his foundry.

[...]

Doc would put March through his workout and give him his daily dose of Dianabol, one tablet for two weeks, two for two weeks, and four for two more weeks. He never gave Bill a prescription for the drug. In fact, I never knew anyone who got a script for any drug from Ziegler. He was extremely conservative about handing out medication and knew that an athlete would always cheat to some degree. Their highly competitive personalities would prompt them to take more and more to achieve the success they were seeking. So Bill went through an isometric workout five times a week and did the three lifts plus squats on Saturday at the York Gym. His progress came fast and often until he was one of the best in the world in a matter of only a few years.

Doc Ziegler improved his isometric routine into a new and improved isotonic-isometric system, but once everyone found out about Dianabol, it didn’t really matter. By the mid-1960s, average lifters were making superhuman gains, regardless of what routine they chose.

Optimal Music for the Gym

Sunday, April 7th, 2013

The benefits of music seem most pronounced during low-to-moderate-intensity exercise:

A study published last year in the Journal of Sports Medicine and Physical Fitness found that cyclists who synchronized their movements to music reduced oxygen uptake by as much as 7%. The study tested three different musical tempos on 10 men who cycled for 12 minutes at 70% maximal heart rate.

Another experiment, involving 30 people walking on treadmills, found that exercising at the same tempo as the music boosted endurance. One group of participants walked with motivational music, another with neutral music and a third with no music. Endurance increased in both groups listening to music, although the motivational music had the greatest effect. The study was published in the Journal of Sport & Exercise Psychology in 2009.

Experts say most of the benefits of working out to music come from psychological factors. “When people run with music their rate of perceived exertion is lower than if they don’t use music or other devices,” says Gershon Tenenbaum, director of the graduate program in sport and exercise psychology at Florida State University. These benefits tend to evaporate once a person begins exercising at very intense levels, he says.

Dr. Tenenbaum says similar benefits have been observed when athletes are told to imagine they are in a certain location, such as at the beach, or are exposed to particular smells, such as lavender.

David-Lee Priest, a researcher at the University of East Anglia in Norwich, England, says music is able to divert attention through a neurological mechanism. The unpleasant feedback from exercising, such as difficulty breathing, sweating or stiff muscles, is transferred to the brain using the afferent, or sensory, nervous system. Listening to music interferes with the transmission of those sensations, he says. “Before you become aware of the fatigue the music will block out the sensations of fatigue and effort so you won’t fully notice them,” he says. That blocking occurs only up to a point — about 70% of one’s maximum capacity, he says.

With resistance training, the benefit of music occurs more before one starts exercising or in between sets, Dr. Priest says. “It’s like taking a mild stimulant.…It will increase your heart rate and blood pressure slightly.”

In a recent study, Dr. Karageorghis and colleagues tested the effects of music on swimmers. After three weeks in which the athletes got used to swimming with ear buds, the researchers conducted three experiments using 26 collegiate swimmers who completed the 200-meter freestyle trials. They listened to motivational music, neutral music and no music. Both music groups saw a three-second improvement in performance compared to their race times without music. Although this represented just a 2% improvement, Dr. Karageorghis says it’s enough to make a difference in the realm of competitive swimming.

Women Are Generally Physically Weaker

Friday, April 5th, 2013

Men run much faster than women — to the point that being in the top five percent of young women would put you just outside the bottom five percent of young men — and men are much stronger than women, too.

Saying this is sexist, of course, and a sign that you shouldn’t be allowed to write female characters:

If you’ve ever had an issue with some of the women’s characters on AMC’s The Walking Dead — the root of the problem might be in the source material. Robert Kirkman, the creator of the comics, definitely has some… issues… with women.

Simon Abrams from the Village Voice reports Kirkman told him in an interview for The Comics Journal four years ago:

I don’t mean to sound sexist, but as far as women have come over the last 40 years, you don’t really see a lot of women hunters. They’re still in the minority in the military, and there’s not a lot of female construction workers. I hope that’s not taken the wrong way. I think women are as smart, resourceful, and capable in most things as any man could be … but they are generally physically weaker. That’s science.

First up, Kirkman, you totally do mean to sound sexist, so shut it with the crappy, disingenuous concern.

Since when do you need massive amounts of strength to hunt, even as they do on The Walking Dead? The average fit person would be good to go — especially if they’d all been living under the same circumstances for so long. Plus, if we want to speak “in general”, then women have more stamina than men — even swole bro trainers agree — and that’s probably more crucial than being ripped when it comes to hunting.

By the way, women do not have more stamina than men:

The average VO2max is about 33 milliliters of oxygen per kilogram of body mass per minute for sedentary young women and around 42 ml/kg/min for sedentary young men (Bouchard et al., Medicine and Science in Sports and Exercise 30: 252-8, 1998). Elite female distance runners can sometimes reach VO2max readings of 70+ ml/kg/min (Pate et al., International Journal of Sports Medicine 8 (Suppl.): 91-5, 1987), whereas elite men can attain values in the 80s (Pollock, Annals of the New York Academy of Sciences 301: 310-22, 1977).

Running Like a Girl

Wednesday, April 3rd, 2013

It’s no secret that men run faster than women, but these two tables from Paediatric Exercise Science and Medicine demonstrate just how much faster young men are than young women:

Percentile Ranks for 50-m Sprint for Boys

Percentile Ranks for 50-m Sprint for Girls

In a 50-meter sprint, the average time for an 18-year-old guy is 7.3 seconds (±0.5 s), while the average time for an 18-year-old girl is 9.1 seconds (±0.7 s).

One girl in ten can run 50 meters in 8.2 seconds, which is fast enough to put a guy below the 5th percentile.

One girl in a hundred can run 50 meters in 7.6 seconds, which is fast enough to put a boy in the 25th percentile.

So, the number of girls who can run as fast as the average guy is roughly zero.

It didn’t realize it was that extreme.

Different Traits at Different Ages

Tuesday, March 19th, 2013

We think of people as having traits, Peter Turchin says, when we need to realize that people have different traits at different ages:

Because abilities to do something at the age of 10, 30, 50, etc. are separate (even if correlated) traits, they evolve relatively independently of each other. When grains became a large part of the diet, the ability of children to digest them (and detoxify the chemical compounds plants put into seeds to protect them against predators such as us) became critical. If you don’t have genes to help you deal with this new diet, you don’t survive to adulthood and don’t leave descendants. In other words, evolution worked very hard to adapt the young to the new diet. On the other hand, the intensity of selection on the old (e.g., 55 years old) was much less – in large part, because most people did not live to the age of 55 until very recently. Additionally, once an animal gets past its reproductive age, the evolution largely ceases to have an effect (in humans, presence of older individuals was somewhat important for the survival of their genes in their children and grandchildren, so evolution did not entirely cease, but was greatly slowed down).

What this means is that evolution caused rapid proliferation of genes that enabled children and young adults to easily digest novel foods and detoxify whatever harmful substances were in them. Genes and gene combinations that did the same for older people also increased, but at a much, much slower rate. This may sound puzzling – if we have the detoxifying genes that work for young adults, why shouldn’t they work for older adults? The reason is that one gene-one action model is wrong; it’s not how our bodies work. Most functions are regulated not by a single gene, but by whole networks of them. As we age, some genes come on, and others go off, and the network changes, often in very subtle and nonlinear ways. That’s why we need the ‘trick’ with which I started, to consider functions at different ages as separate traits. During the last 10,000 years evolution worked very hard to optimize the gene network operating during earlier ages to deal with novel foods. But the gene network during later ages was under much less selection to become optimized in this way.

The striking conclusion from this argument is that older people, even those coming from populations that have practiced agriculture for millennia, may suffer adverse health effects from the agricultural diet, despite having no problems when they were younger.

NFL Timeline

Monday, February 4th, 2013

The NFL’s timeline ad implies that modern helmets are safer, which does not seem to be the case, when we take into account how they change behavior:

Fat and Health

Wednesday, October 10th, 2012

Fat is associated with health problems, but it may not be the cause of those problems. Fat may be a defense mechanism against unhealthy eating:

If merely the amount of excess fat is the direct cause of metabolic dysregulation then removing that fat through surgery should obviously result in metabolic improvement. Unfortunately, this is not the case. In fact, an excellent prior study has shown that liposuction does not make obese individuals healthy.

[...]

Obese individuals with metabolic problems who are prescribed a class of drugs called thiazolidinediones or TZDs for short, actually grow more fat cells, get fatter, but also get healthier.

Currently, the emerging theory of why obesity is associated with metabolic disease risk suggests that it is not the excess amount of fat that results in problems – but rather, it is the inability of the fat tissue (specifically subcutaneous) to expand enough via the development of numerous, healthy adipocytes or fat cells to store all the excess calories being ingested (more details on that here).

Forget About Helmets

Saturday, October 6th, 2012

If you fall off a bike, a helmet can reduce your risk of serious head injury — but ordinary cyclists rarely fall, which is why cyclists rarely wear helmets unless forced:

On the other hand, many researchers say, if you force or pressure people to wear helmets, you discourage them from riding bicycles. That means more obesity, heart disease and diabetes. And — Catch-22 — a result is fewer ordinary cyclists on the road, which makes it harder to develop a safe bicycling network. The safest biking cities are places like Amsterdam and Copenhagen, where middle-aged commuters are mainstay riders and the fraction of adults in helmets is minuscule.

“Pushing helmets really kills cycling and bike-sharing in particular because it promotes a sense of danger that just isn’t justified — in fact, cycling has many health benefits,” says Piet de Jong, a professor in the department of applied finance and actuarial studies at Macquarie University in Sydney. He studied the issue with mathematical modeling, and concludes that the benefits may outweigh the risks by 20 to 1.

He adds: “Statistically, if we wear helmets for cycling, maybe we should wear helmets when we climb ladders or get into a bath, because there are lots more injuries during those activities.” The European Cyclists’ Federation says that bicyclists in its domain have the same risk of serious injury as pedestrians per mile traveled.

Obviously wearing a helmet to get into the bath is counterproductive, but wearing a helmet while climbing isn’t crazy.