Archive for the 'Cautions' Category

High Heels Effect on Calves

ScienceDaily (July 16, 2010) — When it comes to shoes, some women will go through hell for a pair of Jimmy Choos. But what effect does wearing high heels have on our bodies? Clinicians have known for a long time that if you hold a limb in a shortened position over an extended period, the muscles shorten. High-heeled shoes push our heels up, which made Marco Narici from Manchester Metropolitan University wonder whether wearing heels on a regular basis could shorten our calf muscles.

According to Narici, there was some anecdotal evidence that something changed because secretaries in the 1950s complained about discomfort when they took their heels off and walked flat-footed. “I thought it was an experiment which was inadvertently being done by women. What we could do was test high heel wearers to see if we could find some changes in the calf muscle,” says Narici, who publishes his results on 16 July 2010 in the Journal of Experimental Biology

more via Science Daily

Phosphorous in sodas accelerates signs of aging

 

 

 

 

ScienceDaily (Apr. 26, 2010) — Here’s another reason to kick the soda habit. New research published online in the FASEB Journal shows that high levels of phosphates may add more “pop” to sodas and processed foods than once thought. That’s because researchers found that the high levels of phosphates accelerate signs of aging. High phosphate levels may also increase the prevalence and severity of age-related complications, such as chronic kidney disease and cardiovascular calcification, and can also induce severe muscle and skin atrophy.

“Humans need a healthy diet and keeping the balance of phosphate in the diet may be important for a healthy life and longevity,” said M. Shawkat Razzaque, M.D., Ph.D., from the Department of Medicine, Infection and Immunity at the Harvard School of Dental Medicine. “Avoid phosphate toxicity and enjoy a healthy life.”

To make this discovery, Razzaque and colleague examined the effects of high phosphate levels in three groups of mice. The first group of mice was missing a gene (klotho), which when absent, causes mice to have toxic levels of phosphate in their bodies. These mice lived 8 to 15 weeks. The second group of mice was missing the klotho gene and a second gene (NaPi2a), which when absent at the same time, substantially lowered the amount of phosphate in their bodies. These mice lived to 20 weeks. The third group of mice was like the second group (missing both the klotho and NaPi2a genes), except they were fed a high-phosphate diet. All of these mice died by 15 weeks, like those in the first group. This suggests that phosphate has toxic effects in mice, and may have a similar effect in other mammals, including humans.

“Soda is the caffeine delivery vehicle of choice for millions of people worldwide, but comes with phosphorous as a passenger” said Gerald Weissmann, M.D., Editor-in-Chief of the FASEB Journal. “This research suggests that our phosphorous balance influences the aging process, so don’t tip it.”

 Phosphorous in sodas and processed foods accelerates signs of aging, study suggests.

Warnings on 3-D Movies and TVs

This is from the warning’s box on a Samsung 3-D Tv according to the epidemiological blog Effect Measure.

If you experience any of the following symptoms, immediately stop watching 3D pictures and consult a medical specialist:

(1) altered vision; (2) lightheadedness; (3) dizziness; (4) involuntary movements such as eye or muscle twitching; (5) confusion; (6) nausea; (7) loss of awareness; (8) convulsions; (9) cramps; and/or (10) disorientation. Parents should monitor and ask their children about the above symptoms as children and teenagers may be more likely to experience these symptoms than adults. [no mention of an erection lasting longer than 4 hours while watching porn in 3-D, but presumably that’s also worth a call to your doctor]

Viewing in 3D mode may also cause motion sickness, perceptual after effects, disorientation, eye strain, and decreased postural stability. It is recommended that users take frequent breaks to lessen the likelihood of these effects. If you have any of the above symptoms, immediately discontinue use of this device and do not resume until the symptoms have subsided.

We do not recommend watching 3D if you are in bad physical condition, need sleep or have been drinking alcohol.

Watching TV while sitting too close to the screen for an extended period of time may damage your eyesight. The ideal viewing distance should be at least three times the height of the TV screen. It is recommended that the viewer’s eyes are level with the screen.

Watching TV while wearing 3D Active Glasses for an extended period of time may cause headaches or fatigue. If you experience a headache, fatigue or dizziness, stop watching TV and rest.

[snip]

Viewing in 3D mode may cause disorientation for some viewers. DO NOT place your television near open stairwells, cables, balconies or other objects that may cause you to injure yourself. (Samsung Australia)

via 3-D horror movies : Effect Measure.