Health

Gene Expression

Category archives for Health

I’m hearing about rumblings at 23andMe, and not in a good way. The company made a big splash a few years ago, and came highly recommended by friends (e.g., “They know their science, and have a bottomless pool of money”). This story at BNET got my attention though, and confirmed what many have been hinting…

David Goldstein, a geneticist at Duke, has critiqued the current focus on large-scale genomwide associations before. Now he is taking to the next step, as his group has a paper out which suggests that the reason that association studies have been relatively unfruitful in terms of bang-for-buck is due to the fact that they’re picking…

People evolving to be shorter & stouter

One of the things about evolution you sometimes hear is that it has “stopped” for humans. Steve Jones, a British geneticist, is one of the more prominent public expositors of this viewpoint today. The key fact that most people latch on to is that infant and child mortality is very low, so the vast majority…

I was doing some exploring of the effect of a transition to agriculture on human height. Until the past few centuries humans were much shorter than they had been during the Ice Age. In the process I came upon some interesting data. Height, health, and development: Adult height is determined by genetic potential and by…

I got interested in vitamin D a few years ago because I was trying to figure out a plausible explanation for why many of the genetic variants implicated in lighter skin seem to have risen in frequency relatively recently, 10,000 years ago, when modern humans have been extant at higher latitudes on the order of…

Why I avoid processed foods

The Accuracy of Stated Energy Contents of Reduced-Energy, Commercially Prepared Foods: The accuracy of stated energy contents of reduced-energy restaurant foods and frozen meals purchased from supermarkets was evaluated. Measured energy values of 29 quick-serve and sit-down restaurant foods averaged 18% more than stated values, and measured energy values of 10 frozen meals purchased from…

Africa’s urban poor becoming obese

Yeah, you read that right. Overweight and obesity in urban Africa: A problem of the rich or the poor?: Descriptive results showed that the prevalence of urban overweight/obesity increased by nearly 35% during the period covered. The increase was higher among the poorest (+50%) than among the richest (+7%). Importantly, there was an increase of…

The myopia epidemic!

Increased Prevalence of Myopia in the United States Between 1971-1972 and 1999-2004: Results Using the 1971-1972 method, the estimated prevalence of myopia in persons aged 12 to 54 years was significantly higher in 1999-2004 than in 1971-1972 (41.6% vs 25.0%, respectively; P < .001). Prevalence estimates were higher in 1999-2004 than in 1971-1972 for black…

Brown people are susceptible to diabetes

In medical news which won’t be surprising to anyone, Ethnic Variation in Fat and Lean Body Mass and the Association with Insulin Resistance: Objective: Our objective was to compare total body fat to lean mass ratio (F:LM) in Aboriginal, Chinese, European, and South Asian individuals with differences in insulin resistance. … Results: After adjustment for…

Check it out. That’s ~10% of the student body.