Tall Chinese boys and the Zappos case study

I often wonder why teens seem to be getting taller, even in countries that are not famous for tallness — like Italy or China. Today I found a potential answer.

According to a study published this month in The Lancet, it comes down to nutrition. Improving nutrition is why Chinese boys became 4 inches taller in 35 years, and went from 150th tallest on the list to 65th. Meanwhile, boys in the UK got only one inch taller during that time, which dropped them from 28th place to 39th.

Dr Andrea Rodriguez Martinez, the lead author of this study, concluded by saying:

“Our findings should motivate policies that increase the availability and reduce the cost of nutritious foods, as this will help children grow taller without gaining excessive weight for their height.”

It was the bit about “increasing availability” and “reducing cost” that got my attention. It reminded me of a case study reported in Jonah Berger’s book the Catalyst, about the online shoe retailer Zappos.

In their early days, Zappos was limited in how low they could cut their prices — Nike didn’t want their cool new sneakers being sold cheap.

But even if Zappos could offer lower prices than in retail stores, people would still be wary of buying shoes online.

So what Zappos did instead was remove roadblocks to buying. They offered free shipping instead of lowering prices.

It could have been disastrous for the company… but it was not. Zappos went from struggling ecomm startup to a $1.2 billion buyout from Amazon.

So my message to Dr Rodriguez is, instead of pushing for food voucher programs… advocate for more vending machines selling expensive but delicious dehydrated zucchini chips. And watch those kids shoot up in height rather than width.

But it’s unlikely Dr Rodriguez will listen to me. Maybe you will.

So my message for you is that free shipping makes any offer more enticing… and that price is often not the main objection that you need to address. Rather than trying to compete on price, ask yourself why your prospects are not buying already — and then remove that roadblock directly.

Let me give you an example:

I write a daily email newsletter. It’s free, so I can’t cut its price any lower without paying you to sign up. But the fact is, you can subscribe to it and if it’s not right for you… you can unsubscribe any time with just one click. No risk. No hassle. So why not try it out? Click here to sign up now.