HOLY CRAP!

Here's what gives the majority of people numb hands and back problems. It's so simple most people ignore it.

Modern road bikes are designed for racing. Racing cyclists are generally fit, young, and very flexible. They are so fit and flexible that the majority of their bodyweight is supported not by the saddle or the hands, but by the feet - because they are continually putting power through the pedals.

Because of this, racing cyclists can afford to have a tiny light seat with no padding, and very low bars to stay aero.

Most people who get into road cycling are not racing cyclists. The critical area in which they differ is flexibility, specifically hamstrings. If your hamstrings are not flexible, your upper body cannot support its own weight, and you have to put that weight through your hands. The result? Numb hands.

I actually think a lot of people are buying the wrong type of bike. A flat-bar machine with skinny tires would suit most recreational and fitness riders much better than a bike ridden by a pro tour team. I blame Lance.

Original poster - the only way you are going to sort this out is to do two things. First, increase your bar height, so the upper body weight you cannot support with your hands is transmitted through your butt. Secondly - starting stretching your hamstrings a minute each straight after exercise, daily. You'll be much better suited to riding a 'proper' road racing bike after about 6 months of that.