What can I do to prevent shin splints when running?

Mechanical eval. Shin splints develop when the stresses on the tibia are greater than the body can accommodate. There are multiple contributing factors. Wearing appropriate shoes, stretching your calves, having good core strength, and slowly increasing training (instead of making abrupt changes) can all be preventative. A sports doc or pt can evaluate your mechanics.
Stretch. I would recommend a program with stretchng and shoes that give good arch support and are appropriate for the sports activity. Dont try to increase the level of activity too quickly to avoid inflammation along the tibia such as shinsplints ice massage can help prevent it from getting worse.

Related Questions

What exercises can I do to prevent shin splints and lower leg pain after running?

Stretches. Shin splints are frustrating for sure! tight heel cords (achilles tendons in the back of the leg at the ankle) can contribute, so doing stretches for that muscle before and after running can help-wall push-ups with legs straight, etc. See link for that and other suggestions: http://tinyurl.Com/d5qxtk4. Read more...
Good shoes. Best thing to do is get good running shoes fitted to your feet. Stretching before and after running also helps. Read more...

What are the best brands of running shoes that help prevent shin splints?

Well fit cushioned. Often caused by training errors: increasing mileage too fast, too often and too much. Running surgfaces can also increase the impact stress on the leg. Shoes are the interface between your body and the floor. Overpronators more prone to this, many running shoes are engineered to help this. Cushioning shoes in general are best, models change too frequent to reccomend specific model. Read more...
Comfortable ones.... Take the insoles out of your shoes and replace them with ones that have more cushioning and support. I like spenco products. The one i recommend most is the spenco polysorb cross-trainer insole. This will give you cushioning at heel strike and help decrease the impact on your knee. It may not have an "immediate" effect though. See an podiatrist if symptons persist. Read more...
CUSHIONING. Asics excels in cushioning, nimbus or cumulus (think clouds.) these will hold up over mileage. Mizuno wave is also a good choice. New balance has a few in their higher end. You will still need good pronatory control from an orthotic or a firm insole. Stretching is also key in the prevention of shinsplints. Read more...