Most racehorses are abused by speed since speed wins races while leading to a costly variety of diseases all of which involve the circulation and can end in foundering (severe laminitis). The horse pushed pass his limits and going off his feed will go down the drain due to one ill or another, or take months to recover. Colic could occur of course, yet is not associated with under- or overtraining. Going off feed is.

Regular deworming of nematodes gives the best prevention of colic.

Unfortunately, colic is a management problem.

Owners and trainers may actually think horses beneficially associate with worms or that the nematodes cause no harm.