How to Stop Weight Loss & Diarrhea in Senior Horses As our equine companions age, new needs and health concerns emerge. We understand how stressful it can be to see an older horse declining and not know how to help. But take heart! While you can’t reverse time, you can adjust care to better meet your horse’s changing needs. Two common challenges in caring for older horses are weight loss and frequent loose stool or diarrhea. Get ideas below to nurture your aging horse’s digestive system...