It depends. Equipment that you use to maintain general good health is not deductible; it is viewed as a nondeductible personal expense. However, equipment you buy on a medical practitioner’s advice to treat a specific ailment or condition can be deductible. For example, if the equipment is used as part of physical therapy for damaged muscles, it would be a deductible medical expense.
Debt used to buy, build, or construct a principal residence or second home and that generally qualifies for a full interest expense deduction.