By weight, the average human adult male is approximately 60% water. However, there can be considerable variation in body water percentage based on a number of factors like age, health, weight, and sex.
How to claim medical tax deductions. Once you've totaled your medical expenses for the year, fill out the appropriate form in your tax return. If you include medical expenses in your itemized tax deductions, make sure to save your medical bills and payment statements as proof.
If you're eligible to take the tax break, you can choose to claim elder care either as a medical expense or as dependent care. If your mother is your dependent, you are eligible to deduct elder care as either medical expenses or dependent care, subject to IRS rules on the nature of the care.