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.
To claim the medical expense deduction on your 1040.com return, enter your expenses on our Medical Expenses screen. Your expenses will appear on Schedule A in your final return, the form that appears when youâre itemizing expenses.