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.
Claiming the medical expenses deduction. To claim the medical expenses deduction, you must itemize your deductions. Itemizing requires that you not take the standard deduction, so you should only claim the medical expenses deduction if your itemized deductions are greater than your standard deduction (TurboTax will do this calculation for you).