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.
1 Medical expenses: You claim the amount of your medical expenses that exceeds 7.5% of your adjusted gross income. 2  Double check to see if youâre overlooking anything. 3  This tax season families with new babies may be able to deduct breastfeeding supplies like a breast-pump.