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.
Taxpayers may not claim a person as a dependent unless the person is a U.S. citizen, U.S. resident alien, U.S. national or a resident of Mexico or Canada. If the taxpayer can claim an exemption for a dependent and fails to make the claim, the dependent still cannot claim an exemption for himself on his tax return. Taxpayers cannot claim exemptions for maids, servants or housekeepers who work for the person filing the income tax return.