7 unusual tax deductions

The battle of the bulge could be tax-deductible if your doctor prescribed weight loss for medical reasons like diabetes or heart disease.

The IRS will allow you to deduct the cost of memberships to support groups like Weight Watchers or sessions with a weight loss professional as medical expenses.

Be warned: The cost of food is not deductible.

In order to claim the deduction, the expenses must be more than 7.5% of your adjusted gross income.

To ensure you can support the deduction, Bonnie Lee, an enrolled agent and author of Taxpertise: The Complete Book of Dirty Little Secrets and Hidden Deductions for Small Businesses the IRS Doesn't Want You to Know, suggests asking your health care professional to write a letter stating weight loss is necessary for medical reasons.

"You don’t need to submit the letter with your taxes, but you should have it on hand in case you’re ever audited," she says.