High-Dose Iodine for Hypothyroid Symptoms. This is the most common reason why people take iodine supplements, but the evidence is not simple and in fact may show some danger from the high-dose pills. In healthy people, iodine deficiency is clearly related to hypothyroid disorders, and adequate iodine intake is preventative. But too much of a good thing is not necessarily better. This study, for example, found that iodine overnutrition also contributed to autoimmune thyroid disorders and hypothyroidism.
Instead, you can use your Social Security Number and report your income and expenses on a Schedule C tax form (http://www.irs.gov/pub/irs-pdf/f1040sc.pdf). However, many sole proprietors still elect to use an EIN because it reduces the chances of identity theft and banks often require one to open a business account.
Request a tax ID verification letter. The IRS can fax or mail the letter to you if your contact information is the same as when you applied for the number. If you changed your business mailing address or fax number, you must file Form 8822 to change your address with the IRS before you can receive a verification letter.