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Your Medication Has Some Side Effects

What's going on: Hair loss is a common side effect of many medications, but there are some that are more prone to causing it. Those include blood thinners like heparin and Coumadin, blood pressure meds like ace inhibitors and beta-blockers, thyroid medications, cholesterol drugs and some antidepressants, Hirsch says.

How to fix it: Talk to your prescribing doctor about whether there are alternative medications that will treat your condition just as effectively but won't cause your hair to fall out. Once you switch, you should start to see regrowth within a few months.