Dear Pharmacist,

I'm taking a prescription drug version of fish oils for my heart and cholesterol. I want a plant-derived option because I'm a vegetarian, plus I get "fish burp." Are there plant-derived essential fatty acids, or do you have to get it from fish?

--H.B., Plano, Texas
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Dear Pharmacist,

I'm frustrated and happy at the same time because last week you taught me about a blood test called "leptin" and how it relates obesity. I've been the same weight for 5 years and can't lose anything, yet I eat very little. Please share more.

--A.S., Gainesville, Florida
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