Foods high in both Omega-3s and uridine might be a good place to start.

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Can uridine and Omega-3s together make people feel as well as giving them a standard antidepressant treatment?

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Uridine fuels mitochondria, and paired with the lubricating effect of the Omega-3s, helps them make more energy more efficiently.

FORBES: Antidepressant Foods

The Omega-3 diet showed results after one month, and uridine was effective as long as the rats were fed enough of it.

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Uridine is a molecule used in the genetic coding for RNA, choline is in the vitamin B family, and DHA is found in certain fish and fish oils.

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Is uridine safe for humans in large quantities?

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The drink has three components -- uridine, choline, and the omega-3 fatty acid DHA -- that, working together, help restore synapses, said Dr. Richard Wurtman, professor at the Massachusetts Institute of Technology and co-author of the study.

CNN: Nutritional drink, imaging show promise for Alzheimer's

Should we be taking uridine supplements?

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What the researchers did was give rats two substances found in foods: Omega-3 fatty acids, a kind of fat that the body can't make enough of on its own, and uridine, one of the building blocks of DNA, which promotes a cell's energy-making process.

FORBES: Antidepressant Foods