Why fish oil is bad for you ...

The omega-3 fatty acids found in fish support heart, eye, and brain health, and may help lower cholesterol, among other benefits. If you don't regularly eat fish, you might consider a supplement. Here are the best options, according to dietitians.

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Research over the years has sent sometimes disappointing and conflicting messages about whether fish oil supplements are worth it, our columnist says.

Vitamin B12 is an essential B vitamin that is crucial for DNA synthesis and the production of blood cells.Unfortunately, our body is incapable of producing v...