RDA in the red. Can you get too much vitamins from food?

Hello, could anyone tell me if I can get too much B3 and Manganese from food? On some days it gets red, but in a normal range for the whole week when I look at the Nutrition Report.

Also is it better to look at our daily, weekly or monthly nutrition report?

And one more question I promise :D
What should be the upper limit for saturated fat and cholesterol from food?

Thank you for making such a valuable product Chronometer team.It helps me bring awareness to my diet, and helping my family get there too.

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