90% of Americans are deficient in choline. Here’s a brief guide to the 3 types:
Which is the best Choline - Neurologica.
However, be aware that increased choline can lead to increased chance of lethal prostate cancer. Hence, a deficiency may not be bad if prostate cancer is a risk for you.
According to Dr Brad, 97% of Americans are deficient in potassium.
How to optimise your supplements.
Modern Healthspan talks about common deficiencies in elderly Canadians.
Top deficiency - vitamin D.
Next is B-12 and Folate.
Finally, if you take zinc, you should also take copper in a 10:1 ratio.
Best sports drink… 1/2 coconut water, 1/2 tomatoe juice and a pinch of salt.
Copper is very important. I was supplementing just zinc for a long time. I’ve reduced zinc to 3x a week and take copper with it, and also take chlorophyll in the form of copper chlorophyllin 7x a week morning and night.
@DeStrider @AustraliaLongevity
I’m glad you posted this. It was just this week, when I was hunting for a good zinc lozenge to have on hand in the event I start feeling sick, my friend said make sure you also take copper.
Your post inspired me to look at my multi and I see my daily blueprint capsule contains 15mg of zinc, but alas, no copper.
Do you happen to know if we need to take copper daily to offset it, or is this the kind of thing we could take a couple times per week (trying desperately not to add things to my too big stack! 
The doctor in the video said there are combination zinc/copper supplements available.
Every time I take zinc I make sure to take copper.
NOW has a very good Zinc + Copper (30 mg + 0.3 mg) product which is about $.08 a cap.
Doesn’t have the right ratio does it? 30mg zinc, 0.3mg copper. Don’t you need 3mg copper with that?
Experts range in their recommendation from a ratio of 1:8 to 1:80 for zinc to copper. Whichever you feel most comfortable with.
I also take a multivitamin with 0.5 mg of copper and 11 mg of zinc. So my ratio would be 1:50.
If you want more copper, you can try this:
If you guys are concerned about copper deficiency or excess, it would probably be a good idea to check your Ceruloplaslmin level most importantly and also your serum copper level.