All I have ever seen is eat calcium rich foods, like dairy, leafy greens, and fortified foods. I don’t do dairy and fortified foods usually means cereals with a lot of junk! Stay away from processed foods they have high sodium, sugar, alcohol and caffeine. Carbonated beverages as well.
Fruits, veggies, fatty fish(I’m not a fan), nuts and seeds…I take supplements! Calcium, Vitamin D with K2, magnesium and Omega-3’s.