Calcium should be supplemented during lactation.
The demand for calcium during lactation should be great. If you don't make progress, you must make up more.
Age is no reason not to supplement calcium.
Not supplementing calcium is related to age. But it doesn't mean that you don't need calcium supplements when you are old. Calcium participates in daily metabolism. Whether adults or children, it is best to supplement calcium every day.
Get more sunshine and supplement vitamin D.
At the same time, we should bask in the sun more, supplement vitamin D, and promote the absorption of calcium.