What you can do. To promote bone, joint and muscle health: Get adequate amounts of calcium. For adults ages 19 to 50 and men ages 51 to 70, the Institute of Medicine recommends 1,000 milligrams (mg) of calcium a day. The recommendation increases to 1,200 mg a day for women age 51 and older and men age 71 and older.
Debit cards are a way to pay for things. You get a debit card from your bank or credit union when you open a checking account. Sometimes a debit card is free to use. Sometimes you will pay a fee to use the card. Debit cards look like credit cards.
You can use ANY CREDIT CARD for your Costco purchases, the key is to buy Costco Cash Cards online first, and then use those in the store instead of your credit card. It also works well for time-shifting your Costco spending if you need to meet a qualifying spend requirement to earn a signup bonus.