Your body uses vitamin D for maintaining healthy bones and effectively absorbing calcium. Not having enough vitamin D in your system may raise your risk of osteoporosis, bone malformations, cancer, inflammation and suppressed immunity. A simple blood test can give you accurate results and help you determine if your vitamin D levels are in the healthy range.
Delta Airlines requires that the make-up bag or carry-on luggage must not exceed 45 linear inches, with a maximum size of 22 inches in length, 14 inches in width and 9 inches in height.
As of 2015, Delta allows passengers to bring one carry-on bag and one personal item on the plane for free. The carry-on bag is subject to size restrictions; if it does not fit on the plane, Delta representatives can check it at the gate and fly it to the passenger's final destination.