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.
The most commonly allowed size of carry-on luggage is 56 x 36 x 23 cm (22 x 14 x 9 inches) including all handles, side pockets, and wheels. This varies by airline with some allowing slightly larger or smaller bags, so check with the airline you plan to travel with.