Benefit Fact Sheet. TRICARE for Life (TFL) is TRICARE's Medicare-wraparound coverage available worldwide to TRICARE beneficiaries who are also entitled to Medicare. Essentially, TFL acts as a supplement to Medicare Part A and B, there are no special enrollment procedures or TRICARE premium payments. You must pay Medicare Part B monthly premiums.
Vitamin A is also used for shigellosis, diseases of the nervous system, nose infections, loss of sense of smell, asthma, persistent headaches, kidney stones, overactive thyroid, iron-poor blood (anemia), deafness, ringing in the ears, and precancerous mouth sores (leukoplakia).
Vitamin A has many roles in the maintenance of health; it is important to maintain normal vision, for cell differentiation, efficient immune function, and genetic expression (6, 16). Vitamin A recommendations for older adults have been lowered from previous editions of the RDAs (2).