The report of the Roosevelt Conservation Commission on National Vitality, indicates that annually there are in the United States over 600,000 deaths which might be prevented if existing knowledge of hygiene were properly applied; that at least half of the 3,000,000 and more sick-beds constantly kept filled in the United States are unnecessary; that the financial loss from earnings cut off by preventable disease and premature death amounts to over $1,500,000,000 annually; and that over 15 years are lost to the average life through the lack of application of knowledge which already exists but which simply has not yet been disseminated and applied. [Sidenote: Impairments Unsuspected] The health examinations of the Life Extension Institute have revealed unsuspected ailments in persons who considered themselves well, and to an extent which has astonished even those who have long been familiar with these subjects. Among large groups of clerks and employes of banks and commercial houses in New York City with an average age of 27 and all supposedly picked men and women, only 1 per cent. were found free of impairment or of habits of living inviting impairment. Of those with important physical impairments, 89 per cent. were, prior to the examination, unaware of impairment; 16 per cent. of the total number examined were affected with organic heart trouble, 42 per cent. with arterial changes, ranging from slight thickening to advanced arteriosclerosis, 26 per cent. with high or low blood pressure, 40 per cent. had sugar, casts, or albumin in the urine, 24 per cent. had a combination of urinary and other serious impairment, 47 per cent. had decayed teeth or infected gums, 31 per cent. had faulty vision uncorrected. Among industrial groups, not exposed to any special occupational hazard or poisoning, the figures were as follows: With an average age of 33, none were found to be free of impairment or habits of living inviting impairment. Of those with important physical impairments, 89 per cent. were, prior to the examination, unaware of impairment; 3 per cent. of the total number examined were affected with organic heart trouble; 53 per cent. with arterial changes, ranging from slight thickening to advanced arteriosclerosis; 23 per cent. with high or low blood pressure; 45 per cent. had sugar, albumin or casts in their urine; 26 per cent. had a combination of urinary and other serious impairment; 69 per cent. had decayed teeth or infected gums; 41 per cent. had faulty vision uncorrected. [Sidenote: Minor Ailments]