Quoted from the book Old Age Deferred by Arnold Lorand, M.D., 3rd edition, 1912 Carlsbad, Austria
He is considered to be a pioneer of modern geriatric medicine.
“Most of the evils that befall us in this world, including premature old age and early death, are, in our opinion, as we have often repeated, solely due to our own negligence; and to avoid such a fate we recommend the following precepts:
1. To be as much as possible in the open air, and especially in the sunshine; and to take plenty of exercise, taking special care to breathe deeply and regularly. 2. To live on a diet consisting of: meat once a day, eggs, cereals, green vegetables, fruit, and raw milk of healthy cows (as much as the stomach will permit); and to masticate properly. 3. To take a bath daily; and in addition, once a week or once every two weeks, to take a sweat bath (if the heart can stand it). 4. To have a daily action of the bowels; and in addition to take a purgative once a week if there is any tendency to constipation. 5. To wear very porous underwear, preferably cotton; porous clothing, loose collars, light hat (if any), and low shoes. 6. To go to be early, and to rise early. 7. To sleep in a very dark and very quiet room, and with a window open; and not to sleep less than six to six and one-half hours, or more than seven and one-half, and for women eight and one-half hours. 8. To have one complete day’s rest in each week, without even reading or writing. 9. To avoid mental emotions, and also worries about things that have happened and cannot be altered, as well as about things that may happen. Never to say unpleasant things, and to avoid listening to such, if possible. 10. To get married; and if a widow or widower, to marry again, and to avoid sexual activity beyond the physiological limit, as also to avoid a total suppression of the functions of these organs. 11. To be temperate in the use of alcohol and tobacco, and also in the use of coffee or tea. 12. To avoid places that are overheated, especially by steam, and badly ventilated. To replace or reinforce the functions of the organs which may have become changed by age or disease, by means of the extracts from the corresponding organs of healthy animals; but only to do this under the strict supervision of medical men who are thoroughly familiar with the functions of the ductless glands.”
This doctor’s Wikipedia page directly contradicts what I have just taken from his book—not simply distorting his assertions, or cherry-picking quotes—by saying that this doctor promoted a vegetarian diet.