MILK SURVEY OF THE CITY OF ROCHESTER 59 



Q. What do you find happens to them after they have attained their 

 full growth if deprived of dairy products? 



A. What happens to the animal is the early onset of old age. There 

 are certain diseases which are commonly grouped together as old age 

 diseases ; those are, hardening of the arteries, or arterial sclerosis ; defects 

 of the heart; kidney degeneration; and the development of cancers or 

 tumors. These four types of pathological conditions are characteristic 

 and have been right along, of people advanced in life. Cancer occasion- 

 ally occurs in a weak person, and tumors, but almost always in persons 

 who are past middle life; the same is true of Bright's disease and 

 diabetes. As a rule, but by no means always, they are characteristic, they 

 occur in persons who are somewhat advanced in years, middle life or 

 after. Hardening of the arteries, heart defects, are characteristic of old 

 age. 



Data accumulated by various insurance companies show that while 

 say, 60 years was the age at which there was the greatest number of 

 instances of these old age diseases, thirty years ago, they have been in- 

 vading the earlier years of life with each succeeding decade, so that now 

 many people of forty are developing typical old age conditions where 

 formerly they developed them much later in life. 



We are all familiar with the fact, we see every day people on the 

 street who are actually only 30 or 40 years old, or 50, who look much 

 older than certain other people who we know are actually in years much 

 more advanced. What is this early aging due to? We cannot dispose 

 of a question of this magnitude at the present time. We have a great 

 deal of knowledge of nutrition, technical knowledge of nutrition, based 

 on animal experimentation, and correlated with other of human experi- 

 ence to a certain degree, but we are still in the progressive stage in this. 



But we have an immense amount of actual observations on the entire 

 span of life of experimental animals which shows that early breakdown 

 and development of the symptoms of old age at a period of one-third or 

 a quarter of the normal span of life of which that species is capable is 

 brought on by faulty diet. How far does this apply to human problems ? 

 Statistical studies have shown how many people are trying to live on a 

 diet, rolled oats and meat and tuber or root diet, which is unsatisfactory 

 for experimental animals. Are we to assume so far as data have been 

 collected and the results of animal experimentation correlate very well 

 with human experience that it does not correlate in the field where we 

 can still gain considerable knowledge ? I think not. 



It is that group particularly who are industrially employed, whose 

 earnings are fairly low, who confine themselves to this cereal and meat 

 and tuber type of diet, that go down with tuberculosis and with other 



