Rather, do what should have been done with vaccines. After all, vaccines aren't natural. What is it? this...

Get about a million babies together, from all walks of life. Split them into two equal-sized groups. One group give no carrots. The other group, make sure they have at least a few carrots every week. Track them until they die naturally of old age. Check the age statistics.

Then eat carrots or not, based on who lived longer. Do the same with every new vaccine that comes out before giving it to the public... so at least the people know.

Abstract
Twenty five children who had undergone their full course of childhood immunization schedule were compared with 25 children who did not have any vaccinations for a period of five years. Parameters for comparison were measles, pertussis, poliomyelitis, tetanus and tuberculosis. Out of the 25 vaccinated children, only one child had mild measles at 2 1/2 years while 4 had suspected whooping cough at different points of the study period but not clinically diagnosed as pertussis. Among the unvaccinated group, 2 died of measles before the age of 3 years while 11 others went down with measles during an outbreak in 1986. An unvaccinated child also died of tetanus within the study period. In this paper we advocate the total integration of every community in the ongoing Expanded Programme for Immunization in Nigeria.