Probably the researcher knows a list of 146 deseases. If it were 1000 deseases, then the would have also been put in to so called bads from sugar.

I have seen many people, who eats sweets and stays without any deseases. I have also seen many people who are away from sweets but still come across many deseases.

People become patients not because of sugar, its due to Stress in life, unhealthy habits, unusual life styles and poluted surroundings/environment.

Any thing crosses certain limit will cause danger. Many people died just because of excessive consumption of water in single attempt. The sugar researcher should have spent some valueble time on 'Alcoholic drinks', smoking or Excessive fuel consumption in society, this would have been more useful than just making people worry about sugar. This worry is very dangerous than sugar.