Diabetes II is not really diabetes at all. It is a metabolic disorder brought on by the chronic consumption of alcohol, trans fats, corn-fed animal products and/or fructose (in sugars and flour).
Too much of the above are the most common causes of the medical condition that causes diabetes II and heart disease: metabolic syndrome.
Candy is mostly sucrose, which is half fructose and thusly poisons the liver and furthers the metabolic syndrome AKA things that aren't necessarily apparent are getting much worse.
Like death worse.
Other symptoms of metabolic syndrome include obesity, acne, IBS, sensitive skin, poor immune health, hypothyroidism, hypertension, cardiac infarction, anxiety, depression and addiction.
If you see some of these in you and others, it's bc you're sick, too. His pancreas gave first. For you, it could be IBS or acne. Definitely most people get fat (separate mechanism).
In short, your husband is doing the equivalent of drinking himself to death.
This isn't opinion and likely very difficult to swallow, but while diabetes II cannot be reversed like obesity can, it can certainly be prevented (same thing for most heart disease).
"Fat Chance..." by Dr. Robert Lustig M.D.
"Sugar: the Bitter Truth " on YouTube
In 2012 I obliterated my liver with alcohol and fructose. 1 in 3 billion are the odds of my recovery due to complications. Add the odds that my wife would be a doctor and have access to this very new science.
It's not the lottery, but to me, it's better;)