Hope I'm not being a pain in your .......
1)I meant that it's not certain whether they will get or not. I refered to it as a source of danger of getting disorders that might be caused by the use of those lamps.
2) What's your opinion on the use of the verb "to relate"? I looked it up in a dictionary and here's what I've come up with.
See below.
"1 [+ obj] : to show or make a connection between (two or more things)
▪ relate cause and effect — often + to ▪ Few of the people who became sick related their symptoms to the food they'd eaten the day before"
3)"I am not a doctor, but there are theories about depression being connected to nutritional deficiencies combined with the body's reduced capacity to absorb nutrients." It seems like symtoms can be connected to the cause of symptoms?
There's nothing wrong with these verbs
per se. But you need to consider the context.
You're talking about electrical equipment, and to say that lamps are connected to something implies a literal connection. "Electric lights are connected to heart disease" is an unfortunately-worded sentence, whereas "Depression is connected to nutritional deficiencies" is not ambiguous - even though I, personally, would not use 'connect' in this context.
Why use these vague non-specific words (connected to, related to) when you can say, "Depression is thought to be partly caused by ...", thus declaring your meaning.
If you're not sure of your meaning, or you want to be vague, "linked to" is probably much more used for causative links than the verbs you've chosen.