I think we should open to any question about the health and lifestyle.
Living in US, we learne that every question is good question.
Make life more enjoyable.
For the above situation, it is not easy to get answer. the age change may or may not be the reason. physical or physiological or pych....may play some role. First of all, you both should talk...there is nothing wrong for talking....then, looking of help from doctor....did your hu*****and take some medication.....some medication has side effect....can be the reason.....then, consultate urologist or other specialist....your primary physician should let you know whom you both would like to see.....