My husband who is diabetic complains of numbness in the soles.is this a serious condition?

Yes: It is called diabetic neuropathy. Diabetes harms the nerves in the feet commonly. Because of the numbness, he may not be able to feel small cuts or abrasions. These may lead to infections and eventually amputations. Talk to your doctor about good diabetic foot care, proper nail trimming, and proper footware. An ounce of prevention here is worth a ton of cure.

Needs to be evaluate: Symptoms of neuropathy can range anywhere from numbness, tingling, or burning sensation, to an uncomfortable painful sensation of the extremities. For some, these symptoms are mild, while for others, they can be severe and disabling. Neuropathy can develop as a result of a pinched nerve, trauma, drug side effect, and some diseases such as diabetes. He should be seen and professionally evaluated.