Hi Mairzydotes...
Firstly, don't worry ! You don't have diabetes or they (them thar medico's) would have said so ! These slightly raised blood sugar levels simply mean that, slightly above the norm. As our bodies age, some parts just wear out a bit so your pancreas is not as efficient as it was when you were younger.... (the pancreas is the organ that releases insulin which converts the sugars obtained from food etc into energy....). Your GP obviously doesn't think you need to take any tablets or have injections (most unlikely you'll need them) - so you can control these elevated levels with your diet - eat plenty of slow acting carbohydrates (pasta, bread, potatoes, rice etc - wholemeal ones work even better !), lots of lovely vegetables and keep your fat intake down. Fruit is fine as well and much preferable to sweet puddings and cakes (just not too much !).
As you don't have a *sweet tooth* then you don't have to even worry about eating sweet foods, but if offered something sweet, try to ensure it's eaten at the end of carb filled meal - that way you won't get a *sugar rush*.
Why not have a peek at the Diabetes UK website - lots of really useful, practical advice there