hi there,s a small hand held lazer on the market for this kind of thing ,came accros it trawling though the diabetic collums google it ,anyway with diabetes your imune will be down you might try a book on vitimins its called [vitamins and minerals a step by step guide,by karen sullivan]this little book will explane a lot ,my wife got one at a bootsale for 50p dont know what it costs in the high street ,might try the libaery.
oobuc5: