Besides the obvious 'eat more' does anybody know of any reliable yet 'safe' ways of gaining weight. I used to be 10st but after a nasty illness (nothing serious but still a little bit) a year or so ago dropped down to not much over 9st. I'm nearly 6ft tall so in terms of my BMI this doesn't bear out well, but that's not really the point. I eat healthily and am a fit and well-proportioned person, I just can't put that weight back on. Some people won't understand why but having been 10st I saw that as about my natural weight and would like to rediscover that stone. I've talked to my doctor to make sure there's nothing wrong with me and he says I'm fine and I shouldn't aim to gain weight but surely there's no harm in it?