dani teresa now knows the yo yo effect only too well when she 1st tried dieting 10 years ago she only wanted to lose a few kilos after that she went on many diets has been my form and i started at $75.00 kilos then bit by bit it was $95.00 right now it's. but to 70 but in between the highs got higher and the lows lower. it's a common story without professional advice diets often end in disaster. it can be frustrating but even more seriously the constant ups and downs are bad for the heart according to a us study this also applies to people who aren't particularly overweight to begin with and only want to lose or gain a few kilos. of washington the surprising thing from this study was that fluctuations and weights crease the risk of coronary heart disease heart attacks in people of normal weight as well margarita it would have been east and as someone who treats obesity i'm frankly alarmed how would this affect someone who is very overweight with a b.m.i. over 40 or even 50 for instance my doc often for. letting you know yo dieting is not healthy cardiologists aren't alone here metabol