One version of the ads clearly warned of potential perils—for example, hair loss, weight gain or stroke.

其中一个版本的广告明显警告潜在的风险, 比如脱发, 体重增加或中风等等。

Again, there's been no weight loss yet.

可是没有人体重下降。

Now, maybe the person has lost a lot of weight, so they've had some weight loss or they've gained weight.

现在，也许这个人体重减轻了很多，所以他们体重减轻了一些，或者体重增加了。

While the gains were still small enough to easily reverse, it's the first two years after leaving a weight loss that seemed to be the riskiest time for stacking the kilos.

虽然增重的幅度仍然很小，可以很容易地逆转，但减肥后的头两年似乎是增重最危险的时期。