So it has been a week since I have been working and eating healthy. I weighed 14.5 stones and now I weigh 13 stones. My question is, what are the repercussions (if any) of losing weight quickly?

I here that it is "wear and tear" on the body, what does this mean? it seems to be a very common expression used by people, but I have no idea what kind of wear and tear on the body it is.

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    Could you give a conversion factor for stones? Either way this is still fast by a percentage Jul 28, 2014 at 16:40
  • Did you mean you started at 13.5 stone? That seems much more reasonable and is in line with your post from 2 weeks ago fitness.stackexchange.com/questions/18159/… Jul 28, 2014 at 17:41
  • @meanderingmoose no, I started at 14.5 stones, I weighed myself last week on saturday, this week on saturday I was 13 stones. My parents were shocked, so was my sis, but I felt the same ... :\ the week before I had only lost 0.5 stones from 15 stones. But then I had only worked out 2 days of the week because of work stuff. Last week I did everyday, 2 hours resting as little as possible and I have only been eating fruit which won't hold me for long, I'll have to get wiser as I go along and adjust to what my body wants I guess, but it is getting harder. Jul 28, 2014 at 20:45

1 Answer 1


1.5 stones is about 21 lbs (I had to look it up). That's a lot of weight, but not completely impossible. The danger that comes from extreme calorie drops has to do with making sure your body has enough of the right stuff to keep itself happy.

  • You will typically lose a lot more weight when you first start off, and then the progress will begin to taper.
  • To answer whether it is healthy really depends on what you did to get there.

Typically, one week isn't going to make or break you from a health standpoint. However, you can't sustain that pace for too long.

Make sure your diet includes the following bare minimums:

  • 0.5g protein per pound lean body mass (estimated is fine); 0.8g protein per pound if exercise is a big component
  • 0.35g fat per pound lean body mass
  • Fruits and veggies for micronutrients

Without those bare minimums, your body runs the risk of going into metabolic shutdown. Practically, that means no more fat loss, and you run the risk of burning your muscles and organs for energy. Those goals are easy to accomplish when you are only trying to lose 1-2 lbs a week.

Some of that initial weight loss was water weight, some was fat, but some could also be lean mass and that's where the danger lies. Again, 1 week isn't going to cause major lasting damage, but prolonged periods like that can cause other problems.

My suggestion is this:

  • Celebrate the 21 lbs you lost!
  • Adjust the diet so you aren't losing quite as fast. Many dieters skimp on protein, and protein is what helps protect lean mass.
  • Make sure you are getting all your essential nutrients. Take supplements if necessary to meet them.
  • Make sure the diet is something you can handle long term.

The last bullet point is really important. Once your body gets used to eating a certain way, and you suddenly increase the amount you eat, you are likely to regain the weight you lost. However, when you make small adjustments to lose what you need to lose, you only have to keep eating at the new amounts to maintain your new weight.

  • Thank you, protein is something I have been skimping out on, I have only been eating bananas, apples and avocados...and a lot of water, I have upped the protein since because I am vegetarian I been taking more things like pinto beans etc... giving the body what it needs and the things that keep it happy is much harder than exercising, it is the hardest part so far :] I would only take protein shakes (I use gold-standard whey) on days where I have squatted 180kg or so, but not otherwise, because it puts weight on me fast. Thank you for the advice, so insightful! Jul 30, 2014 at 12:21

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