Ask the Nutritionist

Muscle vs Fat

Ask the Nutritionist

Posted by SluggoCRX on 4 years ago

I remember hearing Joe Cross say a few times in interviews that 30% of the weight he lost was muscle and 70% was fat. In several interviews I've also heard Joe say that a lot of Veggies contain plenty of Protein. Additionally, I've watched the movie "The Joy of Juicing" by Gary Null (which I find to be a treasure trove of Juicing information) and he agrees with Joe's statement as well as has supporting people in the movie (a link to the movie on U-Tube is below).

My question is, Why would a person experience such a high percentage of muscle loss if they're in-taking usable protein? I understand losing some muscle, it's expected, but if you're working out some then a person should retain a higher percentage (I did).

I ask because I've heard Joe say a few times he made of point of putting on Muscle to regain what he lost and something didn't sound right about that to me....

This topic contains 6 replies, has 1 voices, and was last updated by SluggoCRX 4 years ago.

Replies To Muscle vs Fat

  • SomeIdleTuesday

    4 years ago

    Muscle loss is caused by 3 things during a fast (that I know of, maybe more).

    1) Your body converts muscle to glucose at a high rate during the first several days of a fast, until your body is able to switch over to using fat as a major fuel source. The protein in juice likely goes directly to being metabolized for energy at this early stage. Exercise can help preserve this muscle loss. I think Joe might have been in bed at the beginning of his juice fast?

    2) Muscle loss occurs naturally as a person loses weight because the less fat you carry, the less your muscles have to work. Muscles burn calories, so your body does not want excess muscle, which is why we have to work to build it. A 300-lb person has a lot more muscle than a 100-lb person. I think most of Joe's muscle loss was due to this - not a bad thing.

    3) Your brain can only use glucose. If you don't take in enough glucose for some reason, (and your glycogen reserves have been depleted), your body's proteins will be broken down to make glucose. I would guess this would happen a lot less during a juice fast, but it would still happen.

  • SomeIdleTuesday

    4 years ago

    Um.... I just realized this is "ask the nutritionist" so I don't think I was supposed to answer that, sorry - so embarrassing :/

  • SluggoCRX

    4 years ago

    LoL... My Bad, I accidentially put it into the wrong group: I had problems finding it when I went looking and I felt like a tard.

    I appreciate the effort and comments too...Thanks

  • WJS

    4 years ago

    The nutritionist hasn't answered for many weeks so your answer was certainly appreciated by me! I too am worried about this. Today is day 35 for me of a juice only fast and have not exercised. I too worry I have lost too much muscle and perhaps damaged my metabolism. :(

  • Danmcn61

    4 years ago

    When you do a classic juice fast (reboot) like Joe did in the film, you absolutely WILL lose muscle tissue along with bodyfat. The reason for this is that you are not taking in the essential amino acids that your body cannot produce by itself (otherwise known as BCAAs, for branched-chain amino acids) and your body will naturally break down muscle tissue for energy. You will naturally lose more bodyfat than muscle when you do a classic juice fast, but if you want to preserve lean tissue then you have to tweak the program, and you will have to supplement with protein (it doesn't have to be whey isolate, though. There are protein powders out there that are completely plant-based and will provide the calories and aminos you need to preserve your lean tissue). You are going to have to choose whether you want to have at least some solid foods (eggs and fish, for example) as well. It is not a classic reboot, but if you want to preserve all of your lean weight, then you have to make adjustments.

    Be sure to exercise during your reboot, and to lift weights if you can. During times of famine, your body will break down muscle tissue before it burns fat because it is programmed to hang onto fat in order for you to survive. If you are exercising regularly, you are telling your body that you need the muscle tissue and you will lose much less of it.

    Another thing: you can also regain the muscle tissue you lose after the fast has been completed, and you can even continue eating an all-plant diet, if you wish. There are plenty of vegetarian/vegan athletes and bodybuilders out there who have built impressive amounts of muscle (without steroids either) on plant foods alone.

  • SluggoCRX

    4 years ago

    Thanks Dan

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