Sports, Cardiovascular, and Wellness Nutrition - A dietetic practice group of the Academy of Nutrition and Dietetics

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Nancy Clark

Sports Nutrition Services LLC

Sports Dietetics – USA (SD-USA)

Services Offered:
one-on-one counseling, group workshops for clubs, teams; workshops for professionals for CEUs
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About Me

As author of the best-selling "Nancy Clark's Sports Nutrition Guidebook", nutrition counselor and certified WellCoach, I enjoy helping active people reach their performance and weight goals.

Having worked as a sports dietitian for more than 30 years, I have experience helping both casual exercisers and competitive athletes win with good nutrition. I particularly enjoy helping compulsive exercisers transform their food fears into positive fueling; triathletes complete an Ironman with energy to finish the event feeling good; wrestlers, lightweight rowers, figure skaters and dancers make weight.

For more information about one-on-one counseling and my book(s), please visit my website ( or read my "Sports Nutrition Guidebook." My private practice is located in Newton MA not far from the intersection of Route 9 and Route 128/95 and right across from the Newton Highlands T-stop.

You might even want to enjoy the online version of the workshop "Nutrition for Sports, Exercise and Weight Management: What Really Works – And Why." I co-lead the workshop with exercise physiologist and sports nutrition researcher John Ivy PhD. See for more information. 10 hours for CEUs for professionals

Questions and Answers

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  • I am crossfitter  43/m/ 243@22 % body fat. Just completed 8 week paleo/zone diet challenge with no change in bf % . I lost 6 lbs of body weight . Dropped one lbs of fat mass and 5 lbs fat free mass.  Avg calorie for 8 weeks 2300 with 28% cho : 32 % fat : 45 protein ( approx ). Mostly food were low glycemic/ lean cuts good fats compliance around 80% based on my journal. 

    Completed rmr at unive of Pitt Neuro center range 2699- 3000 cals
    Crossfit 4 x week . Am runs x 2 week

    Dismal results any suggestions to decrease body fat and keeping Fat free mass ?

    Goal is to hit 12 bodyfat to increase competitive performance 

    Sent from my iPad

  • hi if a diet is high in brown multi grain bread and fruit is this too high in sugars. training triathlete . protein only in form of shakes and not consistent. does too much brown bread cause insulin issues.

  • Good morning. Question to ask for me rather than clients is as the body does not know the difference in sugar types its just sugar would you count sugar in cottage cheese milk sugar as having insulin effect. thank you again

  • thx for advise. if fat loss is a goal is it possible than doing long cardio sessions are sometimes counterproductive because calorie intake to fuel this ends up exceeding expenditure so its better to do shorter sessions and have the afterburn effect. many thx

  • Sorry forgot to add shw swims half an hour from getting up at 6am . Has toast and apple. she is hydrated . would you be concerned on her GI or do they not matter in endurance events. sandwiches are multseeded bread and they r salad of leaves and tomatoes.

    Nancy Clark replied:

    Posted: 4/25/2012 6:54:00 PM

    If her intake is balanced and meets her needs for protein, carbs and vitamins and minerals, then she's fine. But if her diet has holes, then she should expand the variety in her diet. i don't pay attention t GI because it varies from person to person and day to day. Regards, Nancy
  • Hi Nancy. I train client who bikes 4 hrs/day and swims an hour as well. does weights for 30mins. 57yr old female. My q is she eats mainly sandwiches throughout the training as finds the carbs and bread sugar fuel her. Is this good enough. her wt is 60kg. her goal is tri events without bonking plus maintain muscle. is it wrong to eat solely bread and fruit in training. Her protein intake is minimal as she does not eat after her training ends apart from one meal of fruit and veg is she o/training

  • Hi Nancy,

    I am wondering if you have heard of athletes using beef collagen as a protein supplement (as an alternative to using whey protein). If so- do you recommend it? What are the risks and benefits? Any resources and or references would be greatly appreciated!



    Nancy Clark replied:

    Posted: 1/19/2012 7:52:17 AM

    I have not heard this and don't have any answer for you. Sorry. Nancy
  • Hi Nancy,

    I am working with a Collegiate level cyclist  who has already spent a year racing in Europe. He came back to college to pursue his education. 

    He is wanting to lose some weight over the winter to be in race shape by the spring. Having raced pro already, he is very diligent with everything he does, so I want to be sure I have my ducks in a row. I rave read your book and reread through it before I e-mailed you to see if I could find the answer to my question, but I could not.

    My question is, if we want him to have "X" number of Kcals per day, let's just say 3500 Kcals (and that number is shaving off 250 kcals/day to allow for a 1/2 pound weight loss/week), do we count the kcals he takes in on the bike from sports drinks, gels, etc? He is very hesitant to fuel while on the bike and I want to really encourage him to start fueling better while on the bike and right when he gets off the bike as well. 

    Thank you for your help!


    Lisa Wright, MS, RD, LDN

    Nancy Clark replied:

    Posted: 9/30/2011 9:48:40 AM

    Yes, those calories do count. He needs to focus on fueling before and during his rides, so he has good energy to train hard. He can "diet" at night, when he is sleeping!