For example, many high protein and fat, low carb diets such as Atkins or Dukan are good for short-term weight loss, but not good for maintaining long term weight and keeping it off. These type of diets also have other risks associated with them including kidney and bone mass risks and high meat and/or diary diets are also associated with increased risk of both breast, prostate cancer and colorectal cancer.
Also, while dairy products are low GL they do raise an insulin hormone called IGF-1 (insulin-like growth factor) which is known to increase cancer risk and may switch off some of the anti-ageing benefits. Another reason is that some people have hidden food allergies and do not realise that this could be preventing weight loss and may even be increasing it. It is estimated that over 12 million people are living with some type of food intolerance and are spending large amounts of money on wasted pills and remedies trying to relieve the symptoms without knowing what is causing the problem.
Why food intolerances or allergies lead to weight gain and difficulty losing weight is only gradually being recognised. The most common kind of food intolerance leads to the production of IgG antibodies, which induce an immune reaction when the trigger foods are eaten. The symptoms can often be a delayed reaction, making it difficult to identify the offending foods. They also cause fluid retention. A study last year reported an average 12lb weight loss after 60 days in a group of 120 people tested for, and avoiding their IgG positive foods. The more foods you eat that provoke an IgG antibody reaction the worse it is for your health and your weight. Your immune system should not produce large amounts of IgG antibodies, if it does, you are likely to suffer from some degree of discomfort and symptoms that just don’t seem to improve, as well as resistant weight loss. If you suspect that you may have reactions to foods, you could investigate further by having an IgG Food Intolerance test, which you can do with a home test kit. For further information on allergy testing go to www.yorktest.com. My book, Hidden Food Allergies, is a comprehensive guide to helping you identify and combat hidden food allergies available here.
An Alternate Day Low GL Diet approach
In my May Newsletter I presented the current evidence for why an alternate day or intermittent fasting diet approach may be the best way to lose weight and keep it off. One of the most impressive results was shown recently in an 8 week trial giving people 25-30% less than their calorific needs for three alternate days by Dr Samira Eschghinia in Iran. This study showed a 13.2lb weight loss. Further research at the University of Illinois, headed by Surabhi Bhutani, has tested the effect of either alternate day dieting, or exercise, or both combined. Exercise alone was not that effective but, combined with the alternate day diet, doubled the weight loss from 6.6lbs in 12 weeks to 13.2lbs. The secret appears to be to switch on, if they are not already, a pair of genes.
The two key genes involved are called SIRTUIN, nicknamed the ‘skinny’ gene, and FOXO, called ‘sweet sixteen’. They interact with each other, and together are called ‘skinny sweet sixteen’. We all have them but, like a program on your computer that you don’t use, some people have them turned off The good news is that certain nutrients, diets and exercises can switch skinny genes back on and turn you into a fat burner. This is just what Kate Staples and I advocate in our new book, Burn Fat Fast, available now. In summary, Burn Fat Fast shows you that the best and healthiest way to lose weight, and keep it off, is a combination of the following: A low GL diet (45 GLs to lose weight, 60 GLs to maintain) Three alternate ‘fast’ days on lower GL/calories – a total of 35 GLs/800 kcals and other days on approximately 50 GLs. 3-5 grams of glucomannan fibre or PGX before each meal, with a large glass of water.
Supplemental HCA, chromium and 5-HTP, plus the basics of a high potency multivitamin, extra vitamin C and essential fats. Alternating resistance and endurance exercises. Resistance exercises can be done in an 8 minute sequence involving four exercises that use different groups of muscles. Endurance exercise can be done in half an hour, including short thirty second bursts of high intensity exercise, eg sprinting, four to six times during your training session. For further information on Burn Fat Fast visit here.