Beware unbalanced, unsustainable diets. Weight loss is not everything. Having an energy intake lower than the energy expended is the general idea of not becoming a bubble of fat, but there are ways to do it that are more conducive to good health than others.

Everything has a recommended intake, from protein to water. Ranges are cautionary rather than absolute, but they still serve as a useful guide.

Meal avoidance for the sake of temporarily shedding kilograms is not recommended, especially when there are arguments for simply eating less or purposely inducing metabolism instead. Deficiency can be dangerous. Conversely, loading too much of a macronutrient can be harmful.

When in doubt, err on the side of common sense; yak butter for breakfast is unlikely to be as healthy as fresh fruit and vegetables.

References

1. ABC News. (2016). Coffee diet: Doctors issue warning over food regime inspired by ‘energising’ Tibetan butter tea. [online] Available at: http://www.abc.net.au/news/2016-02-01/butter-coffee-diet-promises-to-improve-iq/7128076 [Accessed 19 Jan. 2018].
2. Gizmodo Australia. (2015). Bulletproof Coffee: Debunking The Hot Buttered Hype. [online] Available at: https://www.gizmodo.com.au/2015/01/bulletproof-coffee-debunking-the-hot-buttered-hype/ [Accessed 19 Jan. 2018].
3. Nutrient Reference Values for Australia and New Zealand. (2017). Nutrients | Nutrient Reference Values. [online] Available at: https://www.nrv.gov.au/nutrients [Accessed 19 Jan. 2018].
4. Mawer, R. (2017). What is Carb Cycling and How Does it Work?. [online] Healthline. Available at: https://www.healthline.com/nutrition/carb-cycling-101 [Accessed 19 Jan. 2018].