Athletic expatriate international healthcare insurance customers may wish to take supplements to avoid a deficiency of essential minerals.
Matt Lovell, sports nutritionist and founder of Sportsnutritionvlog.com, claimed 100 per cent of all the sportsmen he tests have too little magnesium and 80 per cent suffer from vitamin D deficiency.
Supplements can help to counteract this, although they ought to be "tailored to the individual and their sporting requirements", he said.
The expert explained that some products are created to deal with periods of physical activity, while others must be taken after a full meal.
When one should be consumed "depends entirely on the supplement", he continued.
Mr Lovell promoted whey protein, asserting that this can ensure the body has healthy levels of glutathione.
He added that creatine can support a person's abilities to perform "dynamic fast-twitch muscular activities".
Supplements can also be useful for dieters who are at risk of lacking sufficient essential compounds, according to Dr Sarah Brewer, founder of Natural Health Guru.
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