THREE KEY FACTS A study found that 55% of Britons are hyper-fatigued, rising to 65% of 25- to 34-year-olds. Magnesium deficiency can lead to tiredness, lack of concentration, insomnia and anxiety. hypothyroidism can also cause tiredness and low energy levels.

Hattie Garlick writes about travel, health, fitness and more for the Telegraph. OPINION If you’re overwhelmed and constantly exhausted you could be one of the people suffering from Tatt..