Or so says The Irish Times:
Meagher was advised to re-introduce meat into her diet after she developed pernicious anaemia in her 30s – a condition which manifested itself in chronic tiredness and constant migraines. Through her own work as a medical herbalist, she says she encounters clients who are not faring as well on a vegetarian diet.
“I’d estimate that about 40 per cent of the vegetarian population that I treat develop health problems that are directly related to their diet,” says Meagher.
“Typical problems that arise could include low energy levels, muscle fatigue, lowered immune systems and menstrual problems,” she states.