The age of menarche is influenced by heredity, but a girl's diet and lifestyle contribute as well.
A well balanced diet also contributes to healthy hair, skin, nails and improved mood.
Low-salt diets and sedative drugs contributed to the methods of treatment.
It is thought that the Korean diet contributes significantly to this.
If true, this could be another reason why adequate, balanced diets contribute to good health, they said.
In fact, she says, a gluten-free diet can be high in calories and contribute to weight gain if you're not careful.
She now believes that an improper diet contributed to her back and hip injuries.
It is not known whether Bell's diet contributed to his cancer.
A poor diet can also contribute to stress or anxiety - for example, low levels of vitamin B-12.
Some studies suggest that the diet could contribute to osteoporosis and kidney stones.