How to live longer: Eating various types of protein could cut the risk of hypertension

They looked at whole grains, refined grains, processed red meat, unprocessed red meat, poultry, fish, egg and legumes.

One point was given for each source of protein, with a maximum score of eight.

The researchers then looked at the link between new onset hypertension in relation to the protein variety score.

The new onset was defined as systolic blood pressure greater than or equal to 140 millimetres of mercury (mmHg) and/or diastolic blood pressure greater than or equal to 90 mmHg.