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For the second factor, mice were exposed to an aldosterone infusion.

The researchers also measured two hormones that are affected by liquorice and that regulate fluid balance: renin and aldosterone.

PA is caused by a surfeit of aldosterone, a hormone produced by the adrenal glands.

But in people with primary aldosteronism, aldosterone can be elevated even when renin is low.

Another adrenal hormone, aldosterone, controls sodium levels, and through that, blood pressure.