Kelp is a brown seaweed that grows on the shores of the oceans. Also known as laminaria, it can be eaten raw, but is also used to obtain powders, after drying. It can also be taken in the form of liquid solutions or tablets.
What is kelp used for?
Kelp is rich in minerals , including iodine, potassium and calcium. It is also a good source of vitamins – especially B vitamins – which are associated with the ability to combat stress and increase available energy. Finally, by forming a gel when in contact with water, it is said to have a laxative effect in the intestine.
Kelp-based products are recommended both for those who want to lose weight and for those who want to help hair and nails grow healthy. Kelp supplements are recommended against inflammatory arthritis, psoriasis, circulatory disorders and kidney problems, constipation and digestive problems (such as flatulence). They are also sometimes recommended to increase energy, improve the immune system and protect against the harmful effects of radiation, and they appear to be potentially useful in preventing cancer (especially breast cancer).
However, there is no evidence that EFSA (the European Food Safety Authority) has approved claims that justify these or other proposed uses of kelp.
Warnings and possible contraindications
Kelp may increase the action and side effects of digoxin and hormones taken if you have thyroid problems. Also, if taken with some diuretics, ACE inhibitors or calcium supplements it could lead to dangerous increases in calcium levels. If you have any doubts, it is best to consult your doctor.
Kelp is contraindicated in case of pregnancy, breastfeeding, kidney problems and thyroid disorders. In general, taking large quantities orally is considered dangerous because of the corresponding iodine intake, which if in excess can jeopardize the health of the thyroid. If you have any doubts before taking kelp-based products it is best to consult with your doctor.
