A common algae drops your blood pressure more than most medications, according to a study in the Journal of Human Nutrition and Dietetics.
…without any side effects!
Scientists have long wondered why people in coastal areas, especially in Asia, tend to have lower rates of heart disease.
Turns out, many regularly eat seaweed and algae.
These marine plants are full of good stuff: omega-3s, antioxidants, potassium, and unique peptides that protect the heart.
Some even contain natural nitrates, which relax blood vessels and improve circulation.
To investigate further, researchers analyzed 29 clinical trials from 12 countries, covering 1,583 adults aged 18 to 86.
Participants ranged from healthy to those with conditions like obesity, diabetes, or metabolic syndrome.
Only studies lasting four weeks or more were included, since blood pressure shifts take time.
Some trials used microalgae like Spirulina and Chlorella, while others used macroalgae like kelp or wakame.
The algae were given in many forms: powders, drinks, tablets, dried whole algae, or extracts. Doses ranged from 0.001 to 8 grams daily.
Here’s what they found:
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● Overall: Algae users saw systolic pressure drop by 2.05 mmHg and diastolic by 1.87 mmHg over placebo.
● Spirulina was best: Cutting systolic by 5.28 mmHg and diastolic by 3.56 mmHg.
● Whole algae > extracts: Whole algae reduced systolic by 3.96 mmHg and diastolic by 2.82 mmHg.
● High doses worked best: 3g+ daily lowered systolic by 3.71 mmHg and diastolic by 3.05 mmHg.
● People with health issues (like metabolic syndrome) saw 3x greater improvements than healthy participants.
● Most effective in people with high BP (129/79 mmHg or more).
● Kelp didn’t help, despite containing nitrates.
● Timeframe: Benefits kicked in after 12 weeks.
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