Cancer is the number two cause of premature death in Americans.

Increasing cancer rates seem to be caused by environmental factors, especially diet. Scientists are examining foods and substances having
protective factors. Beta carotene is one of the most well known natural anti-cancer substances. Over the past 20 years, cancer health
authorities, National Cancer Institute and dozens of publicized studies have shown evidence that eating vegetables rich in beta carotene
reduces the risk of all kinds of cancer. Beta carotene is the main source of Vitamin A for humans. Our bodies convert beta carotene to Vitamin A as we need it. Although very high dosages of Vitamin A supplements are toxic, high amounts of beta carotene from foods and supplements are safe. Spirulina is the richest beta carotene food known, having over ten times more beta carotene than any other food, including carrots.

Beta carotene is one of the most effective substances for deactivating free radicals, which damage cells, leading to cancer. Free radicals are molecular fragments from environmental pollution, toxic chemicals, drugs, and physical and emotional stress. Beta carotene prevents free radicals from reacting, and decreases incidence of lung cancer, prevents chemically induced tumors in animals, prevents precancerous prechromosome damage and enhances immunological resistance.

Over 100 animal studies confirm Vitamin A and beta carotene inhibit development of various cancers and tumors. Many human epidemiological studies correlated high Vitamin A intake with decreased cancer risks.12 Beta carotene (and not preformed Vitamin A from animal sources) correlated with lower cancer rates

Over 15 studies from 1975-1986 correlated lower incidence of lung cancer with beta carotene and Vitamin A. One study found the lower the serum level of beta carotene, the higher incidence of lung cancer.14 Nine studies from 1974-1986 correlated lower digestive tract cancer (oral, stomach, colon, gastrointestinal) with beta carotene and Vitamin A. Two studies with women correlated lower breast and cervix cancer. A five year study in China completed in 1993 with 29,000 people revealed daily doses of beta carotene, vitamin E and selenium reduced the incidence of cancer deaths by 13%