Aloe vera just may be the most impressive medicinal herb easily available to us (Garlic and ginger would be a close second and third in my opinion)
There is nothing we know of on this planet that offers the amazing variety of healing benefits granted by aloe vera. In a single plant, aloe vera offers potent, natural medicine that:
• Halts the growth of cancer tumors.
• Lowers high cholesterol.
• Repairs "sludge blood" and reverses "sticky blood".
• Boosts the oxygenation of your blood.
• Eases inflammation and soothes arthritis pain.
• Protects the body from oxidative stress.
• Prevents kidney stones and protects the body from oxalates in coffee and tea.
• Alkalizes the body, helping to balance overly acidic dietary habits.
• Cures ulcers, IBS, Crohn's disease and other digestive disorders.
• Reduces high blood pressure natural, by treating the cause, not just the symptoms.
• Nourishes the body with minerals, vitamins, enzymes and glyconutrients.
• Accelerates healing from physical burns and radiation burns.
• Replaces dozens of first aid products, makes bandages and antibacterial sprays obsolete.
• Halts colon cancer, heals the intestines and lubricates the digestive tract.
• Ends constipation.
• Stabilizes blood sugar and reduces triglycerides in diabetics.
• Prevents and treats candida infections.
• Protects the kidneys from disease.

It could be said that it works because the Aloe Vera plant produces at least 6 antiseptic agents: Lupeol, salicylic acid, urea nitrogen, cinnamonic acid, phenols, and sulphur. All of these substances are recognized as antiseptics because they kill or control mold, bacteria, fungus, and viruses, explaining why the plant has the ability to eliminate many internal and external infections. The Lupeol and salicylic acid in the juice explains why it is a very effective pain-killer.
Next, it could be said that Aloe Vera contains at least three anti-inflammatory fatty acids, cholesterol, campersterol and B-sitosterol (plant sterols) which explains why it is a highly effective treatment for burns, cuts, scrapes, abrasions, allergic reactions, rheumatoid arthritis, rheumatic fever, acid indigestion, ulcers, plus many inflammatory conditions of the digestive system and other internal organs, including the stomach, small intestine, colon, liver, kidney, and pancreas. B-sitosterol is also a powerful anti-cholestromatic which helps to lower harmful cholesterol levels, helping to explain its many benefits for heart patents.
If we add that Aloe contains at least 23 polypeptids (immune stimulators), then we understand why Aloe juice helps control a broad spectrum of immune system diseases and disorders, including HIV and AIDS. The polypeptids, plus the anti-tumor agents Aloe emodin and Aloe lectins, explains its ability to control cancer.
If the SYNERGISTIC RELATIONSHIP between the elements found in the sap, gel, and throughout the entire plant does not explain why whole leaf Aloe works, then NOTHING DOES! All of which explains why "Across Time" lay persons and physicians alike, have proclaimed that Aloe has the ability to heal, alleviate, eliminate, or even cure a monumental list of human diseases and disorders. Therefore it truly deserves the name, "Medicine Plant".