Garlic is interesting because it contains numerous biologically active compounds, but no single food can protect someone from every disease.
If your goal is to improve long-term health, the bigger picture matters much more: maintaining a healthy weight when appropriate, exercising regularly, getting adequate sleep, avoiding tobacco, limiting excessive alcohol, and eating a varied diet rich in whole foods.
Garlic can fit comfortably into that lifestyle.
The Bottom Line
Raw garlic is more than just a strongly flavored ingredient. Its sulfur-containing compounds, particularly those formed when garlic is crushed, have been extensively studied for their potential biological effects.
There is promising evidence that garlic may modestly support cardiovascular and metabolic health, but many exaggerated claims circulating online go far beyond what current human research can prove.
If you enjoy raw garlic and tolerate it well, a small amount can be a flavorful addition to a balanced diet. But there is no need to swallow large cloves every day or view garlic as a cure for serious diseases.
The healthiest approach is simple: use garlic as part of an overall healthy diet—not as a substitute for medical care.