No such thing as too much garlic.
Oh, there certainly is.

Spices and seasoning are about balancing the flavors with the food you are cooking, not just piling on one particular spice/seasoning.
Ok....to each their own. We use a lot of garlic in all our cooking and always have. I'm in my sixties and have had no health issues and I'm taking zero meds. 6'-0" 195#. I'm not a big health nut and I don't exercise much except some walking and hiking.
1. Garlic Contains a Compound Called Allicin, Which Has Potent Medicinal Properties.
2. Garlic Is Highly Nutritious, But Has Very Few Calories
A 1 ounce (28 grams) serving of garlic contains (3):
Manganese: 23% of the RDA.
Vitamin B6: 17% of the RDA.
Vitamin C: 15% of the RDA.
Selenium: 6% of the RDA.
Fiber: 0.6 gram.
Decent amounts of calcium, copper, potassium, phosphorus, iron and vitamin B1.
3. Garlic Can Combat Sickness, Including the Common Cold
Garlic
Garlic supplementation is known to boost the function of the immune system.
One large 12-week study found that a daily garlic supplement reduced the number of colds by 63% compared with placebo.
4. The Active Compounds in Garlic Can Reduce Blood Pressure
Elderly Woman Choosing Between Pills and Garlic
Cardiovascular diseases like heart attacks and strokes are the world’s biggest killers.
High blood pressure, or hypertension, is one of the most important drivers of these diseases.
Human studies have found garlic supplementation to have a significant impact on reducing blood pressure in people with high blood pressure (6, 7, 8).
5. Garlic Improves Cholesterol Levels, Which May Lower The Risk of Heart Disease
Heart and Stethoscope
Garlic can lower Total and LDL cholesterol.
6. Garlic Contains Antioxidants That May Help Prevent Alzheimer’s Disease and Dementia
7. Garlic May Help You Live Longer
Purple Garlic
Effects on longevity are basically impossible to prove in humans.
But given the beneficial effects on important risk factors like blood pressure, it makes sense that garlic could help you live longer.
The fact that it can fight infectious disease is also an important factor, because these are common causes of death, especially in the elderly or people with dysfunctional immune systems.
Bottom Line: Garlic has known beneficial effects on common causes of chronic disease, so it makes perfect sense that it could help you live longer.
8. Athletic Performance Can be Improved With Garlic Supplementation
Dumbbells
Garlic was one of the earliest “performance enhancing” substances.
It was traditionally used in ancient cultures to reduce fatigue and enhance the work capacity of labourers.
Most notably, it was administered to Olympic athletes in ancient Greece.
9. Eating Garlic Can Help Detoxify Heavy Metals in the Body.
10. Garlic May Improve Bone Health
Garlic Bulbs
No human trials have measured the effects of garlic on bone loss.
However, rodent studies have shown that it can minimise bone loss by increasing estrogen in females (23, 24, 25, 26).
One study in menopausal women found that a daily dose of dry garlic extract (equal to 2 grams of raw garlic) significantly decreased a marker of estrogen deficiency