Also from: http://realnutritionsupplement.blogspot.com/2008/07/gods-pharmacy.html
The doctrine of signatures is an ancient European philosophy that held that plants bearing parts that resembled human body parts, animals, or other objects, had useful relevancy to those parts, animals or objects.
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It’s been said that God first separated the salt water from the fresh, made dry land, planted a garden, made animals and fish. all before making a human. He made and provided what we’d need before we were born. These are best & more powerful when eaten raw.
A sliced Carrot resembles the human eye including the pupil, iris, and radiating lines. Science indicates that carrots help protect the vision, especially night vision. WHFoods: Carrots
A Tomato has up to four chambers and is commonly red. Tomatoes are rich in lycopene and helps prevent heart disease, prostate cancer, breast and more. Tomato juice can also reduce the tendency toward blood clotting. WHFoods: Tomatoes
Grapes hang in a cluster that resembles the shape of the heart. The stronger the color of the grape is, the higher the concentration of phytonutrients. Grapes prevent heart disease and reduce platelet clumping and harmful blood clots. WHFoods: Grapes

Walnuts resemble the brain, mimicking the wrinkles and folds of the neocortex.Research suggests that walnuts may reduce the risk or delay the onset of Alzheimer’s disease. Walnut – Wikipedia The high concentration of omega-3 fats in walnuts promotes healthy brain function. WHFoods: Walnuts
Kidney Beans, true to their name are kidney shaped. They provide nutrients that are helpful to the human kidneys. Kidney beans contain molybdenum, which helps sulfite oxidase to form and is responsible for detoxifying sulfites WHFoods: Kidney beans.
Sweet Potatoes resemble the pancreas and have a low glycemic index count, which is beneficial for diabetics. North Carolina Sweet Potato Commission

Olives resemble ovaries and may help reduce hot flashes in women going through menopause. WHFoods: Olives Research indicates that Olive Oil may reduce ovarian cancer by 30%. ACS: Olive Oil May Lower Ovarian Cancer Risk
Oranges, Grapefruits and other Citrus fruits have been compared to the appearance of female mammary glands. These fruits contain nutrients that are helpful in the fight against breast cancer. Health Benefits of Citrus Limonoids Explored

Sliced Onions resemble skin cells and contain quercetin. Studies have shown when treated with a combination of quercetin and ultrasound at 20 kHz for 1-minute duration, skin and prostate cancers show a 90% mortality within 48 hours with no visible mortality of normal cells. From Wikipedia, the free encyclopedia.
Celery has a bone like appearance and is rich in silicon and Vitamin K, which are needed for healthy joints and bones Gillian McKeith You Are What You Eat

Avocados were used by the Aztecs as a sex stimulant and the Aztec name for avocado was ahuacatl, meaning “testicle” History of Avocados. An extract of avocado impedes the growth of both androgen-dependent and androgen-independent prostate cancer cells. WHFoods: Avocados Today’s research shows that when a woman eats 1 avocado a week, it balances hormones, sheds unwanted birth weight and prevents cervical cancers. And how profound is this? …. It takes exactly 9 months to grow an avocado from blossom to ripened fruit. There are over 14,000 photolytic chemical constituents of nutrition in each one of these foods (modern science has only studied and named about 141 of them).

Figs have a rich history and often been referred to as a sexual food, this is partly symbolic due to the appearance of the fruit. Figs are loaded with seeds and when halved, many note a resemblance to female genitalia. The Hindu name for fig is anjeer and research has shown that anjeer is helpful for sexual weakness Ficus carica – medicinal plants. Figs have also been mentioned as a source helpful for male fertility and motility. Health-info.org