What are Yams?
Yams are essentially flowering plants which are often mistaken for sweet potatoes although yams come from plants that have a single embryonic seed leaf (termed as a monocot) and are classified under the yam family, under the Dioscorea genus. Sweet potatoes on the other hand come from plants that possess two embryonic seed leaves (known as a dicot). Further, they fall under a different family classification — the morning glory or Convolvulacea family. In terms of similarity, rather than sweet potatoes, yams are found to be related to grasses as well as lilies.
In appearance they often resemble elongated potatoes but the size and appearance of yams could differ greatly with the different varieties, such as purple yams and white yams. The smaller ones could be compared in size to a small potato while the larger ones can grow to weigh over 100 pounds. Their origins can be traced to the continents of Africa and Asia but they are widely available in most parts of the world today, especially as more people come to appreciate the health benefits of yams.
Fun Facts about Yams
- It may surprise you to know that in the Trobriands, near Papua New Guinea, they have ‘magicians’ who are specially needed to use their magic to make yams flourish in their neat and tidy gardens.
- At one point in Japan’s history, it was only the nobility who were privileged to be allowed to eat the Japanese variety of yam, known as yamaimo root.
- There is an annual Yam Festival which is popularly celebrated in Ghana, which is understandable given how popular the crop is throughout Africa.
Health Benefits of Yams
- A standard serving of baked yam contains 20% of your daily requirement of vitamin C. There are many reasons why experts promote vitamin C as a nutrient that has such a huge positive impact on our health and wellbeing. This single vitamin promotes healing and can help with many health problems such as disease of the eye and many prenatal health issues. Studies have even linked this vitamin to protection against deficiencies of the immune system. Being an antioxidant, it is beneficial for a person’s overall health, skin and bones.
- While vitamin B6 is found in larger quantities, yam also contains varying quantities of vitamins B1, B2, B3 and B9. The B vitamins are notably important in helping your body derive energy, which it processes from the intake of food. Another of the benefits is its links with lower incidence of heart disease as well as high blood pressure. A deficiency in vitamin B6 on the other hand can lead to anemia.
- Yam can benefit one’s digestion and does much to improve bowel movements. This is because not only does it have dietary fiber but also is a source of potassium. The presence of both helps in maintaining regularity and in keeping digestion healthy. Those concerned with weight loss should opt for such foods rich in fiber as they promote the feeling of fullness.
- The carbohydrate contents coupled with the other nutrients mean that a lot of energy can be obtained from the consumption of yams. More importantly, yams will not cause a sudden crash post consumption which can be a problem after elevated blood sugar levels, which is an issue with high glycemic index foods.
- One should note that yams have many good properties and their use in medicine is a long standing tradition in countries like China and Japan. They have been used for a wide range of treatments, from stomach disorders to diabetes.
Baked Yam RecipeThere are many healthy recipes for yams and the simplest of these is a side dish of oven roasted yam. The ingredients needed to make two servings of this enjoyable fare are:
- A large sized yam
- Olive oil (two tablespoons)
- Salt and pepper to taste (about a teaspoon each).
- Peel the yam and then slice it so that each cut is about a quarter inch thick.
- Place the same in a shallow pan lined with foil and add the seasoning.
- Bake until tender in a 350-degree pre-heated oven.
- This should take about 30 minutes to bake and the wrinkles around the edges are one way to tell when the dish is nearly ready.
|Calcium, Ca||17 mg||1.7 %|
|Copper, Cu||0.18 mg||8.9 %|
|Iron, Fe||0.54 mg||3 %|
|Magnesium, Mg||21 mg||5.25 %|
|Manganese, Mn||0.4 mg||19.85 %|
|Phosphorus, P||55 mg||5.5 %|
|Potassium, K||816 mg||23.31 %|
|Selenium, Se||0.7 mcg||1 %|
|Sodium, Na||9 mg||0.38 %|
|Zinc, Zn||0.24 mg||1.6 %|
|Vitamin A||138 IU||2.76 %|
|Vitamin C||17.1 mg||28.5 %|
|Vitamin B6||0.29 mg||14.65 %|
|Vitamin E||0.35 mg||1.17 %|
|Vitamin K||2.3 mcg||2.88 %|
|Riboflavin||0.03 mg||1.88 %|
|Thiamin||0.11 mg||7.47 %|
|Folate, DFE||23 mcg||5.75 %|
|Niacin||0.55 mg||2.76 %|
|Fiber||4.1 g||16.4 %|
|Cholesterol||0 mg||0 %|
|Carotene, alpha||0 mcg|
|Carotene, beta||83 mcg|
|View all +|