As per (USDA) nutrient database, one cup of cooked turnip cubes, weighing about 156 grams (g), contains:
Water 146 gms
1.11 g of protein
0.12 g of fat
7.89 g of carbohydrate
3.1 g of fiber
51 milligrams (mg) of calcium
0.28 mg of iron
14 mg of magnesium
41 mg of phosphorus
276 mg of vitamin K
25 mg of sodium
0.19 mg of zinc
18.1 mg of vitamin C
14 micrograms (mcg) of folate
So looking at nutrition data of Turnip it seem that it is a very good source of vitamin C (which is also an antioxidant), Vitamin K, manganese, potassium, vitamin B-6, calcium which is good for the bones and folate.
Turnip (Shalgam) good for the bones:
Calcium, which is almost 51 milligrams in 156 gms of Turnip, can help growth and repair of bones in addition to increasing the bone mineral density.
As we grow older, most people suffer from arthritis and osteoporosis. Calcium-rich foods such as Shalgam is must to increase the strength and density of our bones.
Turnip (Shalgam) good for the skin:
Turnips are rich in vitamins & beta-carotene and minerals such as copper which are very important for maintaining skin health.
Shalgam help boost our Immune system
Vitamin C and ascorbic acid, which are present in large quantities in turnips are very important immune system boosters. Vitamin C can stimulate the production of white blood cells and antibodies, in addition to acting as an antioxidant.
Turnip or Shalgam help prevent cancer
In addition to vitamin C, turnips contains vitamin E, manganese, and beta-carotene, all of which act as antioxidants in our body. These antioxidants neutralize free radicals and hence prevent the spread of cancer.