1 / 5Of course, green leafy vegetables are high in calcium, but spinach, beetroot greens and some legumes are high in oxalates, which affect calcium absorption. This is the reason why you should not consume too much vegetables like spinach.2 / 5Wheat bran and milk: This combination may sound good, but consuming milk with wheat bran reduces calcium in your body. You can take supplements to meet the deficiency of calcium.3 / 5Salt and alcohol: Drinking alcohol reduces the amount of calcium in the body which causes bone weakness. Bones become weak due to excessive use of salt. Actually, salt contains sodium, which after going into the body removes calcium from the body through urine.4 / 5Tea and Coffee: Excessive consumption of tea and coffee also weakens the bones. Caffeine present in it is very harmful for bone health.5 / 5Cold drinks and chocolate: Carbon dioxide and phosphorus are found in cold drinks which make bones hollow. Chocolate eaten in excess can also weaken bones. By eating this, the amount of sugar and oxalate increases in the body, due to which calcium is not absorbed in the body and bones start becoming weak.