Please guide. How much of it is true?

Thanks for your question. I think you meant the 'fat' rich milk and high calorie  milk products like butter, ghee and ice cream which may lead to blocked arteries. Yes you are right in a way in that case. Toned/Double toned milk cuts down on the fat. A helpful tip is to keep a watch on the calories consumed through diet. Calcium requirements may be met through toned/double toned milk, green leafy vegetables, etc. Staying away from addictions, junk food, alcohol, keeping a watch on the calories consumed daily, brisk walking for at least for 30 minutes 6 days a week, keeping your weight in check, getting adequate sleep, reduction of mental stress - help to keep your arteries healthy and your body too. Best wishes.